Post on 12-Feb-2022
IUPAC-NIST Solubility Data Series. 74. Actinide Carbon Compounds
Editor
Jiri Ha laa…
Department of Inorganic Chemistry, Masaryk University, Brno, Czech Republic
Contributors~*Evaluator!
Jiri Ha la*Masaryk University, Czech Republic
James D. NavratilClemson University, USA
~Received 15 August 2000; accepted 2 December 2000!
This volume presents solubility data of the carbonates, salts of carboxylic acids, andother carbon containing compounds of actinides. Covered are compounds of thorium,uranium, neptunium, plutonium, americium, and one system for curium. No solubilitydata on carbonates or other carbon containing compounds have been found for otheractinide elements. The literature has been covered up to the end of 1999, and there wasa great effort to have the literature survey as complete as possible. Only those publishedresults that report meaningful data were considered for the volume. Papers that reportedqualitative results with statements like ‘‘sparingly soluble’’ or ‘‘insoluble,’’ etc. were notconsidered. In addition to papers that published numerical data, some papers that pre-sented data in graphical form only were considered as well. They were considered for thevolume either if no other data were available for the system, if the data were published indifficult to obtain older literature, or if the data were considered to be of importance forother reasons. For many compounds it was not possible to provide theChemical Ab-stractsRegistry Numbers since these have not yet been assigned. For this reason, theRegistry Number index is incomplete. ©2001 American Institute of Physics.
Key words: actinides; actinide carbon compounds; aqueous solutions; nonaqueous solutions; solubility.
3
5
Contents
1. Preface. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 532. Introduction to the Solubility Data Series:
Solubility of Solids in Liquids. . . . . . . . . . . . . . . . . 5342.1. The Nature of the Project. . . . . . . . . . . . . . . . 5342.2. Compilations and Evaluations. . . . . . . . . . . . 534
2.2.1. Compilations. . . . . . . . . . . . . . . . . . . 5342.2.2. Evaluations. . . . . . . . . . . . . . . . . . . . 535
2.3. Quantities and Units Used in Compilationand Evaluation of Solubility Data. . . . . . . . . 5352.3.1. Mixtures, Solutions, and
Solubilities. . . . . . . . . . . . . . . . . . . . . 5352.3.2. Physicochemical Quantities and
Units. . . . . . . . . . . . . . . . . . . . . . . . . 5362.4. References for the Introduction. . . . . . . . . . . 537
3. The Solubility of Actinium Compounds. . . . . . . . . 5393.1. Actinium Oxalate. . . . . . . . . . . . . . . . . . . . . . 539
4. The Solubility of Thorium Compounds. . . . . . . . . 541
a!Electronic mail: hala@chemi.muni.cz© 2001 American Institute of Physics.
0047-2689Õ2001Õ30„2…Õ531Õ168Õ$35.00 531
4.1. Thorium Oxocarbonate. . . . . . . . . . . . . . . . . . 5414.2. Salts of Pentakis~carbonato! Thorate~6-!. . . 542
4.2.1 Evaluation of theNa6Th~CO3!51Na2CO31H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 542
4.3. Guanidinium Trisfluorotris~carbonato!Thorate~6-!. . . . . . . . . . . . . . . . . . . . . . . . . . . 544
4.4. Hexamminecobalt~III !Pentakis~carbonato!Aqua Thorate~6-!. . . . . . 545
4.5. Thorium Formate. . . . . . . . . . . . . . . . . . . . . . 5454.5.1. Thorium Formate Trihydrate. . . . . . 54
4.6. Thorium Acetate. . . . . . . . . . . . . . . . . . . . . . . 5464.7. Thorium Carboxylates. . . . . . . . . . . . . . . . . . 5474.8. Thorium O-Alkylcarbonodithioates. .. . . . . . 5484.9. Thorium Oxalate. . . . . . . . . . . . . . . . . . . . . . . 548
4.9.1. Evaluation of the Th~C2O4!21H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 548
4.9.2. Thorium Oxalate Dihydrate. . .. . . . 5494.9.3. Evaluation of the
Th~C2O4!21HNO31H2O System... 5514.9.4. Evaluation of the
Th~C2O4!21H2SO41H2O System. . 553
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
532532 JIRI HALA
4.9.5. Evaluation of theTh~C2O4!21~NH4!2C2O41H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 557
4.9.6. Evaluation of theTh~C2O4!21C2H2O41HNO31H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 564
4.9.7. Th~C2O4!21Th~CO3!21Na2C2O4
1Na2CO31H2O System. . . . . . . . . . 5684.10. Ammonium Tetrakis~oxalato!thorate. .. . . . . 5694.11. Thorium Oxobis~o-hydroxybenzoate!. . . . . . 5694.12. Thorium~5-nitro!Barbiturate. . . . . . . . . . . . . 5704.13. Thorium 8-Hydroxyquinolinate. .. . . . . . . . . 5714.14. Thorium Phthalocyaninate. . . . . . . . . . . . . . . 571
5. The Solubility of Uranium Compounds. . . . . . . . . 5725.1. Uranium Dioxo Carbonate. . . . . . . . . . . . . . . 572
5.1.1. Evaluation of theUO2CO3–CO3
2–Na2CO3–H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 572
5.2. Sodium Dicarbonatodioxouranate~VI !~2-!. . . 5815.3. Salts of Tris~carbonato!Dioxouranante~4-!. . 5825.4. Sodium Pentakis~carbonato!
Bis$dioxouranate~VI !%~6-!. . . . . . . . . . . . . . . . 5875.5. Uranium~VI ! Dioxo Bis~carboxylates!. . . . . . 5885.6. Uranium~VI ! Dioxobis~acetate! Dihydrate... 5915.7. Sodium Tris~acetato! Dioxouranate~VI !. . . . . 5915.8. Sodium Zinc Tris~dioxouranium~VI !!
Nonakis~acetate!. . . . . . . . . . . . . . . . . . . . . . . 5935.9. Uranium~VI ! Dioxo
Bis~carboxylates!1Organic Solvent1WaterTernary Systems. .. . . . . . . . . . . . . . . . . . . . . 593
5.10. Uranium~VI ! DioxoBis~benzenesulfonate!1Phosphoric AcidTri-n-Butyl Ester1Water System. . . . . . . . . 600
5.11. Uranium~IV ! Oxalate. . . . . . . . . . . . . . . . . . . 6015.11.1 Evaluation of the U~C2O4!21H2O
System. . . . . . . . . . . . . . . . . . . . . . . . 6015.11.2 Evaluation of the
U~C2O4!21HCl1H2O System. . . . . 6035.11.3. Potassium Tetrakis~Oxalato!
Uranate~IV !. . . . . . . . . . . . . . . . . . . . 6095.11.4. Uranium~VI ! Dioxo~oxalate!. . . . . . 6095.11.5. Evaluation of the UO2C2O41H2O
System. . . . . . . . . . . . . . . . . . . . . . . . 6095.11.6. Evaluation of the
UO2C2O41HNO31H2O System.... 6115.11.7. Uranium~VI ! Dioxo~oxalate!
N,N8-Dimethyl FormamideMonosolvate. .. . . . . . . . . . . . . . . . . 624
5.12. Ammonium Tris~o-hydroxybenzoato!Dioxouranate~VI !. . . . . . . . . . . . . . . . . . . . . . 625
5.13. Uranium~VI ! Dioxo~8-hydroxyquino-linate!. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 626
5.14. Uranium~VI !Dioxo~ethylenediaminetetraacetate!. . . . . . . . 629
5.15. Uranium~VI ! Dioxo@4,4,4-trifluoro-1-~2-thienyl!-1,3-butanedionate#. . . . . . . . . . . . . . . . . . . . . . . . . 629
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.16. Uranium~IV ! Phthalocyaninate. . . . . . . . . . . . 6306. The Solubility of Neptunium Compounds.. . . . . . 630
6.1. Neptunium~VI ! Dioxocarbonate. . . . . . . . . . . 6306.2. Salts of Dioxocarbonato Neptunate~V!~-1!. . 631
6.2.1. Evaluation of theNaNpO2CO31CO21NaClO41H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 631
6.3. Salts of Dioxo Bis~carbonato!Neptunate~V!~-3!. . . . . . . . . . . . . . . . . . . . . . . 632
6.4. Salts of Dioxo Tris~carbonato!Neptunate~V!~-5!. . . . . . . . . . . . . . . . . . . . . . . 643
6.5. Hexamminecobalt~III ! Salts ofDioxo~carbonate! Neptunates.. . . . . . . . . . . . 645
6.6. Neptunium~IV ! Oxalate. . . . . . . . . . . . . . . . . 6456.7. Neptunium~VI ! Dioxo~oxalate!. . . . . . . . . . . 647
7. The Solubility of Plutonium Compounds. . . . . . . . 6487.1. Plutonium~VI ! Dioxocarbonate. . . . . . . . . . . 648
7.1.1. Evaluation of thePuO2CO31CO21NaClO41H2OSystem. . . . . . . . . . . . . . . . . . . . . . . . 648
7.2. Ammonium Tris~carbonato!Dioxoplutonate~VI !~-4!. . . . . . . . . . . . . . . . . . 652
7.3. Ammonium HydroxocarbonatoDioxoplutonate~VI !~-1!. . . . . . . . . . . . . . . . . . 654
7.4. Hexamminecobalt~III ! Salt ofPentakis~carbonato!Aquaplutonate~IV !~-6!. . 654
7.5. Plutonium~III ! Formate. . . . . . .. . . . . . . . . . . 6557.6. Plutonium~III ! Oxalate. . . . . . . . . . . . . . . . . . 656
7.6.1. Evaluation of thePu2~C2O4!31C2H2O41HNO31AscorbicAcid or Hydrazine1H2O System... 657
7.7. Plutonium~IV ! Oxalate. . . . . . . . . . . . . . . . . . 6617.7.1. Evaluation of the Pu~C2O4!21H2O
System. . . . . . . . . . . . . . . . . . . . . . . . 6617.7.2. Evaluation of the
Pu~C2O4!21HNO31H2O System. . . 6627.8. Plutonium~VI ! Dioxo~oxalate!. . . . . . . . . . . . 6667.9. Plutonium~III ! o-hydroxybenzoate. . . . . . . . . 6687.10. Plutonium~IV ! oxo~o-hydroxybenzoates!. . . . 6697.11. Plutonium~IV ! 8-Hydroxyquinolinates. . . . . . 6717.12. Plutonium~IV !
N-Hydroxy-N-Nitrosobenzeneaminate. . . . . . 6728. The Solubility of Americium Compounds. . . . . . . 673
8.1. Americium~III ! Carbonate andAmericium~III ! Hydrogencarbonate. . . . . . . . 6738.1.1. Evaluation of the Am~OH!CO3 or
Am2~CO3!31CO3221NaClO41H2O
System. . . . . . . . . . . . . . . . . . . . . . . . 6738.2. Salts of Carbonatodioxoamericiate~V!~-1!... 6778.3. Americium~III ! Formate. .. . . . . . . . . . . . . . . 6788.4. Americium~III ! Oxalate. . . . . . . . . . . . . . . . . 679
9. The Solubility of Curium Compounds. . . . . . . . . . 6849.1. Curium~III ! Oxalate. .. . . . . . . . . . . . . . . . . . 684
10. System Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68611. Registry Number Index. . . . . . . . . . . . . . . . . . . . . . 69112. Author Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 694
51
0
2
es,m-m,
emonided ofsur-
ataali-rrsntedeyereffi-edriathere,
ons onpHtaa-alas
alevantstetheby
neas. Inuch
be
tofol-y,J.f
f
. For
533533IUPAC-NIST SOLUBILITY DATA SERIES
List of Tables1. Interconversions between quantities used as
measures of solubilities. . . . . . . . . . . . . . . . . . . . . . 538
List of Figures1. Thorium tetrakis~formate!–formic acid–water
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542. Thorium bis~oxalate!–nitric acid–water system.. . 553. Thorium bis~oxalate!–ammonium oxalate–water
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 564. Uranium~VI ! dioxobis~acetate!–tri-n-butyl
phosphate–water system. . . . . . . . . . . . . . . . . . . . . 5905. Uranium~VI ! dioxo bis~trifluoroacetate!–diethyl
ether–water system. . . . . . . . . . . . . . . . . . . . . . . . . 5946. Uranium~VI ! dioxo bis~trifluoroacetate!–
tri-n-butyl phosphate–water system. . . . . . . . . . . . 5957. Uranium~VI ! dioxo bis~monochloroacetate!–
diethyl ether–water system. . . . . . . . . . . . . . . . . . . 5958. Uranium~VI ! dioxo bis~monochloroacetate!–
tri-n-butyl phosphate–water system. . . . . . . . . . . . 5979. Uranium~VI ! dioxo bis~trichloroacetate!–diethyl
ether–water system. . . . . . . . . . . . . . . . . . . . . . . . . 59810. Uranium~VI ! dioxo bis~trichloroacetate!–
tri-n-butyl phosphate–water system. . . . . . . . . . . . 59911. Uranium~VI ! dioxo bis~benzenesulfonate!–
tri-n-butyl phosphate–water system. . . . . . . . . . . . 60012. Uranium~VI ! dioxooxalate–sodium oxalate–
water system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60113. Uranium~VI ! dioxooxalate–ammonium oxalate–
water system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61714. Uranium~VI ! dioxooxalate–potassium oxalate–
water system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61815. Sodium carbonato dioxoneptunate~V!–sodium
perchlorate–carbon dioxide–water system. . . . . . . 61816. Sodium carbonato dioxoneptunate~V!–sodium
perchlorate–carbon dioxide–water system. . . . . . . 63417. Sodium carbonato dioxoneptunate~V!–sodium
perchlorate–carbon dioxide–water system. . . . . . . 63618. Sodium carbonato dioxoneptunate~V!–sodium
chloride–carbon dioxide–water system. . . . . . . . . . 63719. Sodium bis~carbonato! dioxoneptunate~V!–
sodium carbonate–sodium nitrate–carbondioxide–water system. . . . . . . . . . . . . . . . . . . . . . . 639
20. Plutonium~VI ! dioxocarbonate–sodiumhydrogen carbonate–sodium perchlorate–carbondioxide–water system. . . . . . . . . . . . . . . . . . . . . . . 649
21. Diplutonium~III !–tris~oxalate!–oxalic acid–nitric acid–water system. . . . . . . . . . . . . . . . . . . . . 658
22. Plutonium~IV ! bis~oxalate!–nitric acid–watersystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
23. Diamericium tris~carbonate!–sodiumperchlorate–carbon dioxide–water system. . . . . . . 674
24. Diamericium~III !–tris~oxalate!–oxalic acid–nitric acid–water system. . . . . . . . . . . . . . . . . . . . . 682
25. Dicurium~III !–tris~oxalate!–oxalic acid–nitricacid–water system. . . . . . . . . . . . . . . . . . . . . . . . . . 684
1. Preface
This volume presents solubility data of the carbonatsalts of carboxylic acids, and other carbon containing copounds of actinides. Covered are compounds of thoriuuranium, neptunium, plutonium, americium, and one systfor curium. No solubility data on carbonates or other carbcontaining compounds have been found for other actinelements. The literature has been covered up to the en1999, and there was a great effort to have the literaturevey as complete as possible.
Only those published results that report meaningful dwere considered for the volume. Papers that reported qutative results with statements like ‘‘sparingly soluble’’ o‘‘insoluble,’’ etc. were not considered. In addition to papethat published numerical data some papers that presedata in graphical form only were considered as well. Thwere considered for the volume either if no other data wavailable for the system, if the data were published in dicult to obtain older literature, or if the data were considerto be of importance for other reasons. The first two criteled the compiler to include sometimes papers in whichauthors failed to specify conditions such as temperatuequilibrium time, or methods of analysis. The last criterihas particularly been applied to many of the recent paperthe solubility of actinide carbonates where high precisiontitration technique was used to obtain the solubility dawhich were, however, reported in graphical form, or occsionally as solubility products, without reporting numericsolubility data. Another reason for including these data wtheir importance from the point of view of environmentscience since carbonates of actinides are substances relto the chemical behavior of actinides in radioactive warepositories. Phase diagrams were included for some ofmulticomponent systems. Of the many systems coveredthe volume relatively few were studied by more than olaboratory. Thus the opportunity to carry out evaluations hbeen limited, and only 17 systems have been evaluatedsome of these systems, however, there has been so muncertainty that even tentative solubility values could notrecommended.
Of all published papers only two remained unavailablethe compiler, and could not be included. These are thelowing two reports from the Institute of RadiochemistrTechnical University, Munich, Germany: M. F. Bernkopf,I. Kim, Report RCM-02884, 1984, reporting the solubility oAm~OH!CO3 in 0.1 mol dm23 NaClO4, and W. Runde, J. I.Kim, Report RCM-01094, 1994, reporting the solubility oNaAm~V!O2CO3 in 3 and 5 mol dm23 NaCl. For many com-pounds it was not possible to show theChemical AbstractsRegistry Numbers since these have not been assignedthis reason, the Registry Number index is incomplete.
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
-e
reinanre, rsh
nso
red
to
disI
rhaicmdi
inith
in
lco
o
on
eextsase
di-
e.
tedp-ed;
the
i-heC
ndiler
ler-d ifre-
onsin
ities
m-thisare
de-ion
lershedreci-thee.tratee-
edenes of
-
534534 JIRI HALA
2. Introduction to the Solubility DataSeries: Solubility of Solids in Liquids
2.1. The Nature of the Project
The Solubility Data project~SDP! has as its aim a comprehensive review of published data for solubilities of gasliquids, and solids in liquids or solids. Data of suitable pcision are compiled for each publication on data sheetsuniform format. The data for each system are evaluatedwhere data from independent sources agree sufficiently,ommended values are proposed. The evaluation sheetsommended values, and compiled data sheets are publion consecutive pages.
2.2. Compilations and Evaluations
The formats for the compilations and critical evaluatiohave been standardized for all volumes. A descriptionthese formats follows.
2.2.1. Compilations
The format used for the compilations is, for the most paself-explanatory. Normally, a compilation sheet is dividinto boxes, with detailed contents described below.
Components Each component is listed accordingIUPAC name, formula, and Chemical Abstracts~CA! Regis-try Number. The Chemical Abstracts name is also includethis differs from the IUPAC name, as are trivial namesappropriate. IUPAC and common names are croreferenced to Chemical Abstracts names in the Systemdex.
The formula is given either in terms of the IUPAC oHill 1 system and the choice of formula is governed by wis usual for most current users; i.e., IUPAC for inorgancompounds, and Hill system for organic compounds. Coponents are ordered on a given compilation sheet accorto:
~a! saturating components,~b! nonsaturating components, and~c! solvents.
In each of~a!, ~b! or ~c!, the components are arrangedorder according to the IUPAC 18-column periodic table wtwo additional rows:
Columns 1 and 2: H, alkali elements, ammonium, alkalearth elements
Columns 3–12: transition elementsColumns 13–17: boron, carbon, nitrogen groups; cha
genides, halogensColumn 18: noble gasesRow 1: Ce to LuRow 2: Th to the end of the known elements, in order
atomic number.The same order is followed in arranging the compilati
sheets within a given volume.
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
s,-ad,c-ec-ed
f
t,
iffs-n-
t
-ng
e
-
f
Original MeasurementsReferences are abbreviated in thforms given by Chemical Abstracts Service Source Ind~CASSI!. Names originally in other than Roman alphabeare given as transliterated by Chemical Abstracts. In the cof multiple entries~for example, translations! an asterisk in-dicates the publication used for compilation of the data.
Variables Ranges of temperature, pressure, etc., are incated here.
Prepared by The names of all compilers are given herExperimental Data Components are described as~1!, ~2!,
etc., as defined in the ‘‘Components’’ box. Data are reporin the units used in the original publication, with the excetion that modern names for units and quantities are use.g., mass percent for weight percent; mol dm23 for molar;etc. Usually, only one type of value~e.g., mass percent! isfound in the original paper, and the compiler has addedother type of value~e.g., mole percent! from computer cal-culations based on 1989 atomic weights.2 Temperatures areexpressed ast/°C, t/°F or T/K as in the original; if neces-sary, conversions toT/K are made, sometimes in the complations and always in the critical evaluation. However, tauthor’s units are expressed according to IUPArecommendations3 as far as possible.
Errors in calculations, fitting equations, etc., are noted, awhere possible corrected. Material inserted by the compis identified by the word ‘‘compiler’’ or by the compiler’sname in parentheses or in a footnote. In addition, compicalculated values of mole or mass fractions are includethe original data do not use these units. If densities areported in the original paper, conversions from concentratito mole fractions are included, but otherwise this is donethe evaluation, with the values and sources of the densbeing quoted and referenced.
Details of smoothing equations~with limits! are includedif they are present in the original publication and if the teperature or pressure ranges are wide enough to justifyprocedure and if the compiler finds that the equationsconsistent with the data.
The precision of the original data is preserved whenrived quantities are calculated, if necessary by the inclusof one additional significant figure. In some cases, compinote that numerical data have been obtained from publisgraphs using digitizing techniques. In these cases, the psion of the data can be determined by the quality oforiginal graph and the limitations of the digitizing techniquIn some cases graphs have been included, either to illusdata more clearly, or if this is the only information in thoriginal. Full grids are not usually inserted all it is not intended that users should read data from the graphs.
Method The apparatus and procedure are mentionbriefly. Abbreviations used in Chemical Abstracts are oftused here to save space, reference being made to sourcfurther detail if these are cited in the original paper.
Source and Purity of MaterialsFor each component, referred to as~1!, ~2!, etc., the following information~in thisorder and in abbreviated form! is provided if available in the
io
ehe
ao
m
atar
rum
mth
litre
f av
n
la
r ranh
omrerr
nvastson
rsresuitimh
i
ent-onit
theandoubtntalativelu-eri-t itubt-ta-id-tudeatew-tionfor
re,ny-eir
eluesly
on-re all
gf the
es,fled
insig-
-ayin
the
t is
535535IUPAC-NIST SOLUBILITY DATA SERIES
original paper: source and specified method of preparatproperties; degree of purity.
Estimated Error If estimated errors were omitted by thoriginal authors, and if relevant information is available, tcompilers have attempted to estimate errors~identified by‘‘compiler’’ or the compiler’s name in parentheses or infootnote! from the internal consistency of data and typeapparatus used. Methods used by the compilers for estiing and reporting errors are based on Ku and Eisenhart.4
Comments and/or Additional DataMany compilationsinclude this section which provides short comments relevto the general nature of the work or additional experimenand thermodynamic data which are judged by the compilebe of value to the reader.
References The format for these follows the format fothe Original Measurements box, except that final page nbers are omitted. References~usually cited in the originalpaper! are given where relevant to interpretation of the copile data, or where cross reference can be made to ocompilations.
2.2.2. Evaluations
The evaluator’s task is to assess the reliability and quaof the data, to estimate errors where necessary, and toommend ‘‘best’’ values. The evaluation takes the form osummary in which all the data supplied by the compiler habeen critically reviewed. There are only three boxes otypical evaluation sheet, and these are described below.
Components The format is the same as on the Compition sheets.
Evaluator The name and affiliation of the evaluator~s!and date up to which the literature was checked.
Critical Evaluation ~a! Critical text. The evaluatorchecks that the compiled data are correct, assesses theiability and quality, estimates errors where necessary,recommends numerical values based on all the publisdata ~including theses, patents and reports! for each givensystem. Thus, the evaluator reviews the merits or shortcings of the various data. Only published data are consideDocumented rejection of some published data may occuthis stage, and the corresponding compilations may bemoved.
The solubility of comparatively few systems is knowwith sufficient accuracy to enable a set of recommendedues to be presented. Although many systems have beenied by at least two workers, the range of temperatureoften sufficiently different to make meaningful comparisimpossible.
Occasionally, it is not clear why two groups of workeobtained very different but internally consistent sets ofsults at the same temperature, although both sets of rewere obtained by reliable methods. In such cases, a definassessment may not be possible. In some cases, two orsets of data have been classified as tentative even thougsets are mutually inconsistent.
~b! Fitting equations. If the use of a smoothing equation
n;
fat-
ntl
to
-
-er
yc-
ea
-
eli-d
ed
-d.ate-
l-ud-is
-lts
veorethe
s
justifiable the evaluator may provide an equation represing the solubility as a function of the variables reportedall the compilation sheets, stating the limits within whichshould be used.
~c! Graphical summary. In addition to~b! above, graphicalsummaries are often given.
~d! Recommended values. Data are recommended ifresults of at least two independent groups are availablethey are in good agreement, and if the evaluator has no das to the adequacy and reliability of the applied experimeand computational procedures. Data are reported as tentif only one set of measurements is available, or if the evaator considers some aspect of the computational or expmental method as mildly undesirable but estimates thashould cause only minor error. Data are considered as doful if the evaluator considers some aspect of the computional or experimental method as undesirable but still consers the data to have some value where the order of magniof the solubility is needed. Data determined by an inadequmethod or under ill-defined conditions are rejected. Hoever, references to these data are included in the evaluatogether with a comment by the evaluator as to the reasontheir rejection.
~e! References. All pertinent references are given heincluding all those publications appearing in the accompaing compilation sheets and those which, by virtue of thpoor precision, have been rejected and not compiled.
~f! Units. While the original data may be reported in thunits used by the investigators, the final recommended vaare reported in SI units3 when the data can be accurateconverted.
2.3. Quantities and Units Used in Compilation andEvaluation of Solubility Data
2.3.1. Mixtures, Solutions, and Solubilities
A mixture5 describes a gaseous, liquid or solid phase ctaining more than one substance, where the substances atreated in the same way.
A solution5 describes a liquid or solid phase containinmore than one substance, when for convenience one osubstances, which is called thesolvent, and may itself be amixture, is treated differently than the other substancwhich are calledsolutes. If the sum of the mole fractions othe solutes is small compared to unity, the solution is cala dilute solution.
The solubility of a solute 1~solid, liquid, or gas! is theanalytical composition of a saturated solution, expressedterms of the proportion of the designated solute in a denated solvent.6
‘‘Saturated’’ implies equilibrium with respect to the processes of dissolution and precipitation; the equilibrium mbe stable or metastable. The solubility of a substancemetastable equilibrium is usually greater than that ofsame substance in stable equilibrium.~Strictly speaking, it isthe activity of the substance in metastable equilibrium tha
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
lit
in-
tiv
oi
hyo
foaemtinu
eth
eit
-
asi
ys-con-
and
.
se
re.
he
isolu-
536536 JIRI HALA
greater.! Care must be taken to distinguish true metastabifrom supersaturation, where equilibrium does not exist.
Either point of view, mixture or solution, may be takendescribing solubility. The two points of view find their expression in the reference states used for definition of acties, activity coefficients, and osmotic coefficients.
Note that the composition of a saturated mixture~or solu-tion! can be described in terms of any suitable set of thermdynamic components. Thus, the solubility of a salt hydratewater is usually given as the relative proportions of androus salt in solution, rather then the relative proportionshydrated salt and water.
2.3.2. Physicochemical Quantities and Units
Solubilities of solids have been the subject of researcha long time, and have been expressed in a great many was described below. In each case, specification of the tperature and either partial or total pressure of the saturagaseous component is necessary. The nomenclature andfollow, where possible, IUPAC Green Book.3 A few quanti-ties follow the ISO standards7 or the German standard;8 see areview by Cvitasˇ9 for details.
A Note on Nomenclature The nomenclature of theIUPAC Green Book3 calls the solute component B and thsolvent component A. In compilations and evaluations,first-named component~component 1! is the solute, and thesecond~component 2 for a two-component system! is thesolvent. The reader should bear these distinctions in nomclature in mind when comparing equations given here wthose in theGreen Book.
1. Mole fraction of substance 1,x1 or x(1) ~condensedphases!, y1 ~gases!:
xl5n1Y (s51
c
ns , ~1!
wherens is the amount of substance ofs, andc is the numberof distinct substances present~often the number of thermodynamic components in the system!. Mole percentof sub-stance 1 is 100x1 .
2. Ionic mole fractionsof salt i, xi 1 ,xi 2 : For mixture ofsbinary saltsi, each of which ionizes completely intoni 1
cations andy i 2 anions, withy i5v i 11y i 2 and a mixture ofp nonelectrolytesk, of which some may be consideredsolvent components, a generalization of the definitionRobinson and Stokes gives:10
x1 i5y1 ix1 i
11( j 51s ~y j21!xj
, x2 i5y2 ix1 i
y1 ii 51...s,
~2!
x0k5xj
11( j 51s ~y j21!xj
, k5~s11!...c. ~3!
The sum of these mole fractions is unity, so that, withc5s1p
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
y
i-
-n-f
rys,
-g
nits
e
n-h
n
(i 51
s
~x1 i1x2 i !1 (i 5s11
c
xoi51. ~4!
General conversions to other units in multicomponent stems are complicated. For a three-component systemtaining nonelectrolyte 1, electrolyte 2, and solvent 3,
x15y12xo1
y122~y221!x12x25
x12
y122~y221!x12. ~5!
These relations are used in solubility equations for salts,for tabulation of salt effects of solubilities of gases.
3. Mass fractionof substance 1,w1 or w(1):
w15g1Y (s51
c
gs ~6!
wheregs is the mass of substances. Mass percentof sub-stance 1 is 100w1 . The equivalent termsweight fraction,weight percent, andg(1)/100 gsolutionare no longer used
4. Solute mole fractionof substance 1,xy,1 :
xs,15m1Y (s51
c8
ms5x1Y (s51
c8
xs , ~7!
where c8 is the number of solutes in the mixture. Thequantities are sometimes called Ja¨necke mole ~mass!fractions.11,12 Solute mass fractionof substance 1,ws,1 , isdefined analogously.
5. Solvent mole fractionof substance 1,xy,1 :
xy,15x1Y (s51
p
xs . ~8!
Here,p is the number of solvent components in the mixtuSolvent mass fractionof substance 1,wy,1 , is defined analo-gously.
6. Molality of solute 1 in a solvent 2,m1 :
m15n1 /n2M2 ~9!
SI base units: mol kg21. Here,M2 is the molar mass of thesolvent.
7. Aquamolality, Solvomolalityof substance 1 in a mixedsolvent with components 2, 3,13 m1
(3) :
m1~3!5m1M /M3 ~10!
SI base units: mol kg21. Here, the average molar mass of tsolvent is
M5xy,2M21~12yy,2!M3 ~11!
and xy , is the solvent mole fraction of component 2. Thterm is used most frequently in discussing comparative sbilities in water~component 2! and heavy water~component3! and in their mixtures.
8. Amount concentrationof solute 1 in a solution of vol-umeV, c1 :
c15@ formula of solute#5n1 /V ~12!
do
eerlyrrhihe.tiss
Atrl
ngth
.
, 1
on-usmic
culticalbe
ulddi-forods.
de-
ure
try
-
537537IUPAC-NIST SOLUBILITY DATA SERIES
SI base units: mol cm23. The symbolc1 is preferred to@for-mula of solute#, but both are used. The old termsmolarity,molar andmoles per unit volumeare no longer used.
9. Mass concentrationof solute 1 in a solution of volumeV, r1 :
r15g1 /V5c1M1 /V ~13!
SI base units: kg m23.10. Mole ratio, r A,B ~dimensionless!:9
r n,125n1 /n2 . ~14!
Mass ratio, symbolzA,B , may be defined analogously.9
11. Ionic strength, I m ~molality basis!, or I c ~concentrationbasis!:
I m51
2 (i
mizi2, I c5
1
2 (i
ciziz, ~15!
wherezi is the charge number of ioni. While these quantitiesare not used generally to express solubilities, they are useexpress the compositions of nonsaturating components. Fsingle salti with ions of charge numbersz1 andz2 ,
I m5uz1z2uymi , I c5uz1z2uyci . ~16!
Mole and mass fractions and mole ratios are appropriateither the mixture of the solution point of view. The othquantities are appropriate to the solution point of view onConversions between pairs of these quantities can be caout using the equation given in Table 1 at the end of tIntroduction. Other useful quantities will be defined in tprefaces to individual volumes or on specific data sheets
Salt hydrates are generally not considered to be saturacomponents since most solubilities are expressed in termthe anhydrous salt. The existence of hydrates or solvatenoted carefully in the critical evaluation.
Mineralogical names are also quoted, along with their CRegistry Numbers, again usually in the text and CA RegisNumbers~where available! are given usually in the criticaevaluation.
In addition to the quantities defined above, the followiare useful in conversions between concentrations and oquantities.
12. Density, r:
r5g/V5(sÞ1
c
rs ~17!
SI base units: kg m23. Hereg is the total mass of the system13. Relative density, d5r/r0: the ratio of the density of a
mixture at temperaturet, pressurep to the density of a ref-
tor a
to
.ieds
ngofis
y
er
erence substance at temperaturet8, pressurep8. For liquidsolutions, the reference substance is often water at 4 °Cbar.~In some cases 1 atm is used instead of 1 bar.! The termspecific gravityis no longer used.
Thermodynamics of SolubilityThermodynamic analysisof solubility phenomena provides a rational basis for the cstruction of functions to represent solubility data, and thaids in evaluation, and sometimes enables thermodynaquantities to be extracted. Both these aims are often diffito achieve because of a lack of experimental or theoretactivity coefficients. Where thermodynamic quantities canfound, they are not evaluated critically, since this task woinvolve examination of a large body of data that is notrectly relevant to solubility. Where possible, proceduresevaluation are based on established thermodynamic methSpecific procedures used in a particular volume will bescribed in the Preface to this volume.
2.4. References for the Introduction
1E. A. Hill, J. Am. Chem. Soc.22, 473 ~1900!.2IUPAC Commission on Atomic Weights and Isotopic Abundances, PAppl. Chem.63, 975 ~1989!.
3L. Mills et al., eds.,Quantities, Units and Symbols in Physical Chemis~The Green Book! ~Blackwell Scientific Publications, Oxford, UK, 1993!.
4H. H. Ku, p. 73; C. Eisenhart, p. 69; in H. H. Ku, ed.,Precision Measure-ment and CalibrationNBS Special Publication 300, Vol. 1~NBS, Wash-ington, 1969!.
5V. Gold et al., eds.,Compendium of Analytical Nomenclature~The GoldBook! ~Blackwell Scientific Publications, Oxford, UK, 1987!.
6H. Freiser and G. H. Nancollas, eds.,Compendium of Analytical Nomenclature ~The Orange Book! ~Blackwell Scientific Publications, Oxford,UK, 1987!, Sect. 9.1.8.
7ISO Standards Handbook,Quantities and Units~International StandardsOrganization, Geneva, 1993!.
8German Standard, DIN 1310,Zusammensetzung von Mischphasen~BeuthVerlag, Berlin, 1984!.
9T. Cvitas, Chem. Int17, 123 ~1995!.10R. A. Robinson and R. H. Stokes,Electrolyte Solutions, 2nd ed.~Butter-
worths, London, 1959!.11E. Z. Janecke, Anorg. Chem.51, 132 ~1906!.12H. L. Priedman, J. Chem. Phys.32, 1351~1960!.13J. W. Lorimer, R. Cohen-Adad, and J. W. Lorimer,Alkali Metal and
Ammonium Chlorides in Water and Heavy Water (Binary Systems), IU-PAC Solubility Data Series, Vol. 47~Pergamon, Oxford, UK, 1991!, p.495.
This section was written by:R. Cohen-Adad Villeurbeanne, FranceJ. W. Lorimer London, Ont, CanadaM. Salomon Sea Bright, NJ, USAM.-T. Saugier-Cohen Adad Villeurbenne, France
December 1995
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
538538 JIRI HALA
TABLE 1. Interconversions between quantities used as measures of solubilitiesc-component systems containingc21 solutesi and single solventc ~r—densityof solution:M1—molar masses ofi. For relations for two-component systems, set summations to 0!.
xi wi mi ci
xi5 xi
1
11Mi
McH 1
wi211(
jÞ1
c21 SMc
Mi21D wj
wiJ
1
111
miMc1(
jÞi
c21
mj
mi
1
111
McSr
ci2MiD1(
jÞ1
c21cj
ciS12
Mj
McD
wi5
1
11Mc
MiH1
xi211(
jÞ1
c21 SMj
Mc21D xj
xiJ wi
1
111
miM1S11(
jÞ1
c21
mjMjD ciMi
r
mi5
1
Mc S1
xi212(
jÞ1
c21xj
xiD
1
Mi S 1
wi212(
jÞ1
c21wj
wiD mi
1
1
ciSr2(
jÞ1
c21
cjMjD2Mi
ci5
r
Mi1McH1
xi211(
jÞ1
c21 SMj
Mc21D xj
xiJ rwi
Mi
r
1
miS11(
jÞ1
c21
mjMjD2Mj
ci
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
.24
h,th
eso
lutio
nw
asej
ecte
dfr
omth
eco
neby
gase
ous
radi
olyt
icpr
oduc
ts!.
Sam
ples
from
satu
rate
dso
lutio
ns(;
102
4m
l)w
ere
take
nin
toca
libra
ted
capi
llarie
san
dpl
aced
into
akn
own
volu
me
of1
mol
dm2
3H
NO
3.F
rom
this
solu
tion
sam
ples
for
coun
ting
of227 A
cw
ere
take
n.F
orm
icro
scal
em
easu
rem
ents
,th
ew
ork
was
done
in0.
5–
2m
lvo
lum
es.
Ac 2~
C2O
4!3
was
prec
ipita
ted
from
HN
O 3so
lutio
nw
itha
satu
rate
dso
lutio
nof~
NH
4!2C
2O4.
The
prec
ipita
tew
asce
ntrif
uged
and
repe
ated
lyw
ashe
dan
dco
vere
dw
ithw
ater
.T
opr
epar
esa
mpl
esfo
rco
untin
g,th
esa
mpl
esw
ere
take
nth
roug
ha
capi
llary
fille
dw
ithfin
egl
ass
fiber
byus
ing
am
icro
pum
p,in
to1
mL
1m
oldm
23
HN
O3
afte
rw
hich
the
pipe
ttew
asw
ashe
dse
vera
ltim
esw
ithth
isso
lutio
n.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
ctin
ium
tris~
oxal
ate!;
Ac 2
~C2O
4!3;
@726
4-35
-9#O
xalic
acid
;C 2
H2O
4;
@144
-62-
7#W
ater
;H 2
O;
@773
2-18
-5#
D.
M.
Ziv
and
I.A
.S
hest
akov
a,R
adio
khim
iya7,
166
–75
~196
5!.
riabl
es:
Pre
pare
dby
:
K:2
94/m
oldm
23:5
310
25–
0.5
J.H
alaan
dJ.
D.
Nav
ratil
Exp
erim
enta
lDat
a
Com
posi
tion
ofox
alic
acid
solu
tions
satu
rate
dat
21°C
with
Ac
2~C
2O4!
3a
C2H
2O4
2/m
oldm
23 )
pHA
c31
~mg
dm2
3 !A
c31
(106
mol
dm2
3 !A
c 2~C
2O4!
3
(106
c 1/m
oldm
23 !
C2O
422
b
(105
mol
dm2
3 !
53
102
53.
42.
511
5.5
0.69
53
102
43.
01.
25.
32.
62.
96
53
102
32.
30.
964.
22.
15.
85
53
102
10.
97.
85c
34.6
c17
.3c
8.0
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
not
repo
rted
.al
cula
ted
byau
thor
sfr
omto
tal
oxal
icac
idco
ncen
trat
ion,
pH,
and
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
55.
9310
22
mol
dm2
3 ,
a25
6.43
102
5m
oldm
23 .
his
incr
ease
inso
lubi
lity
ofA
c 2~C
2O4!
3w
asex
plai
ned
byth
eau
thor
sby
ash
arpe
rin
crea
sein
the
H1
ion
conc
entr
atio
nin
com
paris
onith
that
ofC 2
O422
ion,
and
part
lyby
com
plex
form
atio
n.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
onm
icro
scal
ew
asus
ed.
Ac
2~C
2O4!
3w
asec
ipita
ted
from
HN
O 3so
lutio
nw
ithsa
tura
ted
solu
tion
ofH
4!2C
2O4.
The
prec
ipita
tew
asce
ntrif
uged
and
repe
ated
lysh
edan
dco
vere
dw
ithox
alic
acid
solu
tion
inw
hich
the
lubi
lity
was
tobe
dete
rmin
ed,
and
stirr
edfo
r10
–15
h.T
his
rrin
gtim
ew
asta
ken
assu
ffici
ent
tore
ach
equi
libriu
m,
byal
ogy
toa
sim
ilar
stud
yof
La~III
!ox
alat
e.1T
opr
epar
em
ples
for22
7 Ac
coun
ting
~em
anat
ion
met
hod!,
cent
rifug
ing
elf
was
not
suffi
cien
tsi
nce
afil
mof
Ac
2~C
2O4!
3re
mai
ned
the
supe
rnat
ant
surf
ace.
The
sam
ples
wer
eta
ken
thro
ugh
api
llary
fille
dw
ithfin
egl
ass
fiber
byus
ing
am
icro
pum
p,in
to1
ml1
mol
dm2
3H
NO
3af
ter
whi
chth
epi
pette
was
was
hed
seve
ralt
imes
with
this
solu
tion.
Sou
rce
and
purit
yof
227 A
cpr
epar
atio
nan
dof
chem
ical
sus
edno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!S
olub
ility
:In
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e
Ref
eren
ces:
1 R.V
.Bry
zgal
ova
and
N.V
.Che
rnits
kaya
,Rad
iokh
imiy
a3,
478
~196
1!.
539539IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
3.T
heS
olub
ility
ofA
ctin
ium
Com
poun
ds
3.1.
Act
iniu
mO
xala
te
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
ctin
ium
tris~
oxal
ate!;
Ac 2
~C2O
4!3;
@726
4-35
-9#~2
!W
ater
,H 2
O;
@773
2-18
-5#D
.M
.Z
ivan
dI.
A.
She
stak
ova,
Rad
iokh
imiy
a7,16
6–
75~1
965!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:294
J.H
alaan
dJ.
D.
Nav
ratil
Exp
erim
enta
lDat
a
Sol
ubili
tyat
21°C
ofA
c 2~C
2O4!
3in
wat
era
Met
hod
Ac31
a
~mg
dm2
3 !A
c31b
106
mol
dm2
3A
c 2~C
2O4!
3
(106
c 1/m
oldm
23 !
1027
Ksp0
c
~mol
5dm
215
!10
27K
sp0d
~mol
5dm
215
!
Mic
ro0.
863.
861.
902.
702.
67
Ultr
amic
ro1.
56.
63.
342
.04.
22
Ultr
amic
ro1.
77.
53.
780
.07.
69
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asno
tre
port
ed.
b The
auth
ors
did
not
com
men
ton
the
diffe
renc
esin
resu
ltsob
tain
edby
the
two
met
hods
used
.c C
alcu
late
dby
the
auth
ors
asKsp0
5@A
c31#2 @
C2O
422#3 .
Inso
lutio
nsof
Ac 2~
C2O
4!3
inw
ater
the
auth
ors
assu
med
the
C2O
422co
ncen
trat
ion
tobe
equa
lto
thre
etim
esth
eex
perim
enta
llyfo
und
conc
entr
atio
nof
Ac
2~C
2O4!
3,an
dg
65
1.0.
d Cal
cula
ted
byco
mpi
ler
acco
rdin
gto
the
proc
edur
eou
tline
din
foot
note
,c.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Tw
ova
riatio
nsof
the
isot
herm
alm
etho
dw
ere
used
.F
orul
tram
icro
scal
em
easu
rem
ents
,30mg
~;2
mC
i!of
227 A
cw
asdi
ssol
ved
in0.
01m
l1.5
mol
dm23
HN
O3
and
prec
ipita
ted
with
0.25
mol
dm2
3~N
H4!
2C2O
4in
aw
orki
ngco
ne~v
olum
eof
10–
30m
l!un
der
am
icro
scop
e.A
fter1
hof
stand
ing
the
prec
ipita
tew
asce
ntrif
uged
,m
othe
rliq
uor
rem
oved
,re
peat
edly
was
hed,
cove
red
with
H 2O,
and
stirr
edfo
r10
–15
hin
ave
ssel
fille
dw
ithw
ater
orgl
ycer
ine
into
whi
chan
ultr
athe
rmoc
oupl
ew
aslo
wer
edto
mon
itor
the
tem
pera
ture
.T
his
stirr
ing
time
was
assu
med
tobe
suffi
cien
tto
reac
heq
uilib
rium
,by
anal
ogy
toa
sim
ilar
stud
yof
La~I
II!
oxal
ate,1
and
also
was
suita
ble
from
the
poin
tof
view
ofra
diol
ysis
effe
cts~for
equi
libra
tion
times
Sou
rce
and
purit
yof
227 A
cpr
epar
atio
nan
dof
chem
ical
sus
edno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e
Ref
eren
ces:
1 R.V
.Bry
zgal
ova
and
N.V
.Che
rnits
kaya
,Rad
iokh
imiy
a3,
478
~196
1!.
Co
~1!
~2!
~3!
Va
T/
c 2 (c a T b C K c T w Me
Iso
pr ~N wa
so sti
an sa its on ca
J
onth
esu
pern
atan
tsu
rfac
e.T
hesa
mpl
esw
ere
take
nth
roug
ha
capi
llary
fille
dw
ithfin
egl
ass
fiber
byus
ing
am
icro
pum
p,in
to1
ml1
mol
dm2
3 HN
O3
afte
rw
hich
the
pipe
ttew
asw
ashe
dse
vera
ltim
esw
ithth
isso
lutio
n.
~196
1!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
ctin
ium
tris~
oxal
ate!;
Ac 2
~C2O
4!3;
@726
4-35
-9#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
M.
L.S
alut
sky
and
H.
W.
Kirb
y,A
nal.
Che
m.28
,17
80–
2~1
956!
.
riabl
es:
Pre
pare
dby
:
/mol
dm2
3 :0.2
5/m
oldm
23 :0
.1J.
Hala
and
J.D
.N
avra
til
Exp
erim
enta
lDat
ao
mea
sure
men
tsw
ere
mad
eat
anun
spec
ified
room
tem
pera
ture
.T
hetw
ova
lues
ofac
tiniu
mco
ncen
trat
ion
inso
lutio
nof
0.25
ldm
23
oxal
icac
idan
dap
prox
imat
ely
0.1
mol
dm23
HN
O3
(pH
51.
2)sa
tura
ted
with
actin
ium
oxal
ate
wer
e0.
0149
and
0.01
58m
g/m
l.T
hese
wer
ere
calc
ulat
edby
the
com
pile
rsto
the
solu
bilit
yof
Ac
2~C
2O4!
3as
0.01
79an
d0.
0190
mg
Ac
2~C
2O4!
3/m
lor
3.28
102
5an
d3.
483
102
5m
oldm
23 .
The
aver
age
solu
bilit
yis
thenc
15
3.43
102
5m
oldm
23 .
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
eso
lubi
lity
data
wer
eob
tain
edfr
omth
em
ass
bala
nce
ring
the
prep
arat
ive
wor
kon
carr
ier
free
prec
ipita
tion
ofcr
ocon
cent
ratio
ns~7
mg
or0.
5m
Ci/m
L!of
227 A
c.A
fter
opr
ecip
itatio
nsw
ithdi
met
hylo
xala
te,
actin
ium
oxal
ate
was
rred
at60
–70
°Cfo
r30
min
,th
enfo
ran
addi
tiona
l90
min
anun
spec
ified
room
tem
pera
ture
,an
dfil
tere
d.T
hefil
trat
esre
anal
yzed
radi
oche
mic
ally
for
227 A
c.1
227 T
hw
asre
mov
eddo
uble
thor
ium
ioda
tepr
ecip
itatio
n,th
en223 R
aw
asm
oved
bydo
uble
prec
ipita
tion
ofB
a~N
O3!
2in
80%
HN
O 3.
iquo
tsof
the
solu
tion
cont
aini
ngth
efr
eshl
ypu
rified
tiniu
mw
ere
mou
nted
onst
ainl
ess
stee
ldis
ksan
da
-cou
nted
1da
yor
mor
eaf
ter
purifi
catio
n.T
heco
unts
wer
eco
rrec
ted
the
grow
thof
the
actin
ium
deca
ypr
oduc
ts.
Mac
roco
ncen
trat
ions
of22
7 Ac
wer
epr
epar
edby
neut
ron
irrad
iatio
nof
radi
um.F
rom
the
actin
ium
frac
tion
obta
ined
byio
nex
chan
geon
Dow
ex50
resi
n,ac
tiniu
mox
alat
ew
aspr
epar
edby
doub
leho
mog
eneo
uspr
ecip
itatio
nw
ithdi
met
hylo
xala
teat
60–
70°C
.D
imet
hylo
xala
tew
asre
crys
talli
zed
from
met
hano
l.
Est
imat
edE
rror
:S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 H.
W.
Kirb
y,U
.S.A
.E.C
.R
epor
tM
LM-7
73,
1952
.
540540 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
ctin
ium
tris~
oxal
ate!;
Ac 2
~C2O
4!3;
@726
4-35
-9#~2
!N
itric
acid
;H
NO
3;
@769
7-37
-2#~3
!W
ater
;H 2
O;
@773
2-18
-5#
D.
M.
Ziv
and
I.A
.S
hest
akov
a,R
adio
khim
iya7,
166
–75
~196
5!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:294
J.H
alaan
dJ.
D.
Nav
ratil
Exp
erim
enta
lDat
a
Fou
rm
easu
rem
ents
for
the
solu
bilit
yof
Ac
2~C
2O4!
3in
0.01
mol
dm2
3H
NO
3at
21°C
a
Ac31
~mg
dm2
3 !A
c31
(104
mol
dm2
3 !A
c 2~C
2O4!
3
(105
c 1/m
oldm
23 )
Ksp
d
(1026
mol
5dm
215
!C
2O422
(106
mol
dm2
3 )K
sp0e
(1027
mol
5dm
215
!
41.0
b1.
89.
014
.81.
667.
5
40.0
c1.
768.
813
.21.
626.
7
34.0
c1.
507.
54.
21.
232.
1
30.0
c1.
36.
52.
961.
21.
5
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asno
tre
port
ed.
b pH5
1.85
.c pH
52.
00.
d Cal
cula
ted
byau
thor
sasK
sp5
@Ac3
1#2
@C2O
422#3
.T
otal
oxal
ate
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asas
sum
edto
beeq
ualt
oth
ree
times
the
expe
rimen
tally
foun
dco
ncen
trat
ion
ofA
c2~
C2O
4!3.
The
equi
libriu
mco
ncen
trat
ion
ofC 2O
422w
asth
enca
lcul
ated
byus
ing
the
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
55.
9310
22
mol
dm2
3an
dK
a25
6.43
102
5m
oldm
23
~sou
rce
not
repo
rted!,
and
the
expe
ri-m
enta
llyde
term
ined
pH.
e Cal
cula
ted
byth
eau
thor
sby
taki
ngg6
50.
55as
the
mea
nio
nic
activ
ityco
effic
ient
ofA
c2~
C2O
4!3.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
don
mic
rosc
ale
was
used
.A
c2~
C2O
4!3
was
prec
ipita
ted
from
HN
O 3so
lutio
nw
ithsa
tura
ted
solu
tion
of~N
H4!
2C2O
4.T
hepr
ecip
itate
was
cent
rifug
edan
dre
peat
edly
was
hed
and
cove
red
with
oxal
icac
idso
lutio
nin
whi
chth
eso
lubi
lity
was
tobe
dete
rmin
ed,
and
stirr
edfo
r10
–15
h.T
his
stirr
ing
time
was
take
nas
suffi
cien
tto
reac
heq
uilib
rium
,by
anal
ogy
toa
sim
ilar
stud
yof
La~III
!ox
alat
e.1T
opr
epar
esa
mpl
esfo
r227 A
cco
untin
g~e
man
atio
nm
etho
d!,ce
ntrif
ugin
gits
elf
was
not
suffi
cien
tsi
nce
afil
mof
Ac
2~C
2O4!
3re
mai
ned
Sou
rce
and
purit
yof22
7 Ac
prep
arat
ion
and
ofch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 R.V
.Bry
zgal
ova
and
N.V
.Che
rnits
kaya
,Rad
iokh
imiy
a3,
478
Co
~1!
~2!
~3!
~4!
Va
c 2 c 3 Tw
mo
Ac
3 Me
Th
du ma
tw sti
at we
by re Al
ac for
for
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
purit
yw
asch
ecke
dby
mea
surin
gits
half-
life
and
max
imum
beta
ener
gy.
Th~N
O3!
4w
aspu
rified
from
beta
activ
ede
cay
prod
ucts
ofT
hBby
copr
ecip
itatio
nw
ithle
adsu
lfide
.S
ourc
eof
mat
eria
lsus
edno
tsp
ecifi
ed.
NaC
lO 4w
asa
chem
ical
lypu
repr
oduc
t,an
dw
asre
crys
talli
zed
from
wat
er.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
Sol
ubili
ty:
prec
isio
nof
the
radi
omet
ricm
etho
d6~2
–3%
!~a
utho
rs!.
Ref
eren
ces:
1 G.
T.
Sea
borg
,E
dito
r,Th
eA
ctin
ide
s~R
ussi
antr
ansl
atio
n!~I
nizd
at,
Mos
cow
,19
95!,
p.45
4.2 T
.S
ollm
ann
and
E.
D.
Bro
wn,
Am
.J.
Phy
s.18,
427
~190
7!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
oxoc
arbo
nate
;T
hOC
O 3;@
#S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
O.
I.Z
akha
rov
and
G.
G.
Mik
hailo
v,Iz
v.V
UZ
Khi
m.
Khi
m.
Tek
hnol
.3,
No.
1,45
–8~
1960
!.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0–
0.97
atco
nsta
ntio
nic
stre
ngth
of3.
00ld
m2
3
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofT
hOC
O 3in
Na 2
CO
3–
NaC
lO4
solu
tions
a
Na 2
CO
3
2/m
oldm
23 )
Th
~Mg
L2
1 !T
hOC
O 3(1
02m
oldm
23 )b
Sol
idph
asec
025
.30.
0109
ThO
CO 3•
8H2O
,@
#
0.00
760
.20.
0259
-
0.01
424
20.
1043
Th:
CO 25
1.0:
1.5
0.02
358
50.
252
Th:
CO 25
1.0:
1.8
0.03
110
000.
431
Th:
CO 25
1.0:
1.99
0.04
415
600.
672
Th:
CO 25
1.0:
2.16
0.07
725
601.
10-
0.09
128
101.
21-
0.14
638
001.
64d
0.16
147
302.
04d
0.19
151
502.
22d
0.20
957
702.
49d
0.27
266
602.
87d
0.37
583
703.
61d
0.41
591
203.
93d
0.54
1055
04.
55d
0.74
1120
04.
83d
0.97
1317
05.
68d
nic
stre
ngth
kept
cons
tant
at3.
00m
oldm2
3by
usin
gN
aClO 4
.al
cula
ted
byco
mpi
ler.
c Res
ults
base
don
two
orth
ree
anal
yses
inea
chm
easu
rem
ent.
d The
solid
phas
esh
owed
the
Na:
Th:
CO
3:H
2Ora
tioof
6:1:
5:12
.T
heau
thor
ssu
gges
ted
thre
epo
ssib
lefo
rmul
asfo
rit,
i.e.,
Na 6
Th~
CO
3!5•
12H
2O,
Na 4
Th~
CO
3!4•
Na 2
CO
3•12
H2O
,an
dN
a 2Th~
CO
3!3•
2Na 2
CO
3•12
H2O
.O
fth
ese
they
pref
erre
dth
ela
ston
ew
ithco
ordi
natio
nnu
mbe
rof
6fo
rth
oriu
m~IV
!.S
ince
the
Th~C
O3!
562io
nis
aw
elle
stab
lishe
dsp
ecie
s,3
the
com
pile
rte
ntat
ivel
ysu
gges
tsth
eN
a 6T
h~C
O3!
5•12
H2O
@123
86-4
7-9#
asa
mor
epr
obab
leso
lidph
ase.
541541IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.T
heS
olub
ility
ofT
horiu
mC
ompo
unds
4.1.
Tho
rium
Oxo
carb
onat
e
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
oxoc
arbo
nate
;T
hOC
O 3;
@#
~2!
Sod
ium
perc
hlor
ate;
NaC
lO 4;
@760
1-89
-0#~3
!W
ater
;H 2
O;
@773
2-18
-5#
O.
I.Z
akha
rov
and
G.
G.
Mik
hailo
v,Iz
v.V
UZ
Khi
m.
Khi
m.
Tek
hnol
.3,
No.
1,45
–8~
1960
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0
and
3J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofT
hOC
O 3in
wat
eran
d3.
0m
oldm
23
NaC
lO4
NaC
lO4
(c2
/mol
dm2
3 )T
hOC
O 3~m
gL2
1 !T
hOC
O 3(1
05c 1
/mol
dm2
3 )N
aClO
4
(c2
/mol
dm2
3 )T
hOC
O 3~m
gL2
1 !T
hOC
O 3(1
05c 1
/mol
dm2
3 )
022
.13.
000
25.9
23.0
23.6
21.2
25.3
22.1
61.
1a7.
17b
24.9
61.
2a8.
08
a Ave
rage
valu
e~au
thor
s!.b C
alcu
late
dby
com
pile
rfo
rth
eav
erag
eva
lue.
Add
ition
alin
form
atio
n:S
olub
ility
prod
uct
ofT
hOC
O 3w
asca
lcul
ated
byth
eau
thor
sasK
sp05
@ThO
21#@
CO
322#5
93
102
9m
ol2
dm2
6as
sum
ing
unit
activ
ityco
effic
ient
s.S
olid
phas
esw
ere
not
inve
stig
ated
but
base
don
mea
sure
men
tsin
the
ThO
CO
3–
Na 2
CO
3–
NaC
lO4–
H2O
syst
emin
the
sam
edo
cum
ent,
com
pile
ras
sum
esth
isto
beT
hOC
O3•
8H2O
,@
#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
equi
libra
ted
for
3–
10h
ina
ther
mos
tat.
Fre
shly
prep
ared
solid
was
used
sinc
eth
eso
lubi
lity
ofT
hOC
O 3w
asfo
und
tobe
som
ewha
tde
pend
ent
onth
eag
eof
the
prod
uct.
Sat
urat
edso
lutio
nsw
ere
anal
yzed
radi
omet
rical
lyfo
rth
oriu
m.
ThO
CO 3•8H
2Ow
aspr
epar
edby
prec
ipita
tion
ofT
h~N
O3!
4
solu
tion
labe
led
with
UX 1
~234 T
h!,
with
aneq
uiva
lent
amou
ntof
Na 2
CO
3so
lutio
n.1
The
prec
ipita
tew
asw
ashe
dw
ithw
ater
and
air
drie
d.A
naly
sis
~mas
s%!
:fo
und
57.5
ThO
2,10
.4C
O 2,
32.4
H 2O
,ca
lcul
ated
for
octa
hydr
ate~c
ompi
ler!
58.3
9T
hO2,
9.73
CO 2
,31
.87
H 2O
.U
X1
was
prep
ared
from
aged
uran
ium
salts
acco
rdin
gto
Sol
lman
nan
dB
row
n,2
and
itsra
dioc
hem
ical
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 mo
(c a Io b C
J
4.2.
Sal
tsof
Pen
taki
s„ca
rbon
ato…
Tho
rate
„6-…
Eva
luat
ion
ofth
eN
a 6T
h„C
O3…
5¿N
a 2C
O3¿
H2O
Sys
tem
mpo
nent
s:E
valu
ator
:
Hex
asod
ium
pent
akis~c
arbo
nato!
thor
ate;
Na 6T
h~C
O3!
5;96
10-6
2-9#
Sod
ium
carb
onat
e;N
a2C
O3;
@497
-19-
8#W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
Feb
ruar
y20
00
Crit
ical
Eva
luat
ion
The
solu
bilit
yin
this
syst
emw
asre
port
edin
two
docu
men
ts.
1,2
Con
side
rabl
edi
scre
panc
ies
betw
een
the
two
sets
ofda
ta,
exce
edin
gse
whi
chco
uld
bedu
eto
diffe
rent
cond
ition
s~i.
e.,
ioni
cst
reng
th,
rang
eof
Na
2CO
3co
ncen
trat
ion!
used
,ar
eob
viou
s.Lu
zhna
yaan
dva
leva
1re
port
edth
eso
lubi
lity
at29
8.15
Kof
Na
6Th~
CO
3!5
asa
func
tion
ofso
dium
carb
onat
eco
ncen
trat
ion
abov
e0.
78m
oldm
23
2CO
3.In
this
conc
entr
atio
nra
nge,
the
solu
bilit
yof
the
salt
was
repo
rted
tode
crea
sew
ithin
crea
sing
Na
2CO
3co
ncen
trat
ion~
the
auth
ors
reun
able
tom
easu
reth
eso
lubi
lity
atlo
wer
Na
2CO
3co
ncen
trat
ions
beca
use
ofhy
drol
ysis
ofN
a6T
h~C
O3!
5!.
On
the
cont
rary
,D
ervi
nd
Fau
cher
re2re
port
edth
eso
lubi
lity
ofN
a 6Th~
CO
3!5
toin
crea
sew
ithin
crea
sing
Na
2CO
3co
ncen
trat
ion
abov
e0.
4m
oldm2
3N
a 2C
O3
dex
plai
ned
the
data
byth
efo
rmat
ion
ofth
eT
h~C
O3!
682io
nin
solu
tion.
At
Na 2C
O3
conc
entr
atio
nbe
low
0.4
mol
dm23
and
atio
nic
engt
hof
2.0
mol
dm2
3 ,th
eso
lubi
lity
ofN
a 6Th~
CO
3!5
was
repo
rted
tobe
inde
pend
ent
onN
a2C
O3
conc
entr
atio
n.S
ince
ther
edo
esno
tem
tobe
any
obvi
ous
reas
onfo
rgi
ving
pref
eren
ceto
one
set
ofda
taov
erth
eot
her,
rein
vest
igat
ion
ofth
issy
stem
wou
ldbe
need
edfo
rea
final
conc
lusi
onab
out
the
solu
bilit
yof
Na
6Th~
CO
3!5
inaq
ueou
sN
a 2CO
3so
lutio
nsco
uld
bem
ade.
fere
nces
:
.P
.Lu
zhna
yaan
dI.
S.
Kov
alev
a,Z
h.N
eorg
.K
him
.6,
1440
~196
1!.
.D
ervi
nan
dJ.
Fau
cher
re,
Bul
l.S
oc.
Chi
m.
Fra
nce,
2930
~197
3!.
542542 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
equi
libra
ted
for
3–
10h
ina
ther
mos
tat.
Fre
shly
prep
ared
solid
was
used
sinc
eth
eso
lubi
lity
ofT
hOC
O 3w
asfo
und
tobe
som
ewha
tde
pend
ent
onth
eag
eof
the
prod
uct.
The
solid
was
equi
libra
ted
with
NaC
lO 4/N
a 2C
O3
solu
tions
atco
nsta
ntio
nic
stre
ngth
of3.
0m
oldm
23 .
Sat
urat
edso
lutio
nsw
ere
anal
yzed
for
thor
ium
eith
erra
diom
etric
ally
orgr
avim
etric
ally
,de
pend
ing
onth
oriu
mco
ncen
trat
ion,
and
for
carb
onat
etit
rimet
rical
lyus
ing
ast
anda
rdH
Cls
olut
ion.
Sol
idph
ases
wer
ean
alyz
edfo
rw
ater
and
carb
ondi
oxid
egr
avim
etric
ally
durin
gth
erm
alde
com
posi
tion,
and
inth
ere
sidu
eN
a2C
O3
was
dete
rmin
edtit
rimet
rical
lyan
dth
oriu
mgr
avim
etric
ally
.
ThO
CO 3•8H
2Ow
aspr
epar
edby
prec
ipita
tion
ofT
h~N
O3!
4
solu
tion
labe
led
with
UX 1
~234 T
h!,
with
aneq
uiva
lent
amou
ntof
Na 2
CO
3so
lutio
n.1
The
prec
ipita
tew
asw
ashe
dw
ithw
ater
and
air
drie
d.A
naly
sis
~mas
s%!
:fo
und
57.5
ThO
2,10
.4C
O 2,
32.4
H 2O
,ca
lcul
ated
for
octa
hydr
ate~c
ompi
ler!
58.3
9T
hO2,
9.73
CO 2
,31
.87
H 2O
.U
X1
was
prep
ared
from
aged
uran
ium
salts
acco
rdin
gto
Sol
lman
nan
dB
row
n,2
and
itsra
dioc
hem
ical
purit
yw
asch
ecke
dby
mea
surin
gha
lf-lif
ean
dm
axim
umbe
taen
ergy
.T
h~NO
3!4
was
purifi
edfr
ombe
taac
tive
deca
ypr
oduc
tsof
ThB
byco
prec
ipita
tion
with
lead
sulfi
de.
Sou
rce
ofm
ater
ials
used
not
spec
ified
.S
odiu
msa
ltsus
edw
ere
chem
ical
lypu
repr
oduc
ts,
and
wer
ere
crys
talli
zed
from
wat
er.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.R
adio
met
ricm
etho
d:pr
ecis
ion6
~2–
3!%
~aut
hors!
.
Ref
eren
ces:
1 G.
T.
Sea
borg
,E
dito
r,Th
eA
ctin
ide
s~R
ussi
antr
ansl
atio
n!~I
nizd
at,
Mos
cow
,19
95!,
p.45
4.2 T
.S
ollm
ann
and
E.
D.
Bro
wn,
Am
.J.
Phy
s.18,
427
~190
7!.
3 J.D
ervi
nan
dJ.
Fau
cher
re,
Bul
l.S
oc.
Chi
m.
Fra
nce,
2930
~197
3!.
Co
~1!
@1 ~2!
~3!
tho
Ko
Na
we
an an str
se be Re
1 N 2 J
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Mix
ture
sw
ere
equi
libra
ted
ina
ther
mos
tate
dba
thfo
r2
days
whi
chw
assu
ffici
ent
tore
ach
equi
libriu
m.
Sam
ples
ofth
esa
tura
ted
solu
tions
and
the
solid
phas
esw
ere
anal
yzed
grav
imet
rical
lyfo
rth
oriu
m,
sodi
uman
dca
rbon
ate.
Tho
rium
was
dete
rmin
edas
ThO
2an
dso
dium
asN
a 2S
O4.
To
dete
rmin
eca
rbon
ate,
the
sam
ple
was
reac
ted
with
dilu
teH
Cla
ndth
eca
rbon
diox
ide
evol
ved
was
abso
rbed
ina
wei
ghed
Utu
befil
led
with
asca
rite.
Sol
idph
ases
wer
eal
soch
arac
teriz
edby
the
met
hod
ofw
etre
sidu
es,
x-ra
ydi
ffrac
tion
and
ther
mal
anal
ysis
.
Sou
rce,
purit
y,or
met
hod
ofpr
epar
atio
nof
Na
6Th~
CO
3!5
was
not
spec
ified
.N
a 2CO
3w
aspr
epar
edfr
omre
agen
tgr
ade
deca
hydr
ate~s
ourc
eno
tsp
ecifi
ed!by
heat
ing
itin
asi
lver
dish
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
wer
egi
ven
toal
low
for
erro
res
timat
e.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Hex
asod
ium
pent
akis~c
arbo
nato!
thor
ate;
Na 6T
h~C
O3!
5;96
10-6
2-9#
Sod
ium
carb
onat
e;N
a2C
O3;
@497
-19-
8#or
Sod
ium
drog
enca
rbon
ate;
NaH
CO
3;@1
44-5
5-8#
Wat
er;
H 2O
;@7
732-
18-5#
J.D
ervi
nan
dJ.
Fau
cher
re,B
ull.
Soc
.Chi
m.F
ranc
ept
.1,2
930
–3
~197
3!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
15–
1.0~
Na 2
CO
3or
NaH
CO 3
!J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
ties
at25
°Cof
Na 6T
h~C
O3!
5in
aque
ous
solu
tions
ofN
a2C
O3
orN
aHC
O 3
CO
322or
HC
O32
(c2
/mol
dm2
3 )N
a 6T
h~C
O3!
5
~mol
dm2
3 !K
spd
~mol
7dm
221
!S
olid
phas
e
O322
#,0,
4a,b,
e0.
0215
1.37
Na 6T
h~C
O3!
5•12
H2O
CO
32#5
0.15
–1.
0a,c
0.02
08f
1.34
not
repo
rted
olut
ions
cont
aine
dco
nsta
ntco
ncen
trat
ion
ofN
a1
ions
of2.
0m
oldm
23 .
olut
ions
ofN
a 2CO
3.ol
utio
nsof
NaH
CO 3
.
sp5
@Th~
CO
3!562
#@N
a1#6 .
thig
her
carb
onat
eio
nco
ncen
trat
ion
the
solu
bilit
yof
Na
6Th~
CO
3!5
incr
ease
d~re
sults
wer
epr
esen
ted
ingr
aphi
calf
orm
only
!w
hich
was
terp
rete
dby
the
auth
ors
asbe
ing
due
toth
efo
rmat
ion
ofth
eT
h~C
O3!
682io
nin
the
satu
rate
dso
lutio
n.bt
aine
dby
auth
ors
asth
eav
erag
eof
eigh
tm
easu
rem
ents
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sso
lidw
aseq
uilib
rate
dfo
r48
with
Na 2
CO
3or
NaH
CO 3
solu
tions
ofco
nsta
ntN
a1io
nnc
entr
atio
nin
poly
ethy
lene
bottl
es.
The
salt
used
toin
tain
Na1
conc
entr
atio
nat
the
cons
tant
valu
ew
asno
tec
ified
.A
fter
equi
libra
tion,
thor
ium
was
dete
rmin
edin
the
tura
ted
solu
tions
titrim
etric
ally
with
ED
TA
.T
heeq
uilib
rium
lidph
ases
wer
ean
alyz
edto
asce
rtai
nth
atth
eir
com
posi
tion
not
chan
gedu
ring
equi
libra
tion.
Na 6
Th~
CO
3!5
was
prep
ared
bycr
ysta
lliza
tion
from
1m
oldm2
3T
h~N
O3!
4on
addi
tion
ofN
a 2CO
3so
lutio
nac
cord
ing
toD
ervi
ne
ta
l.1C
ompi
ler
assu
mes
that
Na
6Th~
CO
3!5•
12H
2Ow
aspr
epar
ed.S
ourc
ean
dpu
rity
ofm
ater
ials
used
wer
eno
tspe
cifie
d.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 J.D
ervi
n,J.
Fau
cher
re,
P.
Her
pin,
and
S.
Vol
itois
,B
ull.
Soc
.C
him
.F
ranc
e26
34~1
973!
.
543543IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Hex
asod
ium
pent
akis~c
arbo
nato!
thor
ate;
Na 6T
h~C
O3!
5;@1
9610
-62-
9#~2
!S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
N.P
.Luz
hnay
aan
dI.
S.K
oval
eva,
Zh.
Neo
rg.K
him
.6,
1440
–2
~196
1!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
810
2w
2/m
ass
%:7
.60
–22
.97
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
ty25
°Cof
Na 6
Th~
CO
3!5
inN
a 2C
O3
solu
tions
Na 2
CO
3
~mas
s%!
Na 2
CO
3
~mol
kg2
1 !aN
a 2C
O3
~mol
dm2
3 !aT
h~C
O3!
2
~mas
s%!
Th~
CO
3!2
~mol
kg2
1 !aT
h~C
O3!
2
~mol
dm2
3 !aD
ensi
ty~g
cm2
3 !S
olid
phas
eb
7.60
0.78
020.
7887
2.20
0.06
928
0.07
412
1.09
60A
8.59
0.89
020.
8984
2.05
0.06
517
0.07
047
1.10
62A
10.8
81.
152
1.15
71.
640.
0532
50.
0590
31.
1293
A
14.5
71.
604
1.59
51.
340.
0452
70.
0519
91.
1668
A
18.6
72.
155
2.11
41.
090.
0385
90.
0460
31.
2090
A
20.0
22.
347
2.31
01.
010.
0363
30.
0442
51.
2336
A
22.8
12.
767
2.67
60.
860.
0320
00.
0397
51.
2562
A1
B
22.9
72.
796
2.69
80.
960.
0358
50.
0444
71.
2561
A1
B
22.7
02.
750
2.66
40.
860.
0319
60.
0397
01.
2562
A1
B
22.6
02.
723
2.63
10.
530.
0195
90.
0243
31.
2503
A
22.5
52.
709
2.61
70.
380.
0140
10.
0174
11.
2488
B
22.7
72.
730
2.62
1—
——
1.24
33B
a Cal
cula
ted
byco
mpi
ler.
b A:N
a 6T
h~C
O3!
5•12
H2O
;@1
2386
-47-
9#B
:Na 2
CO
3•10
H2O
@613
2-02
-1#.
Add
ition
alin
form
atio
n:T
heso
lubi
lity
bran
chco
rres
pond
ing
toth
ecr
ysta
lliza
tion
ofN
a6T
h~C
O3!
5•12
H2O
was
stud
ied
only
upto
2.20
mas
s%
Th
~CO
3!2
~i.e.
,at
Na 2
CO
3co
ncen
trat
ions
.7.
60m
ass
%!si
nce
the
salt
hydr
olyz
edat
high
erth
oriu
mco
ncen
trat
ions
.T
heph
ase
diag
ram
show
edon
etr
iple
poin
tat
22.8
3m
ass
%N
a2C
O31
0.86
mas
s%
Th~C
O3!
2w
ithA
and
Bas
the
coex
istin
gso
lidph
ases
.
Aux
iliar
yIn
form
atio
n
Co
~1!
@1 ~2!
hy ~3!
Va
T/
c 2 @C @H a S b S c S d K e A in f O Me
Iso
h co ma
sp sa so did
J
did
not
chan
gedu
ring
equi
libra
tion.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 J.D
ervi
n,J.
Fau
cher
re,
P.
Her
pin,
and
S.
Vol
itois
,B
ull.
Soc
.C
him
.F
ranc
e26
34~1
973!
.
4.3.
Gua
nidi
nium
Tris
fluor
otris
„ca
rbon
ato…
Tho
rate
„6-…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Pen
tagu
anid
iniu
mtr
is~fluo
ro!-
tris
~car
bona
to!th
orat
e;H
6N3!
5ThF
3~C
O3!
3;@5
5328
-36-
4#G
uani
dini
umca
rbon
ate;
(CH 6N
3!2C
O3;
@593
-85-
1#G
uani
dini
umflu
orid
e;C
H 6N3F
;@3
8078
-70-
5#W
ater
;H 2
O;
@773
2-18
-5#
J.D
ervi
nan
dF
.F
rom
age,
Bul
l.S
oc.
Chi
m.
Fra
nce
pt.
1,13
3–
7~1
975!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
05–
0.30
/mol
dm2
3 :0.
03–
0.30
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
of(C
H 6N
3!5T
hF3~
CO
3!3
inaq
ueou
sso
lutio
nsof
guan
idin
ium
carb
onat
ean
dgu
anid
iniu
mflu
orid
ea
CO
322
~mol
dm2
3 !F2
~mol
dm2
3 !(C
H6N
3!3T
hF3~
CO
3!3
~mol
dm2
3 !
0.30
b0.
25–
0.30
b0.
0032
d
0.05
–0.
30c
0.30
c0.
032d
olid
phas
ew
as(C
H 6N3!
6Th~
CO
3!5
@553
28-3
6-4#.
olut
ions
cont
aini
ngva
ryin
gflu
orid
eio
nco
ncen
trat
ion
and
cons
tant
guan
idin
ium
ion
conc
entr
atio
nof
1.0
mol
dm2
3at
cons
tant
ioni
ctr
engt
hof
1.3
mol
dm2
3 .ol
utio
nsco
ntai
ning
vary
ing
carb
onat
eio
nco
ncen
trat
ion
and
cons
tant
guan
idin
ium
ion
conc
entr
atio
nof
1.0
mol
dm2
3 .Io
nic
stre
ngth
ried
from
1.0
to1.
3m
oldm
23 .
heeq
uilib
rium
solid
phas
ew
asno
tst
ated
expl
icitl
y.T
heco
mpi
ler
assu
mes
this
tobe
(CH
6N3!
3ThF
3~C
O3!
3.A
tth
eco
ncen
trat
ions
ofO
322an
dF2
ions
used
,th
eso
lidph
ase
was
ineq
uilib
rium
with
the
ThF
3~C
O3!
352io
n.A
tflu
orid
eio
nco
ncen
trat
ions,
0.20
mol
dm2
3 ,e
solu
bilit
yof
(CH 6
N3!
3ThF
3~C
O3!
3de
crea
sed
toth
atof
(CH 6N
3!6T
h~C
O3!
5~D
ervi
nan
dF
auch
erre1 !
due
toth
etr
ansf
orm
atio
nof
the
hF3~
CO
3!352
ion
toT
h~C
O3!
562.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sso
lidw
aseq
uilib
rate
dfo
r36
with
solu
tions
cont
aini
ngde
sire
dco
ncen
trat
ions
ofan
idin
ium
carb
onat
ean
dflu
orid
e.T
hesu
spen
sion
was
ntrif
uged
and
filte
red,
and
the
solid
resi
due
was
anal
yzed
toce
rtai
nth
atits
com
posi
tion
did
not
chan
gedu
ring
uilib
ratio
n.In
the
satu
rate
dso
lutio
nsth
oriu
mw
asde
term
ined
grav
imet
rical
lyas
ThO 2
afte
rev
apor
atio
nof
the
solu
tion
and
igni
tion
the
resi
due
to80
0°C
.
(CH
6N3!
5ThF
3~C
O3!
3w
aspr
epar
edby
prec
ipita
tion
at50
to60
°Cfr
omso
lutio
nsco
ntai
ning
1m
oldm2
3gu
anid
iniu
mio
nw
ithF2
/CO
322ra
tiova
ryin
gfr
om1
to6,
byad
ding
aco
ncen
trat
edso
lutio
nof
Th~N
O3!
4.A
naly
sis
~mas
s%!
:fo
und
30.4
Th,
7.45
F,
12.2
C,
27.5
N,
3.91
H,
17.3
CO
2;ca
lcul
ated
30.2
Th,
7.41
F,
12.5
C,
27.3
N,
3.90
H,
17.2
CO
2.S
ourc
ean
dpu
rity
ofm
ater
ials
used
was
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 J.D
ervi
nan
dJ.
Fau
cher
re,
Bul
l.S
oc.
Chi
m.
Fra
nce
2930
~197
3!.
544544 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Hex
agua
nidi
nium
pent
akis~c
arbo
nato!
thor
ate;
(CH
6N3!
6Th~
CO
3!5;
@514
07-0
2-4#
~2!
Gua
nidi
nium
carb
onat
e;(C
H 6N3!
2CO
3;@5
93-8
5-1#;
orG
uani
dini
umhy
drog
enca
rbon
ate;
(CH
6N3!
HC
O3;
@124
-46-
9#~3
!G
uani
dini
umni
trat
e;(C
H 6N3!
NO
3;@5
06-9
3-4#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
J.D
ervi
nan
dJ.
Fau
cher
re,B
ull.
Soc
.Chi
m.F
ranc
ept
.1,2
930
–3
~197
3!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
25–
1.0~~
CH
6N3!
2CO
3);
0.20
–0.
60(C
H 6N
3!H
CO
3)
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
ties
at25
°Cof
(CH 6N
3!6T
h~C
O3!
5in
aque
ous
solu
tions
ofgu
anid
iniu
mca
rbon
ate
orgu
anid
iniu
mhy
drog
enca
rbon
ate
CO
322or
HC
O32
(c2
/mol
dm2
3 )(C
H6N
3!6T
h~C
O3!
5
~mol
dm2
3 !K
spd
~mol
7dm
221
!S
olid
phas
e
0.25
–0.
35(C
O 322)a,
b0.
0017
c0.
109
(CH 6
N3!
6Th~
CO
3!5•
4H2O
0.2
–0.
60(H
CO 32
)e0.
0015
7f0.
10no
tre
port
ed
a Gua
nidi
nium
carb
onat
eso
lutio
ns;g
uani
dini
umio
nco
ncen
trat
ion
kept
at2.
0m
oldm
23 ,i
onic
stre
ngth
varie
dfr
om2.
25to
3.0
mol
dm23 .
b At
high
erca
rbon
ate
ion
conc
entr
atio
ns,
the
solu
bilit
yof
the
salt
incr
ease
dw
ithin
crea
sing
carb
onat
eio
nco
ncen
trat
ion
~res
ults
pres
ente
din
grap
hica
lfor
mon
ly!.
The
incr
easi
ngso
lubi
lity
was
expl
aine
dB
yth
eau
thor
sas
bein
gdu
eto
the
form
atio
nof
the
Th
~CO
3!682
ion
inth
esa
tura
ted
solu
tions
.c A
vera
geva
lue
offo
urm
easu
rem
ents~aut
hors!
.d K
sp5
@Th~
CO
3!562
#@C
H6N
31#6 .
e Gua
nidi
nium
hydr
ogen
carb
onat
eso
lutio
ns;
guan
idin
ium
ion
conc
entr
atio
nan
dio
nic
stre
ngth
kept
at2.
0m
oldm
23 .
f Obt
aine
dby
auth
ors
asth
eav
erag
eof
seve
nm
easu
rem
ents
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
equi
libra
ted
for
48h
with
guan
idin
ium
carb
onat
eor
guan
idin
ium
hydr
ogen
carb
onat
eso
lutio
nsin
poly
ethy
lene
bottl
es.
Ioni
cst
reng
thw
aske
ptat
the
desi
red
valu
eby
usin
ggu
anid
iniu
mni
trat
e.A
fter
equi
libra
tion,
thor
ium
was
dete
rmin
edin
the
satu
rate
dso
lutio
nstit
rimet
rical
lyw
ithE
DT
A.
The
equi
libriu
mso
lidph
ases
wer
ean
alyz
edto
asce
rtai
nth
atth
eir
com
posi
tion
(CH
6N3!
6Th~
CO
3!5•
4H2O
was
prep
ared
bypr
ecip
itatio
nw
ithgu
anid
iniu
mca
rbon
ate
ofa
1m
oldm
23
Th~
NO
3!4
solu
tion
acco
rdin
gto
Der
vine
ta
l.1S
ourc
ean
dpu
rity
ofm
ater
ials
used
wer
eno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Co
~1!
(C ~2!
~3!
~4!
Va
T/
c 2 c 3 a S b S s c S va d T C th T Me
Iso
h gu ce as eq
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.5.
Tho
rium
For
mat
e
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
tetr
akis~
form
ate!
;T
h~H
CO
2!4;
@562
-99-
2#F
orm
icac
id;
H 2C
O2;
@64-
18-6
#W
ater
;H 2
O;@
7732
-18-
5#
B.
Cla
udel
and
B.
Men
tzen
,B
ull.
Soc
.C
him
.F
ranc
e15
47–
50~1
966!
.
riabl
es:
Pre
pare
dby
:
K:
298
J.H
ala
Exp
erim
enta
lDat
aP
hase
diag
ram
ofth
eT
h~HC
O2!
4–
H2C
O2–
H2O
~com
posi
tion
inm
ass
%!at
25°C
was
repo
rted
ingr
aphi
calf
orm~s
eeF
ig.
1!.T
hely
num
eric
alva
lue
repo
rted
was
that
ofth
eso
lubi
lity
ofT
h~H
CO
2!4
inw
ater
,i.e
.,80
.7g
Th~H
CO
2!4.
3H2O
in1
dm2
3w
ater
.T
his
was
calc
ulat
edby
the
com
pile
rtom
15
0.17
2m
olkg
21 .
FIG
.1.
Tho
rium
tetr
akis~f
orm
ate!
–fo
rmic
acid
–w
ater
syst
em.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.T
h~HC
O2!
4•3H
2Ow
aspr
epar
edby
actio
nof
hot
40%
form
icac
idon
fres
hly
prec
ipita
ted
Th~O
H! 4
.T
hesa
ltcr
ysta
llize
dup
onev
apor
atio
nor
cool
ing.
Ana
lysi
s,fo
und/
calc
ulat
ed,
for
Th~
HC
O2!
4•3H
2O~m
ass
%):
Th
49.8
2/49
.78,
HC
O 2238
.65/
38.6
3,H 2
O12
.45/
11.5
9.
545545IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.4.
Hex
amm
inec
obal
t„III…
Pen
taki
s„ca
rbon
ato…A
qua
Tho
rate
„6-…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Bis
~hex
amm
inec
obal
t~III
!!pe
ntac
arbo
nato
-aqu
atho
rate
;@C
o~N
H3!
6#2@
Th~
CO
3!5H
2O#;
@#
~2!
Wat
er;
H 2O
;@7
732-
18-5#
orA
ceto
ne;
C 3H
6O;
@67-
64-1
#
K.
Uen
oan
dM
.H
oshi
,J.
Inor
g.N
ucl.
Che
m.32,
3817
–22
~197
0!
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
of@C
o~N
H3!
6#2@
Th~
CO
3!5H
2O#
inw
ater
and
acet
onea
Sol
vent
Th
~mg/
100
g!so
lven
t@C
o~N
H3!
6#2@
Th~
CO
3!5H
2O#
(105
m1
/mol
kg2
1 )b
Wat
er0.
52.
15
Ace
tone
0.1
0.43
1
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
ofdr
yth
oriu
mco
mpo
und
was
allo
wed
tost
and
inth
eso
lven
tfo
r24
h.T
heam
ount
of60
Co~
NH
3!631
inth
esa
tura
ted
solu
tion
was
dete
rmin
edra
diom
etric
ally
.
@Co~
NH
3!6#
2@T
h~C
O3!
5H2O
#w
aspr
epar
edby
prec
ipita
tion
with
60C
o~N
H3!
6Cl 3
ofth
oriu
m~I
V!
from
2m
oldm
23
(NH
4!2C
O3.
The
prec
ipita
tew
asw
ashe
dw
ithw
ater
,an
dva
cuum
drie
d.A
naly
sis
~mas
s%!
:fo
und
Th
25.0
3,C
o~NH
3!6
34.8
9,C
O3
32.4
2;ca
lcul
ated
for @
Co~
NH
3!6#
2@T
h~C
O3!
5H2O
#•3H
2O,
Th
25.0
5,C
o~NH
3!6
34.7
8,C
O 332
.39.
Tho
rium
solu
tion
used
was
purifi
edby
ion
exch
ange
and
solv
ent
extr
actio
nm
etho
ds.
Sou
rce
and
purit
yof
thor
ium
salt
used
not
spec
ified
.C
o~N
H3!
6Cl 3
was
prep
ared
acco
rdin
gto
Bilt
z.1D
istil
led
wat
eran
dre
agen
tgr
ade
acet
one
~sou
rce
not
spec
ified!
wer
eus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
5K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 W.
Bilt
z,Z
.A
norg
.A
llgem
.C
hem
.83,
177
~191
4!
Co
~1!
~2!
~3!
Va
T/
on re
J
Th~
HC
O2!
4–
HC
O2–
H2O
syst
emre
port
edin
the
sam
edo
cum
ent
the
auth
ors
stat
edpr
ecis
ion
of60.
05K
for
tem
pera
ture
and
6~2
–3!
%fo
rth
era
diom
etric
met
hod
used
for
thor
ium
dete
rmin
atio
n.
4.6.
Tho
rium
Ace
tate
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
tetr
akis~
acet
ate!;
Th~
C2H
3O2!
4;@1
3075
-28-
0#W
ater
;H 2
O;
@773
2-18
-5#K
.N.K
oval
enko
,D.V
.Kaz
ache
nko,
and
O.N
.Sam
sono
va,Z
h.N
eorg
.K
him
8,22
22–
5~19
63!.
riabl
es:
Pre
pare
dby
:
K:
298
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofT
h~C
2H3O
2!4
at25
°Cis
repo
rted
tobe
1.5
gT
h~C
2H3O
2!4
in10
0g
wat
er~c
ompi
ler
calc
ulat
edm
1
0.03
20m
olkg
21 !
.A
dditi
onal
info
rmat
ion:
The
pHof
0.00
025
–0.
008
mol
dm23
solu
tions
ofT
h~C2H
3O2!
4va
ried
from
4.22
to3.
95.
Und
erth
eas
sum
ptio
nth
atth
ehy
drol
ysis
the
salt
proc
eede
dto
Th~O
H! 4
the
auth
ors
calc
ulat
edth
esa
ltto
behy
drol
yzed
to84
.2%
.In
am
ore
rece
ntst
udy,
1th
epr
oduc
tsof
drol
ysis
wer
eid
entifi
edto
bea
mix
ture
ofba
sic
thor
ium
acet
ates
whi
chfo
rmed
collo
idso
lutio
ns,a
ndth
eso
lubi
lity
ofT
h~C
2H3O
2!4
was
port
edto
vary
with
inth
era
nge
of1.
5–
1.9
g/10
0g
wat
er.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Anh
ydro
usth
oriu
mac
etat
ew
asob
tain
edby
reac
ting
Th~
NO
3!4•
5H2O
with
exce
ssac
etic
anhy
drid
e.T
hepr
oduc
t,in
solu
ble
inac
etic
anhy
drid
e,w
asfil
tere
d,w
ashe
dw
ithac
etic
anhy
drid
ean
dva
cuum
drie
dov
erN
aOH
.A
naly
sis,
foun
d/ca
lcul
ated
for
Th~C
2H3O
2!4
~mas
s%!
:T
h49
.24/
49.5
6,C
20.2
5/20
.50,
H2.
52/2
.56.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 A.
K.
Mol
odki
n,O
.M
.Iv
anov
a,an
dG
.A
.S
kotn
ikov
a,Z
h.N
eorg
.K
him
.12,
116
~196
7!.
546546 JIRI HALA
4.5.
1.T
horiu
mF
orm
ate
Trih
ydra
te
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
tetr
akis~
form
ate!
trih
ydra
te;
Th~H
CO
2!4•
3H2O
;@1
3266
-86-
9#~2
!V
ario
usso
lven
ts
B.
Cla
udel
and
B.
Men
tzen
,B
ull.
Soc
.C
him
.F
ranc
e15
47–
50~1
966!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Th~
HC
O2!
4•3H
2Oat
25°C
inva
rious
solv
entsa
Sol
vent
Th~
HC
O2!
4.3H
2O~m
gL2
1 !T
h~H
CO
2!4.
3H2O
(c1/1
05m
oldm
23 !
b
oxira
ne~e
thyl
ene
oxid
e!;C
2H4O
;@9
5-21
-8#
10.7
2.30
acet
one;
C 3H6O
;@6
7-64
-1#
17.2
3.69
tric
hlor
oeth
ylen
e;C 2H
Cl 3
;@7
9-01
-6#
17.2
3.69
etha
nol;
C 2H
6O;
@64-
17-5
#23
.65.
06
benz
ene;
C 6H6;
@71-
43-2
#36
.57.
83
carb
onte
trac
hlor
ide;
CC
l4;
@56-
23-5
#47
.210
.1
2-pr
opan
ol;
C 3H
8O;
@67-
63-0
#57
.912
.4
met
hano
l;C
H 4O
;@6
7-56
-1#
137.
329
.5
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
The
solv
ents
wer
eeq
uilib
rate
dw
ithex
cess
Th~H
CO
2!4•
3H2O
labe
led
with
228 T
h~1
0m
Cig
21 ;
3.73
105
Bq
g21 !
until
equi
libriu
mw
asre
ache
d.A
sam
ple
of1
cm3 of
the
satu
rate
dso
lutio
nw
asan
alyz
edfo
rT
hco
nten
tby
mea
surin
ggac
tivity
inth
era
nge
of0
–4
MeV
.A
ctiv
ities
ofth
esa
tura
ted
solu
tions
wer
eco
mpa
red
agai
nst
that
ofa
stan
dard
solu
tion
cont
aini
ng1
gT
h~H
CO
2!4•
3H2O
/dm
3w
ithsp
ecifi
cac
tivity
of0.
01m
Cic
m2
3~3
70B
qcm
23 !.
228 T
h-la
bele
dT
h~HC
O2!
4•3H
2Ow
aspr
epar
edby
actio
nof
hot
40%
form
icac
idon
fres
hly
prec
ipita
ted22
8 Th~
OH
! 4,
prep
ared
from
228 T
h~N
O3!
4.T
hesa
ltcr
ysta
llize
dup
onev
apor
atio
nor
cool
ing.
For
anal
ysis
,se
eth
eda
tash
eet
for
the
Th~
HC
O2!
4–
HC
O2–
H2O
syst
emof
the
sam
eor
igin
aldo
cum
ent.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
prec
isio
nno
tsp
ecifi
edsp
ecifi
ed;
for
the
Co
~1!
~2!
Va
T/
5 of hy re Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Ref
eren
ces:
1D
.Pat
naik
and
S.P
anda
,J.I
ndia
n.C
hem
.Soc
.12
,877
~195
6!.
4.7.
Tho
rium
Car
boxy
late
s
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
tetr
akis
~car
boxy
late
s!;~O
2C~C
H2!
nC
H3!
4
Pot
assi
umni
trat
e;K
NO 3;
@775
7-79
-1#W
ater
;H 2
O;
@773
2-18
-5#
L.D
.S
kryl
ev,
O.
V.
Per
lova
,V
.F
.S
azon
ova,
and
C.
V.
Fel
dman
,Iz
v.V
UZ
Tsv
et.
Met
alN
o.4,
23–
8~199
0!.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.0
18J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyin
wat
erof
thor
ium
carb
oxyl
ates
at20
°Ca
Sal
tT
h~O
2C~C
H2!
nC
H3!
4
(c1/1
06m
oldm
23 !
oriu
mte
trak
is~de
cano
ate!;
Th~
O2C
~CH
2!8C
H3!
4;@
#1.
25
oriu
mte
trak
is~un
deca
noat
e!;T
h~O
2C~C
H2!
9CH
3!4;
@134
893-
75-7#
0.91
oriu
mte
trak
is~do
deca
noat
e!;T
h~O
2C~C
H2!
10C
H3!
4;@1
0730
5-72
-6#0.
67
oriu
mte
trak
is~tr
idec
anoa
te!;T
h~O
2C~C
H2!
11C
H3!
4;@1
3489
3-76
-8#0.
51
oriu
mte
trak
is~te
trad
ecan
oate!;
Th~
O2C
~CH
2!12
CH
3) 4
;@10
7176
-04-
5#0.
37
oriu
mte
trak
is~pe
ntad
ecan
oate!;
Th~
O2C
~CH
2!13
CH
3!4;
@#
0.27
oriu
mte
trak
is~he
xade
cano
ate!;T
h~O
2C~C
H2!
14C
H3!
4;@
#0.
19
llsa
tura
ted
solu
tions
show
edpH
of6.
0,co
ntai
ned
0.01
08m
oldm
23
KN
O3,
and
wer
eof
collo
idal
natu
re.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
tass
ium
salts
ofth
eco
rres
pond
ing
carb
oxyl
icac
ids,
inth
em
of0.
01m
oldm
23
solu
tions
,w
ere
adde
dto
aT
h~N
O3!
4
lutio
nin
stoi
chio
met
ricam
ount
sre
quire
dfo
rth
efo
rmat
ion
the
corr
espo
ndin
gth
oriu
msa
lts.
Sat
urat
edso
lutio
nsw
ere
alyz
edfo
rth
eth
oriu
mco
nten
tne
phel
omet
rical
ly.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
547547IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
tetr
akis~
acet
ate!;
Th~
C2H
3O2!
4;@1
3075
-28-
0#~2
!S
olve
nts
T.M
uniy
appa
nan
dB
.Anj
aney
alu,
Pro
c.In
dian
Aca
d.S
ci.
A45
,41
2–
7~1
957!
,C
urr.
Sci
.26,
319
–20
~195
7!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:30
3J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
30°C
ofT
h~C2H
3O2!
4in
thre
eso
lven
tsa
Sol
vent
Th~
C2H
3O2!
4
~g/1
00cm
3so
lutio
n!T
h~C
2H3O
2!4
~mol
dm2
3 !T
h~C
2H3O
2!4
~g/1
00g
solv
ent!
Th~
C2H
3O2!
4
~m1
/mol
kg2
1 !b
1,2-
etha
nedi
amin
e;C 2H
8N2;
@107
-15-
3#3.
730.
084.
300.
0884
2-am
inoe
than
ol;
C 2H7N
O;
@141
-43-
5#
cc
70.8
11.
456
1,2-
etha
nedi
ol;
C 2H6O
2;@1
07-2
1-1#
cc
0.41
0.00
843
a Sol
idph
ases
wer
eno
tin
vest
igat
ed.
b Cal
cula
ted
byco
mpi
ler.
c Not
repo
rted
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
d.A
nhyd
rous
mat
eria
lsw
ere
hand
led
and
solu
tions
prep
ared
inm
oist
ure-
and
CO
2-fr
eeai
rin
agl
ove
box.
Sol
ubili
tym
easu
rem
ents
wer
eca
rrie
dou
tin
test
tube
sfit
ted
with
grou
ndgl
ass
stop
pers
seal
edw
ithD
ow-C
orni
ngsi
licon
ehi
gh-v
acuu
mgr
ease
.T
heso
lven
tsw
ere
equi
libra
ted
with
exce
ssso
lidsa
ltin
ath
erm
osta
ted
bath
for
5da
ysw
ithfr
eque
ntag
itatio
n.T
hetu
bes
wer
eth
ence
ntrif
uged
for
20m
inan
dop
ened
inth
edr
ybo
x.T
heth
oriu
mco
nten
tw
asde
term
ined
bypr
ecip
itatin
ghy
drou
sox
ide
upon
addi
tion
ofw
ater
,an
dw
eigh
ing
the
igni
ted
oxid
e.
Anh
ydro
usT
h~IV
!ac
etat
ew
asob
tain
edby
the
reac
tion
ofT
hni
trat
ew
ithac
etic
anhy
drid
e.1T
heco
mpo
sitio
nof
the
prod
uct
was
esta
blis
hed
byig
nitio
nto
ThO 2
.1,
2-et
hane
diam
ine
mon
ohyd
rate
~B.D•H
.!w
asde
hydr
ated
and
purifi
edbe
fore
use.
The
purifi
edpr
oduc
tha
da
spec
ific
cond
ucta
nce
of1.
353
102
6V
21
cm2
1at
30°C
,an
dw
asst
ored
ingl
ass
stop
pere
dfla
sks
whi
chw
ere
kept
ina
desi
ccat
orov
erso
dalim
e,M
gpe
rchl
orat
ean
dP 2O
5.A
nhyd
rous
2-am
inoe
than
olan
d1,
2-et
hane
diol
wer
eus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Co
~1!
Th
~2!
~3!
Va
T/
c 2 Th
Th
Th
Th
Th
Th
Th
a A Me
Po
for
so of an
J
4.9.
Tho
rium
Oxa
late
4.9.
1.E
valu
atio
nof
the
Th
„C
2O4…
2¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#W
ater
;H 2
O;
@773
2-18
-5#J.
Hala
,D
epar
tmen
tof
Inor
gani
cC
hem
istr
y,M
asar
ykU
nive
rsity
,61
137
Brn
o,C
zech
Rep
ublic
,F
ebru
ary
2000
Crit
ical
Eva
luat
ion:
The
rear
efiv
eva
lues
avai
labl
efo
rth
eso
lubi
lity
ofth
oriu
mox
alat
ein
wat
erof
whi
chth
ree
have
been
extr
acte
dfr
omdo
cum
ents
alin
gw
ithte
rnar
ysy
stem
s.2,3,
5A
t298
.15
K,t
heso
lubi
lity
ofT
h~C2O
4!2
has
been
repo
rted
tobe
(4.1
–4.
8)3
102
5~G
rinbe
rg,P
etrz
hak,
dE
vtee
v1 !,1.
843
102
6~L
uzhn
aya
and
Kov
alev
a2 !,an
d4.
743
102
5~K
urna
kova
and
Shu
boch
kin
3 !,al
lin
mol
kg2
1 ,an
d2.
710
27
mol
dm2
3 .4T
hese
valu
esdi
ffer
from
one
anot
her
by2
orde
rsof
mag
nitu
dean
dw
ere
obta
ined
unde
rdi
ffere
nteq
uilib
ratio
nnd
ition
s.It
seem
sth
atth
eva
lue
of2.
73
102
7m
oldm
23
~Spi
tsyn
4 !co
uld
have
resu
lted
from
rath
ersh
ort
equi
libra
tion
time
appl
ied
~6on
ly!
sinc
ein
othe
rdo
cum
ents
cons
ider
ably
long
ereq
uilib
ratio
nto
okpl
ace.
The
reas
onfo
rth
edi
scre
panc
ybe
twee
nth
eda
tain
Ref
s.nd
3,w
here
roug
hly
the
sam
eeq
uilib
ratio
ntim
eof
5–
6da
ysw
asus
ed,i
sno
tcle
ar.T
heva
lue
ofC
olan
i,5
alth
ough
obta
ined
atdi
ffere
ntpe
ratu
res,
seem
sag
ain
tobe
poin
ting
toth
eim
port
ance
ofeq
uilib
ratio
nco
nditi
ons.
Inth
isdo
cum
ent
equi
libra
tion
took
plac
efo
r3
nths
,and
the
obta
ined
solu
bilit
yis
ingo
odag
reem
entw
ithth
eda
taof
Grin
berg
and
Pet
rzha
k1
and
Kur
nako
vaan
dS
hubo
chki
n.3
Sin
cein
berg
and
Pet
rzha
k1
repo
rted
ara
nge
for
the
solu
bilit
yra
ther
than
asi
ngle
valu
eth
eev
alua
tor
reco
mm
ends
the
solu
bilit
yva
lue
ofrn
akov
aan
dS
hubo
chki
n3
beus
edas
ate
ntat
ive
valu
eat
298.
15K
.
fere
nces
:.
A.
Grin
berg
,G
.I.
Pet
rzha
k,an
dL.
I.E
vtee
v,Z
h.N
eorg
.K
him3,
204
~195
8!.
.P
.Lu
zhna
yaan
dI.
S.
Kov
alev
a,Z
h.N
eorg
.K
him
.6,
1436
~196
1!.
.S
.K
urna
kova
and
L.K
.S
hubo
chki
n,Z
h.N
eorg
.K
him
.8,
1249
~196
3!.
.I.
Spi
tsyn
,Z
h.R
uss.
Fiz
.K
him
.O
bsh.4
9,35
7~1
917!
..
Col
ani,
Com
pt.
Ren
d.156
,10
75~1
913!
;15
6,19
07~1
913!
.
548548 JIRI HALA
4.8.
Tho
rium
O-A
lkyl
carb
onod
ithio
ates
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
tetr
akis~
O-a
lkyl
carb
onod
ithio
ates!;
~xan
thog
enat
es!;T
h~O
S 2C
~CH
2!nC
H3!
4
~2!
Pot
assi
umni
trat
e;K
NO 3;
@775
7-79
-1#~3
!W
ater
;H 2
O;
@773
2-18
-5#
L.D
.S
kryl
ev,
O.
V.
Per
lova
,V
.F
.S
azon
ova,
and
C.
V.
Fel
dman
,Iz
v.V
UZ
Tsv
et.
Met
alN
o.4,
23–
8~199
0!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.0
18J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyin
wat
erof
thor
ium
xant
hoge
nate
sat
20°C
a
Sal
tT
h~O
S 2C
~CH
2!nC
H3!
4
(c1/1
06m
oldm
23 !
Th~
OS 2
C~C
H2!
CH
3!4;
@134
902-
18-4#
36.6
0
Th~
OS 2
C~C
H2!
3CH
3!4;
@134
902-
19-5#
20.6
0
Th~
OS 2
C~C
H2!
5CH
3!4;
@134
902-
20-8#
12.0
0
Th~
O2C
~CH
2!9C
H3!
4;@1
3490
2-21
-9#4.
33
a All
satu
rate
dso
lutio
nssh
owed
pHof
6.0,
cont
aine
d0.
0108
mol
dm2
3K
NO
3,an
dw
ere
ofco
lloid
alna
ture
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Pot
assi
umsa
ltsof
the
corr
espo
ndin
gxa
ntho
geni
cac
ids,
inth
efo
rmof
0.01
mol
dm2
3so
lutio
ns,
wer
ead
ded
toa
Th
~NO
3!4
solu
tion
inst
oich
iom
etric
amou
nts
requ
ired
for
the
form
atio
nof
the
corr
espo
ndin
gth
oriu
msa
lts.
Sat
urat
edso
lutio
nsw
ere
anal
yzed
for
the
thor
ium
cont
ent
neph
elom
etric
ally
.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
~2!
de an 3 co h 2a
tem
mo
Gr
Ku
Re
1A
2N
3A
4V
5M
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.9.
2.T
horiu
mO
xala
teD
ihyd
rate
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!di
hydr
ate;
Th~C
2O4!
2•2H
2O;
4041
-32-
8#A
mm
onia
;N
H 3;
@766
4-41
-7#
G.W
.Wat
t,W
.A.J
enki
ns,a
ndJ.
M.M
cCui
ston
,J.A
m.C
hem
.S
oc.7
2,22
60–
2~19
50!.
riabl
es:
Pre
pare
dby
:
K:
298
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofT
h~C
2O4!
2•2H
2Oat
25°C
was
repo
rted
tobe
0.51
gT
h~C
2O4!
2•2H
2O/1
00g
NH 3
.m
pile
rca
lcul
ated
the
solu
bilit
yto
bem15
0.01
15m
olkg
21 .
The
equi
libriu
mso
lidph
ase
was
Th
~C2O
4!2•
2H2O
;@1
4041
-32-
8#.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used.
2g
ofT
h~C
2O4!
2.2H
2Ow
ere
trea
ted
thliq
uid
NH
3fo
r3
hin
asp
ecia
lrea
ctor1
at25
°C.
The
thod
for
Th
dete
rmin
atio
nin
the
satu
rate
dso
lutio
nw
asno
tec
ified
.T
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
nfirm
edby
chem
ical
anal
ysis
.E
xces
sN
H3
from
the
tura
ted
solu
tion
was
evap
orat
ed,
the
solid
was
was
hed
and
cuum
drie
d.T
here
was
novi
sual
evid
ence
ofa
reac
tion
ofso
lidw
ithN
H 3,
and
Th~
C2O
4!2•
2H2O
was
reco
vere
dch
ange
dex
cept
for
asm
allr
eten
tion
ofN
H3.
Dih
ydra
teof
the
salt
was
obta
ined
byde
hydr
atio
nof
Th~
C2O
4!2•
6H2O
at11
0°C
.T
hela
tter
was
prep
ared
from
Th~
NO
3!4•
4H2O
~A.D
.M
acK
ayC
o.!an
dre
agen
tgr
ade
oxal
icac
id.
The
dihy
drat
ew
asan
alyz
edfo
rT
hco
nten
t:fo
und
52.3
%,
calc
ulat
edfo
rT
h~C2O
4!2•
2H2O
,52.
3%
.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1G
.W
.W
atan
dT
.E
.M
oore
,J.
Am
.C
hem
.S
oc.
70,
1197
~194
8!.
549549IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!W
ater
;H 2
O;
@773
2-18
-5#A
.A
.G
rinbe
rg,
G.
I.P
etrz
hak,
and
L.I.
Evt
eev,
Zh.
Neo
rg.
Khi
m.
3,20
4–
11~1
958!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofT
h~C
2O4!
2•6H
2Oat
25°C
inw
ater
was
repo
rted
tobe
(2.1
–2.
5)3
102
2g
salt/
kgw
ater
or(4
.1–
4.8)
310
25
mol
kg2
1 .
Add
ition
alin
form
atio
n:pH
and
mol
arco
nduc
tivity
ofth
esa
tura
ted
solu
tions
wer
e5.
9an
dap
prox
imat
ely
200
Scm
2m
ol2
1on
aver
age,
resp
ectiv
ely.
Fro
mth
isth
eau
thor
sco
nclu
ded
that
inth
esa
tura
ted
solu
tions
Th
~IV
!ox
alat
ew
asdi
ssoc
iate
dm
ainl
yto
Th
~C2O
4!21
and
C 2O
422io
ns.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.N
othi
ngsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Co
~1!
@1 ~2!
Va
T/
Co
Me
Iso
wi
me
sp co sa va the
un
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
Wat
er;
H 2O
;@7
732-
18-5#
M.
Col
ani,
Com
pt.
Ren
d.15
6,10
75–
6~1
913!
;15
6,19
07–
9~1
913!
.
riabl
es:
Pre
pare
dby
:
K:
285
–32
30w
2/m
ass%
:0
–35
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Th~
C2O
4!2
inaq
ueou
sH
Cls
olut
ions
mpe
ratu
re~°
C!
HC
l(1
00w
2/m
ass
%)
HC
l(m
2/m
olkg
21 )a
Th
~mas
s%!
Th~
C2O
4!2
(103
m1
/mol
kg2
1 )aS
olid
phas
eb
123.
20.
907
0.00
270.
1202
A
23.0
8.20
00.
072
4.03
B
29.9
11.7
30.
169.
86B
33.1
13.6
30.
3120
.1B
1526
.39.
800.
105.
86B
32.5
13.1
60.
2818
.0B
35.0
14.9
10.
6040
.2B
170
00.
001
0.04
31A
1.2
0.33
30.
002
0.08
72A
3.6
1.02
40.
0035
0.15
6A
4.6
1.32
20.
0054
0.24
4A
8.4
2.51
50.
010
0.47
1A
13.1
4.13
60.
016
0.79
9A
16.2
5.30
30.
022
1.13
A
19.8
6.77
50.
037
1.99
A
500
00.
0010
0.04
31A
4.1
1.13
70.
0058
0.26
1A
8.4
2.51
50.
016
0.75
3A
12.4
3.88
40.
033
1.62
A
16.1
5.28
60.
059
3.03
A
18.0
6.02
60.
077
4.05
A
19.9
6.82
20.
097
5.26
A
21.6
7.56
90.
133
7.32
A
21.2
7.58
80.
179.
56B
23.0
8.23
50.
2011
.3B
26.8
10.0
80.
2716
.0B
29.8
11.7
20.
4427
.2B
32.3
13.2
60.
8856
.8B
34.6
14.8
51.
5110
2B
a Cal
cula
ted
byco
mpi
ler.
b ~A!
Th~
C2O
4!2•
6H2O
,@1
6788
-62-
8#;~B
!T
h 4~C
2O4!
6Cl 4•20
H2O
,@
#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
No
deta
ilsw
ere
give
nex
cept
that
at17
°C3
mon
ths
wer
ene
cess
ary
tobr
ing
the
solu
tion
into
equi
libriu
mw
ithso
lidT
h~C2O
4!2•
6H2O
.E
xper
imen
tsat
.21
mas
s%
wer
eca
rrie
dou
tus
ing
Th
4~C
2O4!
6Cl 4•20
H2O
asth
est
artin
gso
lidph
ase.
The
com
posi
tion
ofth
ela
tter
asth
eeq
uilib
rium
solid
phas
ew
asco
nfirm
edby
chem
ical
anal
ysis
.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
550550 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
G.
Hau
ser
and
F.
Wirt
h,Z
.A
norg
.C
hem
.78
,75
–94
~191
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
810
0w2
/mas
s%:
24.8
–37
.6J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofH
Cls
olut
ions
satu
rate
dw
ithT
h~C
2O4!
2at
25°C
a
HC
l(1
00w
2/m
ass%
)T
hO2
~gkg
21
solu
tion!
Th~
C2O
4!2
~mol
kg2
1so
lutio
n!b
24.8
0.10
03.
79310
24
37.0
3.45
00.
0131
37.6
3.49
20.
0133
a Equ
ilibr
ium
solid
phas
ew
asre
port
edto
be3T
h~C
2O4!
2•T
hCl 4•
20H
2O,
@#.
b Cal
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
d1us
ed.
Exc
ess
Th~C
2O4!
2•6H
2Ow
aseq
uilib
rate
din
ath
erm
osta
ted
bath
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
rat
leas
t24
h.T
heso
lidph
ase
was
allo
wed
tose
ttle
inth
eba
th,
and
som
e60
–10
0g
ofth
esa
tura
ted
solu
tion
was
with
draw
nth
roug
ha
filte
rla
yer.
The
aliq
uot
was
evap
orat
edan
dig
nite
dto
ThO 2.
Asm
all
corr
ectio
nw
asap
plie
dfo
rth
em
ass
ofsi
licat
esdi
ssol
ved
from
glas
swar
e.T
heeq
uilib
rium
solid
phas
ew
asch
arac
teriz
edby
chem
ical
anal
ysis
:ca
lcul
ated
/foun
d~mas
s%!
for
3Th~
C2O
4!2•T
hCl 4•
20H
2O:T
hO2
47.3
7/47
.11,
Cl7
.24/
7.00
.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatin
git
with
conc
entr
ated
HC
lfr
omth
eso
lutio
nof
the
salt
inam
mon
ium
oxal
ate.
The
proc
edur
ew
asre
peat
edse
vera
ltim
esto
purif
yth
eth
oriu
mox
alat
efr
omla
ntha
nide
s.A
fter
air
dryi
ngth
epr
oduc
tco
ntai
ned,
inm
ass
%,5
0.68
ThO 2,
27.4
7C 2
O3,
and
21.6
7H 2
O.
Cal
cula
ted
for
the
hexa
hydr
ate~res
pect
ive
valu
es!:51
.21,
27.8
8,an
d20
.91.
Oxa
licac
idus
eddi
dno
tsh
owan
yre
sidu
eon
igni
tion.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~Hau
ser
and
Wirt
h1 !.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 O.
Hau
ser
and
F.
Wirt
h,Z
.A
nal.
Che
m.
47,
389
~190
8!.
Co
~1!
~2!
~3!
Va
T/
10 Te
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
activ
ityw
ithth
atof
akn
own
amou
ntof
labe
led
Th~
C2O
4!2•
6H2O
.E
stim
ated
Err
or:
Tem
pera
ture
:no
tre
port
ed.
Tho
rium
conc
entr
atio
n:pr
ecis
ion6
~1–
2!%
~aut
hor!.
Ref
eren
ces:
1 M.
Col
ani,
Com
pt.
Ren
d.156
,10
75~1
913!
;15
6,19
07~1
913!
.
4.9.
3.E
valu
atio
nof
the
Th
„C
2O4…
2¿H
NO
3¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
Feb
ruar
y20
00
Crit
ical
Eva
luat
ion:
Fou
rse
tsof
data
are
avai
labl
efo
rth
eso
lubi
lity
ofT
h~C
2O4!
2in
aque
ous
HN
O 3so
lutio
ns1
–4
ofw
hich
the
data
ofP
azuk
hinet
al.4
vebe
enex
trac
ted
from
the
stud
yof
the
quar
tern
ary
syst
emT
h~C
2O4!
2–
oxal
icac
id–
HN
O 3–
H2O
.W
hile
the
data
from
docu
men
ts1,
3,4
emto
agre
ew
ithon
ean
othe
rw
ithin
expe
rimen
tale
rror
,the
data
ofK
urna
kova
and
Shu
boch
kin
2ar
ehi
gher
bya
fact
orra
ngin
gfr
om1.
53.
5.T
oill
ustr
ate
the
situ
atio
n,th
eda
tafo
rm
2,
4m
olH
NO
3/k
gfr
omR
efs.
1–
4ha
vebe
ensu
mm
ariz
edin
agr
aphi
calf
orm
~see
Fig
.T
his
diffe
renc
ein
solu
bilit
ies
seem
sto
coin
cide
wel
lwith
the
diffe
rent
equi
libra
tion
times
used
.W
hile
Kur
nako
vaan
dS
hubo
chki
n2
edeq
uilib
ratio
ntim
eof
5–
6da
ys,
the
auth
ors
ofot
her
stud
ies
equi
libra
ted
the
syst
ems
for
afe
who
urs
only
.It
seem
sth
uslik
ely
that
eeq
uilib
rium
was
not
reac
hed
inR
efs.
1,3,
4.It
isno
tew
orth
yth
atth
esa
me
prob
lem
appe
ars
inth
ebi
nary
syst
emT
h~C
2O4!
2–
H2O
eC
ritic
alE
valu
atio
n!in
this
sect
ion.
Mor
eove
r,K
urna
kova
and
Shu
boch
kin
2us
eda
mor
ese
nsiti
vera
diom
etric
met
hod
for
the
term
inat
ion
ofth
oriu
m,
and
Bry
zgal
ovaet
al.3
repo
rted
rath
erlo
wpr
ecis
ion
for
thei
rco
lorim
etric
met
hod.
The
very
good
agre
emen
tso
me
ofth
eda
tafr
omR
ef.
3an
d4~e
.g.,
for
0.5,
1.6,
and
2.7
mol
HN
O 3/k
g!ca
nth
usbe
fort
ituou
s.T
heev
alua
tor
ther
efor
eco
mm
ends
the
data
ofK
urna
kova
and
Shu
boch
kin
2be
used
aste
ntat
ive
ones
.
FIG
.2.
Tho
rium
bix~o
xala
te!–
nitr
icac
id–
wat
ersy
stem
Ref
eren
ces:
1 V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.49,
357
~191
7!.
2 A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49~1
963!
.3 R
.V
.B
ryzg
alov
a,Y
u.M
.R
ogoz
in,
and
I.V
.C
hern
itska
ya,
Rad
iokh
imiy
a12
,28
6~1
970!
.4 E
.M
.P
azuk
hin,
E.
A.
Sm
irnov
a,A
.S
.K
rivok
hats
kii,
and
Yu.
L.P
azuk
hina
,R
adio
khim
iya
27,
606
~198
5!.
551551IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.~J.
Rus
s.P
hys.
Che
m.
Soc
.!49
,35
7–
70~1
917!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
04–
1.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
Cls
olut
ions
a
HC
l(c
2/m
oldm
23 !
ThO
2
~mg
dm2
3 !T
h~C
2O4!
2b
(105
c 1/m
oldm
23 )
0.04
0.6
0.23
0.09
1.7
0.65
0.23
4.7
1.81
0.38
72.
69
0.48
8.5
3.29
0.50
124.
61
0.64
166.
15
0.82
218.
08
1.0
249.
23
a Sol
idph
ases
not
inve
stig
ated
.B
ased
onth
eda
tape
rtai
ning
toth
era
nge
ofH
Clc
once
ntra
tion
used
~Col
ani1 !,
com
pile
ras
sum
esth
isto
beT
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#.
b Cal
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
labe
led
with
234 T
hw
aseq
uilib
rate
dw
ithth
eso
lutio
nof
the
desi
red
com
posi
tion
for6
hw
hich
was
foun
dsu
ffici
ent
for
satu
ratio
nto
bere
ache
d.A
fter
equi
libra
tion,
100
–20
0m
Lof
the
satu
rate
dso
lutio
nw
asev
apor
ated
ona
porc
elai
nedi
shan
db
activ
ityof
the
resi
due
was
mea
sure
din
anel
ectr
osco
pe.
The
amou
ntof
thor
ium
was
obta
ined
byco
mpa
ring
the
mea
sure
d
Labe
led
Th~C
2O4!
2•6H
2Ow
aspr
epar
edby
prec
ipita
tion.
An
aliq
uot
ofU
X 1(23
4 Th)
prep
arat
ion
was
adde
dto
aso
lutio
nof
Th~
NO
3!4,
and
Th~
C2O
4!2•
6H2O
was
prec
ipita
ted
byad
ding
hot
solu
tion
ofox
alic
acid
.The
prec
ipita
tew
asw
ashe
dse
vera
ltim
esw
ithho
tw
ater
.A
fter
seve
ral
deca
ntat
ions
with
cold
wat
erth
epr
ecip
itate
turn
edin
tocr
ysta
lline
form
.
Co
~1!
~2!
~3!
ha se to 2!.
us tru
~se
de of re
J
24
22
2!%
~aut
hor!.
Ref
eren
ces:
1 A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49~1
963!
.2 P
hys
ico
-Ch
em
ica
lT
ab
les,P
ubl.
Hou
seT
ech.
Lit.,
Pra
gue,
~195
3!,
Vol
.1,
p.21
3.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49–
54~1
963!
;R
uss.
J.In
org.
Che
m.8,
647
–50
~196
3!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
kg2
1 :0
–23
.74
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
NO
3so
lutio
nsa
HN
O3
2/m
ass
%)
HN
O3
~mol
kg2
1 !bH
NO
3
(m2
/mol
kg2
1 )cT
h~m
ass
%!T
h(1
04m
olkg
21 )b
Th
(104
m1
/mol
kg2
1 )
00
00.
0011
0.47
0.47
4
1.45
0.23
0.23
40.
0029
1.25
1.27
3.45
0.55
0.56
70.
0050
2.15
2.23
4.74
0.75
0.79
00.
0052
2.24
2.35
7.40
1.17
1.27
0.00
863.
694.
00
14.3
42.
282.
660.
0154
6.63
7.75
16.0
72.
553.
040.
0182
7.84
9.35
18.6
32.
963.
630.
0221
9.52
11.7
1
20.8
53.
314.
180.
0304
13.1
016
.56
27.5
24.
376.
030.
0481
20.7
228
.62
31.3
44.
977.
250.
0685
29.5
143
.04
36.8
05.
849.
250.
0981
42.2
667
.00
46.9
27.
4514
.09
0.23
8d10
2.53
194.
1
53.0
68.
4218
.13
0.48
5d20
8.9
450.
0
59.2
89.
4123
.74
1.09
3d46
7.0
1188
heeq
uilib
rium
solid
phas
ew
asT
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#,
inal
lsol
utio
ns.
olso
lute
per
kgso
lutio
n.al
cula
ted
byco
mpi
ler
usin
gde
nsiti
esof
HN
O3
solu
tions
from
Ref
.1.
hesh
arp
incr
ease
ofT
h~C2O
4!2
solu
bilit
yat
high
HN
O 3co
ncen
trat
ions
was
ascr
ibed
byth
eau
thor
sto
the
form
atio
nof
nitr
ato
and/
oritr
ato
–ox
alat
oco
mpl
exes
ofth
oriu
min
thes
eso
lutio
ns.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsw
ithex
cess
solid
wer
eag
itate
dfo
r5
–6
days
.T
heco
ncen
trat
ion
ofH
NO
3in
the
satu
rate
dso
lutio
nsw
asde
term
ined
bytit
ratio
nw
ith0.
1N
NaO
H.
Tho
rium
conc
entr
atio
nw
asde
term
ined
radi
omet
rical
ly.
Afte
rce
ntrif
ugat
ion,
five
toei
ght
drop
sof
the
satu
rate
dso
lutio
nw
ere
wei
ghed
out
onto
anas
hles
sfil
ter
for
b-c
ount
ing.
Fro
mso
lutio
nsof
dilu
teH
NO 3w
here
the
solu
bilit
yof
Th~
C2O
4!2
islo
w,
0.3
–5
gof
the
solu
tion
wer
ew
ithdr
awn
in15
sepa
rate
port
ions
with
dryi
ngaf
ter
each
addi
tion,
and
coun
ted.
Theb
activ
ityof
the
satu
rate
dso
lutio
nsw
asco
mpa
red
with
that
ofth
est
anda
rds
prep
ared
from
labe
led
Th~
C2O
4!2•
6H2O
.A
thi
ghT
h~C
2O4!
2co
ncen
trat
ions
,th
oriu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
grav
imet
rical
ly~m
etho
dno
tsp
ecifi
ed!.
The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asde
term
ined
byop
tical
mic
rosc
opy,
inso
lutio
nsco
ntai
ning
high
HN
O 3co
ncen
trat
ions
bych
emic
alan
alys
isan
dth
em
etho
dof
wet
resi
dues
.
Th~
C2O
4!2•
6H2O
was
prep
ared
from
thor
ium
nitr
ate
ofun
spec
ified
sour
cean
dpu
rity.
To
incr
ease bac
tivity
ofth
oriu
mfo
rits
subs
eque
ntra
diom
etric
dete
rmin
atio
n,ag
edU
O2~
NO
3!2
inra
dioa
ctiv
eeq
uilib
rium
with
the
thor
ium
isot
ope
UX
1~23
4 Th!
was
adde
dto
Th~N
O3!
4,an
dT
h~C
2O4!
2•6H
2Ow
aspr
ecip
itate
dfr
omho
tso
lutio
nw
itha
stoi
chio
met
ricam
ount
ofox
alic
acid
.T
hela
bele
dT
h~C2O
4!2•
6H2O
was
filte
red,
was
hed
ten
times
with
boili
ngw
ater
,an
dai
rdr
ied
for
4–
5da
ys.
Fre
shly
dist
illed
60.4
%H
NO 3
was
used
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 Ph
ysic
o-C
he
mic
al
Ta
ble
s,~P
ubl.
Hou
seT
ech.
Lite
r.,
Pra
gue,
1953
!,V
ol.
1,p.
213.
552552 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!N
itric
acid
;H
NO
3;@7
697-
37-2#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.~J.
Rus
s.P
hys.
Che
m.
Soc
.!49
,35
7–
70~1
917!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
35
0.01
6–
1.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
NO
3so
lutio
nsa
HN
O3
(c2
/mol
dm2
3 )H
NO
3
(m2
/mol
kg2
1 )b,c
ThO
2
~mg
dm2
3 !T
h~C
2O4!
2b
(105
c 1/m
oldm
23 )
0.01
60.
016
0.3
0.12
0.06
0.06
1.3
0.50
0.24
0.24
4.5
1.73
0.47
0.48
10.1
3.88
0.50
0.50
911
4.23
0.78
0.80
514
.45.
54
1.0
1.03
433
12.7
a Sol
idph
ases
noti
nves
tigat
ed.W
ithre
fere
nce
toan
othe
rst
udy
ofth
eso
lubi
lity
inth
eT
h~C
2O4!
2–
HN
O3–
H2O
syst
em,1co
mpi
ler
assu
mes
this
tobe
Th~C
2O4!
2•6H
2O,
@167
88-6
2-8#.
b Cal
cula
ted
byco
mpi
ler.
c Cal
cula
ted
byus
ing
dens
ities
ofH
NO
3so
lutio
nsfr
omR
ef.
2.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
labe
led
with
234 T
hw
aseq
uilib
rate
dw
ithth
eso
lutio
nof
the
desi
red
com
posi
tion
for6
hw
hich
was
foun
dsu
ffici
ent
for
satu
ratio
nto
bere
ache
d.A
fter
equi
libra
tion,
100
–20
0m
Lof
the
satu
rate
dso
lutio
nw
asev
apor
ated
ona
porc
elai
nedi
shan
db
activ
ityof
the
resi
due
was
mea
sure
din
anel
ectr
osco
pe.
The
amou
ntof
thor
ium
was
obta
ined
byco
mpa
ring
the
mea
sure
dac
tivity
with
that
ofa
know
nam
ount
ofla
bele
dT
h~C
O!•6H
O.
Labe
led
Th~C
2O4!
2•6H
2Ow
aspr
epar
edby
prec
ipita
tion.
An
aliq
uot
ofU
X 1(23
4 Th)
prep
arat
ion
was
adde
dto
aso
lutio
nof
Th~
NO
3!4,
and
Th~
C2O
4!2•
6H2O
was
prec
ipita
ted
byad
ding
hot
solu
tion
ofox
alic
acid
.The
prec
ipita
tew
asw
ashe
dse
vera
ltim
esw
ithho
tw
ater
.A
fter
seve
ral
deca
ntat
ions
with
cold
wat
erth
epr
ecip
itate
turn
edin
tocr
ysta
lline
form
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
prec
isio
n6
~1–
Co
~1!
~2!
~3!
Va
T/
m2
(w a T b M c C d T n
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
te,
Tho
rium
inth
efil
trat
ew
asde
term
ined
colo
rimet
rical
lyw
ithar
sena
zoIII
.3D
ata
repo
rted
are
aver
age
valu
esof
3–
4de
term
inat
ions
.
was
hing
was
repe
ated
until
the
was
hso
lutio
nco
ntai
ned
equi
vale
ntco
ncen
trat
ions
ofth
oriu
man
dox
alic
acid
.T
hepr
ecip
itate
was
then
filte
red,
was
hed
with
wat
er,
etha
nol
and
ethe
r,an
dai
rdr
ied
atro
omte
mpe
ratu
re.T
heco
mpo
sitio
nof
the
prod
uct
asfo
und
byan
alys
isw
asT
h:ox
alat
e:H
2O5
1:1
.98:
6.3.
Est
imat
edE
rror
:T
empe
ratu
re:p
reci
sion6
0.2
K~a
utho
rs!.
Tho
rium
conc
entr
atio
n:pr
ecis
ion
610
%fo
rC
Th.
1.2
310
26
mol
dm2
3an
d6
~20
–30
!%fo
rC
Th,
1.2
310
26
mol
dm2
3~a
utho
rs!.
Ref
eren
ces:
1 A.
G.
Kur
nako
vaan
dL.
K.
Sch
uboc
hkin
,Z
h.N
eorg
.K
him8,
1249
~196
3!.
2 Ph
ysic
o-c
he
mic
alT
ab
les~P
ubl.
Hou
seof
Tec
hnic
alLi
tera
ture
,P
ragu
e,19
53!,
Vol
.1,
p.21
3.3 A
.A
.N
emod
ruk
and
N.
E.
Koc
hetk
ova,
Zh.
Ana
lit.
Khi
m.
17,
330
~196
2!.
4.9.
4.E
valu
atio
nof
the
Th
„C
2O4…
2¿H
2SO
4¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#S
ulfu
ricac
id;
H 2S
O4;
@766
4-93
-9#W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
The
solu
bilit
yof
Th~
C2O
4!2
inaq
ueou
sH 2S
O4
solu
tions
has
been
repo
rted
inth
ree
docu
men
ts.
1–
3In
all
docu
men
tsm
easu
rem
ents
vebe
enpe
rfor
med
at29
8.1
K.
Ast
rict
com
paris
onis
not
poss
ible
due
todi
ffere
ntun
itsus
edfo
rth
oriu
mco
ncen
trat
ion,
i.e.,
mg
ThO
2
rkg
satu
rate
dso
lutio
n1,
2or
mg
ThO
2pe
rdm
3sa
tura
ted
solu
tion.3
Ifth
isdi
ffere
nce
isdi
sreg
arde
d,ap
prox
imat
eco
mpa
rison
can
bede
for
two
conc
entr
atio
nsof
H 2SO
4on
ly,
i.e.,
0.25
and
0.50
mol
dm23 .
For
thes
etw
oH 2S
O4
conc
entr
atio
nsth
eso
lubi
lity
of~C
2O4!
2re
port
edby
Wirt
han
dH
ause
r1,
2is
high
erth
anth
atof
Spi
tsyn2
bya
fact
orof
appr
oxim
atel
y2.
5.It
may
beof
rele
vanc
eth
atirt
han
dH
ause
r1,2
used
24h
equi
libra
tion
time
whi
leS
pits
yn3eq
uilib
rate
dth
esy
stem
sfor6
hon
ly.S
ince
deta
ilsof
actu
aleq
uilib
ratio
nhn
ique
sus
edar
eno
tava
ilabl
eit
isno
tcer
tain
tow
hate
xten
twhe
ther
the
diffe
rent
equi
libriu
mtim
esus
edco
ntrib
uted
toth
edi
ffere
nces
the
solu
bilit
ies.
How
ever
,the
data
ofW
irth
and
Hau
ser
1,2
seem
mor
elik
ely
tore
pres
entt
hetr
ueeq
uilib
rium
valu
esan
d,as
such
,sho
uld
give
npr
efer
ence
.
fere
nces
:
.W
irth,
Z.
Ano
rg.
Che
m.7
6,17
4~1
912!
.
.H
ause
ran
dF
.W
irth,
Z.
Ano
rg.
Che
m78,
75~1
912!
.
.I.
Spi
tsyn
,Z
h.R
uss.
Fiz
.K
him
.O
bsh.4
9,35
7~1
917!
.
553553IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!N
itric
acid
;H
NO
3;@7
697-
37-2#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
R.
V.
Bry
zgal
ova,
Yu.
M.
Rog
ozin
,an
dI.
V.
Che
rnits
kaya
,R
adio
khim
iya1
2,28
6–
91~1
970!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 50.
5–
2.5
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
NO
3so
lutio
nsa
HN
O3
(c2
/mol
dm2
3 )bH
NO
3
(m2
/mol
kg2
1 )cT
h~C
2O4!
2
(104
c 1/m
oldm
23 )
Ksp
d
(1021
mol
3dm
29 )
0.5
0.50
90.
61.
2
0.86
50.
890
1.4
1.9
1.0
1.03
41.
62.
0
1.5
1.57
63.
21.
2
2.0
2.14
04.
21.
4
2.5
2.71
56.
01.
1
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.W
ithre
fere
nce
toR
ef.
1co
mpi
ler
assu
mes
this
tobe
the
hexa
hydr
aT
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#.
b The
met
hod
for
the
dete
rmin
atio
nof
HN
O3
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asno
tsp
ecifi
ed.
Com
pile
ras
sum
edth
atth
eda
tare
port
edre
fer
toin
itial
acid
conc
entr
atio
n.c C
alcu
late
dby
com
pile
rus
ing
dens
ities
ofH
NO
3so
lutio
nsfr
omR
ef.
2.d T
heK
spva
lues
wer
eob
tain
edin
atw
o-st
epap
prox
imat
ion.
Firs
t,fu
lldi
ssoc
iatio
nof
Th
~C2O
4!2
was
assu
med
.B
yus
ing
theK
spso
obta
ined
(1.53
102
21m
ol3
dm2
9 )th
ein
stab
ility
cons
tant
sof
Th~C
2O4!
21an
dT
h~C
2O4!
2co
mpl
exes
wer
eca
lcul
ated
asK15
9.5
310
29
mol
dm2
3an
dK
25
2.53
102
5m
ol2
dm2
6 ,re
spec
tivel
y,an
d,in
turn
,use
dto
calc
ulat
eth
ere
fined
Ksp
valu
es.T
heav
erag
eva
lue
reco
mm
ende
dby
auth
ors
is1.
23
102
21m
ol3
dm2
9 .T
heef
fect
ofio
nic
stre
ngth
and
com
plex
ing
ofth
oriu
m~I
V!
with
nitr
ate
ion
wer
eno
tta
ken
into
acco
unt.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
20–
100
mg
ofT
h~C
2O4!
2•6H
2Ow
ere
stirr
edw
itha
rota
ryst
irrer
at20
0–
600
rpm
with
10m
Lso
lutio
nun
tileq
uilib
rium
was
reac
hed~a
few
hour
s!.E
xces
sso
lidw
asfil
tere
dof
fin
ath
erm
osta
ted
spac
eat
25°C
.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nfr
om0.
1m
oldm
23
solu
tions
ofT
h~NO
3!4
and
oxal
icac
id.T
hepr
ecip
itate
was
allo
wed
tost
and
for
1da
y,th
em
othe
rliq
uor
deca
nted
,an
dth
epr
ecip
itate
stirr
edw
ith0.
1m
oldm2
3H
NO
3fo
r5
–6
h.T
he
Co
~1!
~2!
~4!
ha pe ma
Th
W tec
in be Re
1 F 2 O 3 V
J
Exc
ess
Th~C
2O4!
2•6H
2Ow
aseq
uilib
rate
din
ath
erm
osta
ted
bath
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
rat
leas
t24
h.T
heso
lidph
ase
was
allo
wed
tose
ttle
inth
eba
th,
and
som
e60
–10
0g
ofth
esa
tura
ted
solu
tion
was
with
draw
nth
roug
ha
filte
rla
yer.
The
aliq
uot
was
evap
orat
edan
dig
nite
dto
ThO
2.A
smal
lcor
rect
ion
was
appl
ied
for
the
mas
sof
silic
ates
diss
olve
dfr
omgl
assw
are.
24
22
conc
entr
ated
HC
lfro
mth
eso
lutio
nof
the
salt
inth
eso
lutio
nof
NH
41ox
alat
e.T
hepr
oced
ure
was
repe
ated
seve
ralt
imes
topu
rify
Th
oxal
ate
from
lant
hani
des.
Afte
rai
rdr
ying
the
prod
uct
cont
aine
d~in
mas
s%!
50.6
8T
hO2,
27.4
7C 2
O3,
and
21.6
7H 2
O.
The
resp
ectiv
eca
lcul
ated
for
Th
~C2O
4!2•
6H2O
are
51.2
1,27
.88,
and
20.9
1.O
xalic
acid
used
did
noty
ield
any
resi
due
onig
nitio
n.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~Hau
ser
and
Wirt
h1 !.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 O.
Hau
ser
and
F.
Wirt
h,Z
.A
nal.
Che
m47,
389
~190
8!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#S
ulfu
ricac
id;
H 2S
O4;
@766
4-93
-9#W
ater
;H 2
O;
@773
2-18
-5#
V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.~J.
Rus
s.P
hys.
Che
m.
Soc
.!49
,35
7–
70~1
917!
.
riabl
es:
Pre
pare
dby
:
KK
:29
8/m
oldm
23 5
0.00
35–
0.59
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
2SO
4so
lutio
nsa
H2S
O4
2/m
oldm
23 )b
ThO
2
~mg
dm2
3 !T
h~C
2O4!
2c
(104
c 1/m
oldm
23 )
H2S
O4
(c2
/mol
dm2
3 )bT
hO2
~mg
dm2
3 !T
h~C
2O4!
2c
(104
c 1/m
oldm
23 )
0.00
350.
80.
031
0.24
461.
74
0.01
20.
076
0.24
553
2.01
0.01
53
0.11
40.
2555
2.08
0.03
6.9
0.26
20.
2960
2.27
0.05
120.
454
0.45
903.
41
0.10
180.
682
0.49
108
4.09
0.20
431.
630.
5912
04.
54
atur
eof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.W
ithre
fere
nce
toW
irth
1th
eco
mpi
ler
assu
mes
this
tobe
the
hexa
hydr
ate,
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#.
once
ntra
tion
give
nin
norm
ality
inth
eor
igin
aldo
cum
ent.
Rec
alcu
late
dto
mol
dm2
3by
com
pile
r.al
cula
ted
byco
mpi
ler.
ditio
nali
nfor
mat
ion:
sore
port
edw
asth
eso
lubi
lity
ofT
h~C2O
4!2
insu
lfuric
acid
solu
tions
satu
rate
dw
ithC
e2~
C2O
4!3.
The
conc
entr
atio
nof
the
latte
rw
asno
tpo
rted
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.E
xces
sT
h~C
2O4!
2•6H
2Ola
bele
dth
234 T
hw
aseq
uilib
rate
dw
ithth
eso
lutio
nof
the
desi
red
mpo
sitio
nfor
6h
whi
chw
asfo
und
suffi
cien
tfo
rsa
tura
tion
bere
ache
d.A
fter
equi
libra
tion,
100
–20
0m
Lof
the
tura
ted
solu
tion
was
evap
orat
edon
apo
rcel
aine
dish
and
bac
tivity
ofth
ere
sidu
ew
asm
easu
red
inan
elec
tros
cope
.T
heam
ount
ofth
oriu
mw
asob
tain
edby
com
parin
gth
em
easu
red
activ
ityw
ithth
atof
akn
own
amou
ntof
labe
led
Th~
C2O
4!2•
6H2O
.
Labe
led
Th~C
2O4!
2•6H
2Ow
aspr
epar
edby
prec
ipita
tion.
An
aliq
uot
ofU
X 1(23
4 Th)
prep
arat
ion
was
adde
dto
aso
lutio
nof
Th~
NO
3!O
4,an
dT
h~C
2O4!
2•6H
2Ow
aspr
ecip
itate
dby
addi
ngho
tso
lutio
nof
oxal
icac
id.
The
prec
ipita
tew
asw
ashe
dse
vera
ltim
esw
ithho
tw
ater
.A
fter
seve
rald
ecan
tatio
nsw
ithco
ldw
ater
the
prec
ipita
tetu
rned
into
crys
talli
nefo
rm.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
prec
isio
n6~1
–2!
%~a
utho
r!.
Ref
eren
ces:
1 F.
Wirt
h,Z
.A
norg
.C
hem
.76,
174
~191
2!.
554554 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!S
ulfu
ricac
id;
H 2S
O4;
@766
4-93
-9#~3
!W
ater
;H 2
O;
@773
2-18
-5#
1 F.
Wirt
h,Z
.A
norg
.C
hem
.76,
174
–20
0~19
12!.
2 O.
Hau
ser
and
F.
Wirt
h,Z
.A
norg
.C
hem
.78
,75
–94
~191
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 50.
125
–4.
225
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inH
2SO
4so
lutio
nsa
H2S
O4
(c2
/mol
dm2
3 )bT
hO2
~g/k
gso
lutio
n!T
h~C
2O4!
2
~103
mol
/kg
solu
tion!
0.12
5c0.
070.
264
0.25
c0.
140.
529
0.50
c0.
260.
983
0.50
d0.
258
0.97
7e
1.00
d0.
391.
48e
1.05
c0.
418
1.58
1.60
c0.
712.
68
2.16
d1.
14.
17e
2.45
c1.
324.
99
3.09
d1.
513
5.73
e
3.34
d1.
794
6.79
e
4.22
5d2.
473
9.37
e
a Equ
ilibr
ium
solid
phas
eT
h~C2O
4!2•
6H2O
,@1
6788
-62-
8#,in
alls
atur
ated
solu
tions
.b C
once
ntra
tion
ofH 2S
O4
repo
rted
inno
rmal
ityin
the
orig
inal
docu
men
ts.
Rec
alcu
late
dto
mol
dm2
3by
com
pile
r.T
heda
tare
fer
toth
ein
itial
acid
conc
entr
atio
n.c D
ata
from
orig
inal
docu
men
t.2
d Dat
afr
omor
igin
aldo
cum
ent.1
e Cal
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dac
cord
ing
toH
ause
ran
dW
irth
1w
asus
ed.
Th~
CO
!•6H
Ow
aspr
epar
edby
prec
ipita
ting
itw
ith
Co
~1!
~2!
~3!
Va
T/
c 2 (c a N T b C c C Ad
Al
re Me
Iso
wi
co to sa
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4)2
;@2
040-
52-0#
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#W
ater
;H 2
O;
@773
2-18
-5#
A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49–
54;
Rus
s.J.
Inor
g.C
hem
.8,
647
–50
~196
3!.
riabl
es:
Pre
pare
dby
:
K:
298
mol
kg2
15
0–
1.29
6J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4)2
inC
2H2O
4so
lutio
ns
C2H
2O4
00w
2/m
ass
%)
C2H
2O4
~mol
kg2
1 !aC
2H2O
4
(m2
/mol
kg2
1 )bT
h~m
gkg
21 !c
Th
(104
mol
kg2
1 )aT
h(m
1/1
04m
olkg
21 )
00
011
0.47
4e0.
474f
0.35
0.03
90.
039
12d0.
517
0.51
9f
2.39
0.26
50.
272
150.
646
0.66
2f
3.50
0.38
90.
403
170.
732
0.75
9f
4.85
0.53
90.
566
180.
775
0.81
5f
10.4
51.
161
1.29
618
0.77
50.
866
g
olpe
rkg
solu
tion.
alcu
late
dby
com
pile
r.ili
gram
spe
rkg
solu
tion.
heva
lue
of22
mg
kg21
solu
tion
give
nin
the
orig
inal
docu
men
tis
obvi
ousl
ya
mis
prin
t,as
follo
ws
from
the
auth
ors’
corr
espo
ndin
gol
kg2
1so
lutio
nva
lue.
ecal
cula
ted
byco
mpi
ler;
the
auth
ors
repo
rted
0.45
43
102
4m
olkg
21
solu
tion.
quili
briu
mso
lidph
ase
was
Th~C
2O4!
2•6H
2O,
@167
88-6
2-8#.
quili
briu
mso
lidph
ases
wer
eT
h~C2O
4!2•
6H2O
,@1
6788
-62-
8#an
dC 2
H2O
4•2H
2O,
@615
3-56
-6#.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
with
exce
ssso
lidw
ere
itate
dfo
r7
days
.T
heco
ncen
trat
ion
ofC
2H2O
4in
the
tura
ted
solu
tions
was
dete
rmin
edby
titra
tion
with
0.05
NnO
4.T
horiu
mco
ncen
trat
ion
was
dete
rmin
eddi
omet
rical
lyby
bco
untin
g.A
fter
cent
rifug
atio
n,4
–5
gof
satu
rate
dso
lutio
nw
ere
wei
ghed
out
inse
vera
ladd
ition
son
toan
ashl
ess
filte
rw
ithdr
ying
afte
rea
chad
ditio
n.T
hebac
tivity
ofth
esa
tura
ted
solu
tions
was
com
pare
dw
ithth
ose
ofth
est
anda
rds
prep
ared
from
labe
led
Th
~C2O
4!2•
6H2O
.T
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
dete
rmin
edby
optic
alm
icro
scop
y.
Th~
C2O
4!2•
6H2O
was
prep
ared
from
thor
ium
nitr
ate
ofun
spec
ified
sour
cean
dpu
rity.
To
incr
ease bac
tivity
ofth
oriu
mfo
rits
subs
eque
ntra
diom
etric
dete
rmin
atio
n,ag
edU
O2~
NO
3!2
inra
dioa
ctiv
eeq
uilib
rium
with
the
thor
ium
isot
ope
UX
1~23
4 Th)
was
adde
dto
Th~N
O3!
4,an
dT
h~C
2O4!
2•6H
2Ow
aspr
ecip
itate
dfr
omho
tso
lutio
nw
itha
stoi
chio
met
ricam
ount
ofox
alic
acid
.T
hela
bele
dT
h~C2O
4!2•
6H2O
was
filte
red,
was
hed
ten
times
with
boili
ngw
ater
and
air
drie
dfo
r4
–5
days
.O
xalic
acid~c.p
.!w
asre
crys
talli
zed
and
air
drie
d.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
555555IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4)2
;@2
040-
52-0#
~2!
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#~3
!W
ater
;H 2
O;
@773
2-18
-5#
M.
Col
ani,
Com
pt.
Ren
d.,15
6,10
75–
6~19
13!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:32
310
0w2
/mas
s%5
1.7
–23
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
50°C
ofT
h~C2O
4!2
inox
alic
acid
solu
tionsa
C2H
2O4
(100
w2
/mas
s%
)C
2H2O
4
(m2
/mol
kg2
1 )aT
h~m
ass
%!T
h~C
2O4!
2
(105
m1
/mol
kg2
1 )b
1.7
0.19
20.
0002
0.87
6
6.5
0.77
20.
0007
3.23
9.3
1.14
0.00
14.
75
23.0
3.32
0.00
316
.8
a Equ
ilibr
ium
solid
phas
ew
asT
h~C2O
4!2•
6H2O
,@1
6788
-62-
8#,in
alls
olut
ions
.b C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.N
othi
ngsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Co
~1!
~2!
~3!
Va
T/
m2
(1 a M b C c M d T m e R f E g E Me
Iso
ag sa KM
ra the
J
filte
rpa
pers
,an
dai
rdr
ied.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4)2
;@2
040-
52-0#
Pot
assi
umox
alat
e;K 2C
2O4;
@583
-52-
8#W
ater
;H 2
O;
@773
2-18
-5#
N.P
.Luz
hnay
aan
dI.
S.K
oval
eva,
Zh.
Neo
rg,K
him
.6,
1436
–9
~196
1!;
Rus
s.J.
Inor
g.C
hem
.6,73
6–
8~1
961!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
kg2
1 :0
–2.
69J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofK 2
C2O
4so
lutio
nssa
tura
ted
with
Th~C
2O4)
2at
25°C
K2C
2O4
2/m
ass
%)
K2C
2O4
(m2
/mol
kg2
1 )aT
h~C
2O4)
2
(w1
/mas
s%
)T
h~C
2O4)
2
(m1
/mol
kg2
3 )D
ensi
ty~g
cm2
3 !S
olid
phas
eb
00
7.53
102
51.
843
102
6—
A
0.96
0.05
860.
560.
0139
1.00
88A
0.98
0.60
00.
720.
0179
1.01
07A
1.85
0.15
51.
530.
0388
1.01
5A
2.90
0.18
31.
710.
0439
1.03
7A1B
3.19
0.20
21.
700.
0438
1.03
6A1B
3.19
0.20
21.
850.
0477
1.03
7A1B
6.58
0.43
11.
650.
0441
1.05
9B
9.32
0.63
21.
970.
0544
1.08
5B
14.2
21.
028
2.58
0.07
601.
132
B
28.2
22.
555.
100.
187
1.28
4B
29.3
72.
695.
060.
189
1.28
8B1C
29.3
22.
695.
110.
191
1.28
8B1C
27.9
02.
463.
730.
137
1.24
6C
27.4
12.
311.
160.
0398
1.23
2C
27.2
32.
25—
—1.
214
C
alcu
late
dby
com
pile
r.!T
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#;
~B!
K4T
h~C
2O4!
4•4H
2O,
@#;
~C!
K2C
2O4•
H2O
,@6
487-
48-5#
.
ditio
nalI
nfor
mat
ion:
eso
lubi
lity
isot
herm
ofth
eK 2C
2O4–
Th~
C2O
4!2–
H2O
syst
emsh
owed
thre
ebr
anch
esco
rres
pond
ing
toth
ecr
ysta
lliza
tion
of~C
2O4!
2•6H
2O,
K4T
h~C
2O4!
4•4H
2O,
and
K 2C
2O4•
H2O
.T
here
wer
etw
ote
rnar
ypo
ints
onth
eis
othe
rm:
the
euto
nic
poin
tat
29.3
5ss
%K 2
C2O
4an
d5.
08m
ass
%T
h~C2O
4!2,
and
the
tran
sitio
npo
int
at3.
09m
ass
%K
2C2O
4an
d1.
75m
ass
%T
h~C2O
4!2.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsw
ithex
cess
solid
wer
est
irred
ina
ther
mos
tate
dve
ssel
at25
°Cfo
r2
days
whi
chw
asfo
und
suffi
cien
tto
reac
heq
uilib
rium
.S
ampl
esfo
ran
alys
isw
ere
take
naf
ter
3da
ys.
Inth
esa
tura
ted
solu
tions
and
solid
phas
es,
pota
ssiu
mw
asde
term
ined
grav
imet
rical
lyas
K2S
O4
orK
3Co~
NO
2!6,
thor
ium
grav
imet
rical
lyas
ThO 2
,an
dox
alat
etit
rimet
rical
lyw
ithst
anda
rdK
MnO
4so
lutio
n.T
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
also
dete
rmin
edby
the
met
hod
ofw
etre
sidu
es,
and
the
phas
esw
ere
also
char
acte
rized
byx-
ray
diffr
actio
nan
dth
erm
alan
alys
is.
Tw
ice
recr
ysta
llize
dpo
tass
ium
and
thor
ium
oxal
ates
wer
eus
ed.
No
othe
rde
tails
wer
ere
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
556556 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!S
odiu
mox
alat
e;N
a 2C2O
4;@6
2-76
-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
H.
T.
S.
Brit
ton
and
M.
E.
D.
Jarr
ett,
J.C
hem
.S
oc.,
1494
–5
~193
6!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
01–
0.27
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofN
a 2C2O
4so
lutio
nssa
tura
ted
with
Th~C
2O4!
2at
25°C
Na 2
C2O
4
(c2
/mol
dm2
3 )T
h~C
2O4!
2
(c1
/mol
dm2
3 )S
olid
phas
eaN
a 2C
2O4
(c2
/mol
dm2
3 )T
h~C
2O4!
2
(c1
/mol
dm2
3 )S
olid
phas
ea
0.01
002
0.00
0901
A0.
2281
0.03
920
B
0.02
005
0.00
2762
A0.
2879
0.03
852
B
0.03
844
0.00
9055
A0.
3257
0.04
543
B
0.04
839
0.01
338
A0.
3184
0.03
900
B1
C
0.05
520
0.01
550
A0.
3110
0.03
490
C
0.07
554
0.02
398
A0.
3022
0.03
036
C
0.09
158
0.03
051
A0.
2793
0.01
166
C
0.14
080.
0463
4A
0.26
720.
0036
1C
0.16
790.
0512
8A1
B0.
2676
0C
0.19
450.
0442
0B
a ~A!
Th~
C2O
4!2•
6H2O
,@1
6788
-62-
8#;~B
!N
a 4T
h~C
2O4!
4•6H
2O,
@#;
~C!
Na 2
C2O
4@6
2-76
-0#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Sui
tabl
em
ixtu
res
ofso
lutio
nsof
each
oxal
ate
wer
eal
low
edto
com
eto
equi
libriu
min
ath
erm
osta
ted
bath
whi
chto
okab
out
3w
eeks
.T
heco
nten
tof
oxal
ate
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
titra
tion
with
KM
nO4
solu
tion,
the
cont
ent
ofth
oriu
mw
asde
term
ined
grav
imet
rical
lyas
thor
ium
oxal
ate
prec
ipita
ted
from
1to
2m
oldm
23
HC
lsol
utio
ns.
The
solid
phas
esw
ere
anal
yzed
afte
rbe
ing
filte
red,
free
dfr
omad
herin
gliq
uid
bypr
essu
rebe
twee
n
Th~
C2O
4!2•
6H2O
was
obta
ined
bypr
ecip
itatin
gth
oriu
mch
lorid
eso
lutio
nw
ithox
alic
acid
.Ana
lysi
s~mas
s%!
:ThO
2fo
und
51.2
0,ca
lcul
ated
51.1
6.N
a 2C2O
4w
asof
antir
eflec
tion~
A.
R.!
qual
ity.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Co
~1!
~2!
~3!
Va
T/
m2
(w a C b ~A Ad
Th
Th
ma
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Th~
C2O
4!2
was
foun
dto
fitth
eeq
uatio
n:
log
CT
h50.
893
log @
C2O
422#2
0.85
2.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
was
equi
libra
ted
inth
erm
osta
ted
vess
els
for
6h
whi
chw
asfo
und
suffi
cien
tto
reac
heq
uilib
rium
.T
heeq
uilib
rium
conc
entr
atio
nof
oxal
ate
ion
inth
eso
lutio
nsw
asva
ried
byva
ryin
gei
ther
acid
ityat
cons
tant
oxal
ate
conc
entr
atio
n,or
tota
loxa
late
conc
entr
atio
nat
afix
edac
idity
.A
fter
equi
libra
tion
the
satu
rate
dso
lutio
nsw
ere
cent
rifug
edan
dth
eco
ncen
trat
ion
ofth
oriu
mw
asde
term
ined
colo
rimet
rical
lyw
ithar
sena
zoIII
.2
The
met
hods
ofpH
mea
sure
men
tan
dof
the
dete
rmin
atio
nof
tota
lequ
ilibr
ium
oxal
ate
conc
entr
atio
nw
ere
not
spec
ified
.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nac
cord
ing
toR
abch
ikov
and
Gol
brai
kh.
3
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.V
.Ste
pano
van
dE
.M.P
azuk
hin,
Zh.
Neo
rg.K
him
.15
,148
3~1
970!
.2 S
.B
.S
avvi
n,A
rse
na
zoII
I~A
tom
izda
t,M
osco
w,
1966!
~inR
ussi
an!,
p.10
7.3 D
.I.
Rab
chik
ovan
dE
.K
.G
olbr
aikh
,An
aly
tica
lC
he
mis
try
of
Th
oriu
m,
~Pub
l.H
ouse
Aca
d.S
ci.
US
SR
,M
osco
w,
1960
!~in
Rus
sian
!,p.
33.
4.9.
5.E
valu
atio
nof
the
Th
„C
2O4…
2¿„N
H4…
2C2O
4¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
Feb
ruar
y20
00
Crit
ical
Eva
luat
ion:
Alth
ough
this
syst
emha
sbe
enst
udie
din
five
docu
men
tsth
ere
seem
sto
bem
uch
unce
rtai
nty
inbo
thth
eso
lubi
lity
ofT
h~C
2O4!
2in
mon
ium
oxal
ate
solu
tions
and
inth
ena
ture
ofth
eeq
uilib
rium
solid
phas
es.
Intw
ost
udie
s1,
2w
here
the
resu
ltsw
ere
repo
rted
inld
m2
3un
its,
the~
NH
4!2C
2O4
conc
entr
atio
nra
nge
cove
red
was
63
102
4–
5310
22,1
and
0.02
5–
0.1
mol
dm23 .2
Ifth
edi
ffere
nce
inpe
ratu
re,
i.e.,
298.
1K
inR
ef.
1an
d29
3.1
Kin
Ref
.2,
isne
glec
ted
then
the
solu
bilit
yof
Th
~C2O
4!2
can
beco
mpa
red
only
attw
oH
4!2C
2O4
conc
entr
atio
ns:
for
0.05
mol
dm23
~NH
4!2C
2O4
the
solu
bilit
yof
Th~
C2O
4!2
was
repo
rted
tobe
0.01
22
and
0.03
85ld
m2
3 ,1w
hile
for
0.02
5m
oldm
23
~NH
4!2C
2O4
the
solu
bilit
ies
wer
e0.
05–
0.08
32
and
0.01
71m
oldm
3 .Apa
rtfr
omth
edi
scre
panc
yin
lubi
litie
s,th
ew
ork
ofP
azuk
hine
ta
l.2in
dica
tes
that
the
solu
bilit
yof
Th~C
2O4!
2in
~NH
4!2C
2O4
solu
tions
ispH
depe
nden
tsi
nce
ange
sin
pHaf
fect
the
equi
libriu
mox
alat
eio
nco
ncen
trat
ion.
InR
efs.
1an
d2
equi
libra
tion
time
of6
was
used
.In
Ref
s.3
and
4th
ere
sults
wer
ere
port
edin
mas
s%
orm
olpe
rkg
satu
rate
dso
lutio
nso
that
the
data
coul
dbe
reca
lcul
ated
tola
litie
s.T
hese
two
stud
ies
agre
ein
that
equi
libriu
min
the
Th
~C2O
4!2–
~NH
4!2C
2O4–
H2O
syst
emis
atta
ined
very
slow
lyso
that
uilib
rium
times
ofse
vera
lwee
ksw
ere
need
ed.J
ames
et
al.3
repo
rted
that
,in
orde
rto
avoi
dm
etas
tabl
esy
stem
s,eq
uilib
ratio
nof
seve
ral
nths
was
nece
ssar
yin
the
vici
nity
oftr
ansi
tion
poin
ts.
Mea
ning
ful
com
paris
onw
hich
wou
ldre
veal
serio
usdi
scre
panc
ies
can
berf
orm
edfo
r~NH
4!2C
2O4
conc
entr
atio
nsof
the
orde
rof
1022
mol
kg2
1 .F
or0.
039
–0.
064
mol
kg21
~NH
4!2C
2O4,
Jam
ese
ta
l.3re
port
edso
lubi
lity
ofT
h~C
2O4!
2to
rang
efr
om0.
0049
to0.
0086
mol
kg21
whi
chne
glec
ting
diffe
rent
conc
entr
atio
nun
its,i
sco
nsid
erab
lylo
wer
nar
eth
ere
spec
tive
data
inR
efs.
1an
d2.
On
the
cont
rary
,H
ause
ran
dW
irth
4re
port
edth
eso
lubi
lity
ofT
h~C2O
4!2
tobe
0.01
22an
d21
4m
olkg
21
at0.
04an
d0.
09m
olkg2
1~N
H4!
2C2O
4w
hich
iscl
oser
toth
eda
tain
Ref
s.1
and
2.C
ontr
over
syse
ems
toex
ist
also
asas
the
natu
reof
the
solid
phas
esis
conc
erne
d.W
hile
Paz
ukhi
ne
ta
l.2re
port
edth
eso
lidph
ase
tobe
Th
~C2O
4!2•
6H2O
,H
ause
ran
dirt
h4
repo
rted
~NH
4!2T
h 2~C
2O4!
5•7H
2Oto
exis
tin
this
syst
em.
The
rese
ems
tobe
are
lativ
ely
good
agre
emen
tof
solu
bilit
yda
taat
H4!
2C2O
4co
ncen
trat
ions
abov
e0.
4m
olkg2
1 .3,4
How
ever
,di
ffere
ntso
lidph
ases
wer
eid
entifi
edin
this
regi
on.
Whi
leH
ause
ran
dirt
h4re
port
ed~N
H4!
2Th~
C2O
4!3•
3H2O
,Ja
mes
et
al.3
repo
rted
thor
ium
oxal
ate
ofun
spec
ified
com
posi
tion
and
H4!
2Th 2
~C2O
4!5•
2H2O
.P
hase
diag
ram
ofth
eT
h~C
2O4!
2–
~NH
4!2C
2O4–
H2O
syst
emw
asst
udie
dby
Cla
udelet
al.5
who
,ho
wev
er,
port
edth
eir
data
ingr
aphi
calf
orm
only
.T
hus,
due
todi
scre
panc
ies
inth
ere
quire
men
tsfo
req
uilib
ratio
ntim
ene
cess
ary
tore
ach
true
equi
libriu
m,
toth
eim
port
ance
ofpH
ofui
libriu
mso
lutio
ns,
and
todi
scre
panc
ies
inth
ena
ture
ofeq
uilib
rium
solid
phas
es,
none
ofth
ere
port
edse
tsof
data
can
begi
ven
efer
ence
and
itse
ems
that
the
syst
emw
ould
need
ath
orou
ghre
inve
stig
atio
n.
fere
nces
:
.I.
Spi
tsyn
,Z
h.R
uss.
Fiz
.K
him
.O
bsh.4
9,35
7~1
917!
.
.M
.P
azuk
hin,
E.
A.
Sm
irnov
a,A
.S
.K
rivok
hats
kii,
Yu.
L.P
azuk
hina
,an
dS
.M
.K
oche
rgin
,R
adio
khim
iya
27,
606
~198
5!.
.Ja
mes
,C
.F
.W
hitte
mor
e,an
dH
.C
.H
olde
n,J.
Am
.C
hem
.S
oc.
36,
1853
~191
4!.
.H
ause
ran
dF
.W
irth,
Z.
Ano
rg.
Che
m.
78,
75~1
912!
.5 B
.C
laud
el,
G.
Lang
,an
dA
.N
avar
ro,
Bul
l.S
oc.
Chi
m.
Fra
nce
2094
~196
6!.
557557IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4)2
;@2
040-
52-0#
~2!
Pot
assi
umox
alat
e;K 2C
2O4;
@583
-52-
8#~3
!W
ater
;H 2
O;
@773
2-18
-5#
E.
M.
Paz
ukhi
n,E
.A
.S
mirn
ova,
A.
S.
Kriv
okha
tski
i,Y
u.L.
Paz
ukhi
na,
and
S.
M.
Koc
herg
in,
Rad
iokh
imiy
a,27,
606
–11
~198
5!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3E
quili
briu
mox
alat
eio
nco
ncen
trat
ion/
mol
dm23 :
0.11
4–
0.29
8J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofT
h~C2O
4!2
inK
2C2O
4so
lutio
nsa
K2C
2O4b
(c2
/mol
dm2
3 )C
2O
422
c
~mol
dm2
3 !pH
@C2O
422#d
~mol
dm2
3 !T
h~C
2O4!
2
~mol
dm2
3 !
0.20
0.21
36.
120.
212
0.02
89
0.20
0.21
56.
060.
214
0.03
23
0.39
40.
298
6.25
0.29
80.
0463
0.09
30.
134
4.54
0.11
60.
0212
0.09
30.
129
4.61
0.11
40.
0191
0.2
0.21
36.
120.
212
0.02
89
0.2
0.21
56.
060.
214
0.03
23
0.4
0.27
66.
150.
275
0.03
27
0.4
0.29
86.
250.
298
0.04
63
0.1
0.13
14.
540.
116
0.02
12
0.1
0.12
95.
610.
114
0.01
91
0.1
0.11
85.
960.
117
0.02
80
0.1
0.12
25.
680.
121
0.03
12
0.1
0.12
255.
840.
122
0.02
67
0.1
0.11
76.
140.
117
0.02
62
a Sol
idph
ases
wer
eno
tin
vest
igat
ed.
Itw
asm
entio
ned,
how
ever
,th
atT
h~C
2O4!
2•6H
2Odi
dno
tun
derg
oan
ych
ange
durin
geq
uilib
ratio
n.b In
itial
conc
entr
atio
n.c E
quili
briu
mto
talo
xala
teio
nco
ncen
trat
ion.
d Equ
ilibr
ium
conc
entr
atio
nof
the
C 2O422
ion
calc
ulat
edby
auth
ors
from
tota
lox
alat
eco
ncen
trat
ion
and
the
mea
sure
dpH
byus
ing
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
51.
053
102
1an
dK
a25
1.88
310
25.1
Add
ition
alIn
form
atio
n:In
the
rang
eof
equi
libriu
mox
alat
eio
nco
ncen
trat
ion
cove
red
inth
isst
udy
ofth
eT
h~C
2O4!
2–
K2C
2O4–
H2O
syst
em,
the
solu
bilit
yof
Co
~1!
~2!
~3!
am mo
tem
~N mo
so ch mo
eq mo
pe the
tha
0.0
far
W ~N W ~N re eq pr Re
1 V 2 E 3 C 4 O
J
1.47
12.
5014
8.1
0.56
00.
951
C
1.48
02.
5214
8.9
0.56
30.
960
C
a Mol
per
kgso
lutio
n.b C
alcu
late
dby
com
pile
r.c A
:T
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#;
B:
~NH
4!2T
h 2~C
2O4!
5•7H
2O,
@#;
C:~
NH
4!2T
h~C
2O4!
3•3H
2O,
@#.
d Not
repo
rted
.e T
hese
two
mea
sure
men
tsw
ere
repo
rted
tosh
owth
atbo
thw
ays
ofap
proa
chin
geq
uilib
rium
yiel
ded
iden
tical
resu
lts.
f Dat
aob
tain
edby
prol
onge
deq
uilib
ratio
nof
Th
~C2O
4!2•
6H2O
insu
cha
way
that
the
supe
rnat
ant
solu
tion
was
repe
ated
lyre
plac
edby
fres
hpo
rtio
nsin
orde
rto
elim
inat
eth
ein
fluen
ceof
the
decr
ease
of~N
H4!
2C2O
4co
ncen
trat
ion
inth
eso
lutio
ndu
eto
the
form
atio
nof
the
com
plex
solid
phas
e.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
ince
the
diss
olut
ion
ofth
oriu
mal
ate
indi
lute
solu
tions
ofam
mon
ium
oxal
ate
isa
very
slow
oces
s,th
esy
stem
sin
the
first
thre
ese
ries
ofm
easu
rem
ents
eab
ove!w
ere
prep
ared
bydi
lutin
gso
lutio
nsof
the
4–
Th
–ox
alat
eco
mpl
exw
ithth
ere
quire
dam
ount
ofw
ater
.lu
tions
with
the
prec
ipita
ted
solid
phas
ew
ere
allo
wed
tond
for
3w
eeks
with
freq
uent
shak
ing.
Inth
efo
urth
serie
s,ce
ssT
h~C2O
4!2•
6H2O
was
equi
libra
ted
for
seve
rald
ays
with
mon
ium
oxal
ate
solu
tions
pres
atur
ated
with
~C2O
4!2•
6H2O
,an
din
the
pres
ence
ofso
lid~NH
4!2C
2O4
rodu
ced
toth
esy
stem
ina
silk
bag
imm
erse
din
toth
elu
tion.
As
inH
ause
ran
dW
irth,1
som
e60
–10
0g
ofth
etu
rate
dso
lutio
nw
asw
ithdr
awn
thro
ugh
afil
ter
laye
r,ig
hed,
evap
orat
edan
dig
nite
d.A
smal
lcor
rect
ion
for
icat
esdi
ssol
ved
from
glas
swar
ew
asap
plie
d.S
olid
phas
esre
iden
tified
bych
emic
alan
alys
isan
dop
tical
mic
rosc
opy.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nfr
oma
solu
tion
ofth
oriu
mox
alat
ein
conc
entr
ated~
NH
4!2C
2O4
solu
tion
byac
tion
ofco
ncen
trat
edH
Cl.
The
prec
ipita
tion
proc
edur
ew
asre
peat
edse
vera
ltim
esto
purif
yth
oriu
mox
alat
efr
omla
ntha
nide
s.A
fter
air
dryi
ngth
epr
oduc
tco
ntai
ned
~inm
ass
%!50
.86
ThO
2,27
.47
C 2O
3,an
d21
.67
H 2O
.T
here
spec
tive
calc
ulat
edva
lues
for
Th~C
2O4!
2•6H
2Oar
e51
.21,
27.8
8an
d20
.91.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors
inR
ef.
1!.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 O.
Hau
ser
and
F.
Wirt
h,Z
.A
nal.
Che
m.
47,
389
~190
8!.
558558 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
O.
Hau
ser
and
F.
Wirt
h,Z
.A
norg
.C
hem
.78
,75
–94
~191
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
m2
/mol
kg2
1:0
.000
33–
2.52
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
of~N
H4!
2C2O
4so
lutio
nssa
tura
ted
with
Th~C
2O4!
2at
25°C
~NH
4!2C
2O4
~mol
kg2
1 !a~N
H4!
2C2O
4
(m2
/mol
kg2
1 )bT
hO2
~gkg
21 !a
Th~
C2O
4!2
~mol
kg2
1 !aT
h~C
2O4!
2
(m1
/mol
kg2
1 !b
Sol
idph
asec
0.00
033
0.00
033
d0.
000
050
0.00
005
0A
0.00
044
0.00
044
d0.
000
081
0.00
008
1A
0.00
072
0.00
072
0.03
20.
000
120
0.00
012
0A
0.00
109
0.00
109
0.05
30.
000
200
0.00
020
0A
0.00
120
0.00
120
0.05
50.
000
208
0.00
020
8A
0.00
130
0.00
130
0.05
70.
000
220
0.00
022
0A
0.00
148
0.00
148
0.06
60.
000
250
0.00
025
0A
0.00
153
0.00
153
d0.
000
260
0.00
026
0A
0.00
230.
0023
0.1
0.00
038
0.00
038
B
0.04
10.
0414
3.2
0.01
210.
0122
B
0.09
00.
0918
5.55
40.
0210
0.02
14B
0.14
50.
150
10.1
040.
0382
0.03
95B
0.22
50.
237
15.8
440.
0599
0.06
32B
0.25
f0.
265
17.6
00.
0665
0.07
06B
0.25
f0.
265
17.7
50.
0670
0.07
12B
0.30
120.
326
25.1
280.
0950
0.10
3C
0.37
000.
409
31.8
200.
1203
0.13
3C
0.60
12e
0.71
151
.577
0.19
500.
231
C
0.60
1e0.
711
51.5
70.
195
0.23
1C
0.88
01.
142
78.1
70.
295
0.38
3C
1.18
11.
739
112.
90.
427
0.62
9C
1.42
02.
3514
2.8
0.54
00.
895
C
Me
Iso
ox pr ~se
NH
So
sta
ex am Th
int
so sa we
sil
we
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Cal
cula
ted
byco
mpi
ler.
b A:
auth
ors
desc
ribed
this
solid
phas
eas
thor
ium
oxal
ate
with
out
repo
rtin
gon
the
num
ber
ofm
olec
ules
ofw
ater
ofcr
ysta
lliza
tion;
B:
2Th~
C2O
4!2.~
NH
4!2C
2O4•
2H2O
,@
#.c T
heau
thor
sre
port
thes
epo
ints
tobe
tran
sitio
npo
ints
,an
das
sum
edth
atw
ithin
the
rang
eof
thes
eco
mpo
sitio
nsth
eeq
uilib
rium
solid
phas
ew
as2T
h~C2O
4!2•
~NH
4!2C
2O4•
7H2O
repo
rted
inB
raun
er.
1
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Mix
ture
sco
ntai
ning
wat
eran
dde
sire
dam
ount
sof
thor
ium
and
amm
oniu
mox
alat
esw
ere
rota
ted
inbo
ttles
for
seve
ralw
eeks
ina
ther
mos
tate
dba
than
dal
low
edto
settl
eat
the
sam
ete
mpe
ratu
re.
Inth
evi
cini
tyof
tran
sitio
npo
ints
itw
asne
cess
ary
toeq
uilib
rate
the
mix
ture
sfo
rse
vera
lmon
ths
toav
oid
met
asta
ble
syst
ems.
Inth
ecl
ear
satu
rate
dso
lutio
ns,
thor
ium
was
dete
rmin
edgr
avim
etric
ally
byev
apor
atin
ga
wei
ghed
aliq
uot
ina
plat
inum
dish
and
igni
ting
the
resi
due
toT
hO2.
Oxa
late
cont
ent
was
dete
rmin
edtit
rimet
rical
lyag
ains
tst
anda
rdK
MnO 4
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 J.B
raun
er,
J.C
hem
.S
oc.
73,
951
~189
8!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
Wat
er;
H 2O
;@7
732-
18-5#
V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.~J.
Rus
s.P
hys.
Che
m.
Soc
.!49
,35
7–
70~1
917!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
0006
–0.
05J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
in~N
H4!
2C2O
4so
lutio
nsa
~NH
4!2C
2O4
c 2/m
oldm
23 !
ThO
2
~mg
dm2
3 !T
hb
(104
mol
dm2
3 )
0.00
062.
30.
088
0.00
104
0.15
4
0.00
2510
0.38
5
0.00
540
1.54
0.00
7570
2.69
0.01
010
03.
85
0.01
518
06.
92
0.02
034
013
.1
0.02
545
017
.3
0.03
060
023
.1
0.05
010
0038
.5
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.E
xces
sT
h~C
2O4!
2•6H
2Ola
bele
dth
234 T
hw
aseq
uilib
rate
dw
ithth
eso
lutio
nof
the
desi
red
mpo
sitio
nfor
6h
whi
chw
asfo
und
suffi
cien
tfo
rsa
tura
tion
bere
ache
d.A
fter
equi
libra
tion,
100
–20
0m
Lof
the
tura
ted
solu
tion
was
evap
orat
edon
apo
rcel
aine
dish
and
btiv
ityof
the
resi
due
was
mea
sure
din
anel
ectr
osco
pe.
The
amou
ntof
thor
ium
was
obta
ined
byco
mpa
ring
the
mea
sure
dac
tivity
with
that
ofa
know
nam
ount
ofla
bele
dT
h~C
2O4!
2•6H
2O.
Labe
led
Th~C
2O4!
2•6H
2Ow
aspr
epar
edby
prec
ipita
tion.
An
aliq
uot
ofU
X 1(23
4 Th)
prep
arat
ion
was
adde
dto
aso
lutio
nof
Th~
NO
3!4,
and
Th~
C2O
4!2•
6H2O
was
prec
ipita
ted
byad
ding
hot
solu
tion
ofox
alic
acid
.The
prec
ipita
tew
asw
ashe
dse
vera
ltim
esw
ithho
tw
ater
.A
fter
seve
ral
deca
ntat
ions
with
cold
wat
erth
epr
ecip
itate
turn
edin
tocr
ysta
lline
form
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Tho
rium
conc
entr
atio
n:pr
ecis
ion6
~1–
2!%
~aut
hor!.
559559IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
C.
Jam
es,
C.
F.
Whi
ttem
ore,
and
H.
C.
Hol
den,
J.A
m.
Che
m.
Soc
.36,
1853
–6~
1914
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
100w
2/m
ass%
50.
03–
17.4
9J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
of~N
H4!
2C2O
4so
lutio
nssa
tura
ted
with
Th~C
2O4!
2at
20°C
~NH
4!2C
2O4
(100
w2
/mas
s%)
~NH
4!2C
2O4
(m2
/mol
kg2
1 )aT
h~C
2O4!
2
(100
w1
/mas
s%)
Th~
C2O
4!2
(m1
/mol
kg2
1 )aS
olid
phas
eb
0.03
0.00
242
0.03
0.00
0735
A
0.48
0.03
890.
200.
0049
0A
0.52
0.04
260.
360.
0088
2A
0.79
0.06
440.
350.
0085
8A
0.89
0.07
280.
570.
0142
B
1.50
0.12
41.
310.
0331
B
1.65
0.13
71.
380.
0348
B
4.83
0.43
25.
060.
138
B
6.93
0.65
57.
790.
224
B
10.2
71.
069
12.3
50.
391
B
12.2
01.
357
15.3
50.
519
B
15.0
71.
857
19.5
40.
732
B
17.4
9c2.
375
23.1
90.
958
B
5.62
0.48
71.
430.
0377
A
6.93
0.62
84.
070.
112
A
8.70
0.83
67.
400.
216
A
11.6
81.
246
12.7
60.
414
A
11.6
81.
246
12.7
70.
414
A
14.5
21.
730
17.8
40.
646
A
17.1
1c2.
270
22.1
80.
895
A
17.1
3c2.
274
22.1
60.
894
A
a
Co
~1!
~2!
~3!
Va
T/
c 2
(
a E b C Me
Iso
wi
co to sa ac
J
FIG
.3.
Tho
rium
bis~o
xala
te!–
amm
oniu
mox
alat
e–
wat
ersy
stem
.~I
!ho
mog
eneo
usso
lutio
ns;~II–
VIII
!he
tero
gene
ous
regi
ons,
satu
rate
d
lutio
nsin
equi
libriu
mw
ith:~
II!:
Th~
C2O
4!2•
6H2O
,@1
6788
-62-
8#,~I
II!
2Th~
C2O
4!2•
~NH
4!2C
2O4•
7H2O
,@
#,~I
V!
Th~
C2O
4!2•
H4!
2C2O
4•3H
2O,@
#,~V
!~N
H4!
2C2O
4•H
2O,
@600
0-70
-7#,
~VI!
Th~
C2O
4!2•
~NH
4!2C
2O4•
3H2O
1~N
H4!
2O4•
H2O
,~V
II!
Th~
C2O
4!2•
H4!
2C2O
4•3H
2O1
2Th~
C2O
4!2,
~NH
4!2C
2O4•
7H2O
,~V
III!
Th~
C2O
4!2•
6H2O
12T
h~C
2O4!
2•~N
H4!
2C2O
4•7H
2O
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Not
hing
spec
ified
.
Est
imat
edE
rror
:N
othi
ngsp
ecifi
ed.
560560 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!A
mm
oniu
mox
alat
e;(N
H 4!2C
2O4;
@111
3-38
-8#~3
!W
ater
;H 2
O;
@773
2-18
-5#
B.
Cla
udel
,G
.La
ng,
and
A.
Nav
arro
,B
ull.
Soc
.C
him
.F
ranc
e20
94–
9~19
66!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8co
mpo
sitio
nJ.
Hala
Exp
erim
enta
lDat
a
Pha
sedi
agra
m~F
ig.
3!of
the
Th~
C2O
4!2–
~NH
4!2C
2O4–
H2O
syst
emat
25°C
.
so ~N ~N Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
0.1
0.13
14.
6211
.623
6
0.1
0.14
14.
6812
.722
4
0.1
0.13
66.
1313
.623
1
0.1
0.13
46.
2113
.422
8
0.1
0.13
14.
6211
.623
6
0.1
0.14
14.
6812
.722
4
0.1
0.13
66.
1313
.66
231
0.1
0.13
46.
2113
.422
8
0.05
0.08
304.
747.
5912
0
0.05
0.07
404.
806.
7612
0
0.02
50.
0375
4.90
3.55
530
0.02
50.
0355
4.98
3.39
500
0.1
0.11
73.
412.
8271
.1
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.T
heco
mpi
ler
assu
mes
this
tobe
Th
~C2O
4!2•
6H2O
,@1
6788
-62-
8#si
nce
the
auth
ors
repo
rted
that
the
initi
also
lidph
ase
did
not
unde
rgo
any
chan
gedu
ring
equi
libra
tion.
b Initi
alco
ncen
trat
ion.
c Equ
ilibr
ium
tota
loxa
late
ion
conc
entr
atio
n.d S
olut
ions
with
pH,
3w
ere
brou
ght
toth
ede
sire
dac
idity
byad
ding
HN
O3.
e Equ
ilibr
ium
conc
entr
atio
nof
the
C 2O422
ion
calc
ulat
edby
usin
gdi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
,K
a15
1.05
310
21
and
Ka2
51.
88
102
5~R
ef.
1!fr
omto
tal
oxal
ate
conc
entr
atio
nan
dH
1io
nco
ncen
trat
ion.
Inso
lutio
nsof~N
H4!
2C2O
4no
tac
idifi
edw
ithH
NO 3
,th
enc
entr
atio
nof
H1io
nw
asob
tain
edas
log@H
1#5
2pH
2lo
gg~H
1!,
whe
re2
log
g~H
1!5
0.50
63AI/
(11
1.51
AI)
20.
2395
I~I
isio
nic
reng
th!.
Inac
idifi
ed~N
H4!
2C2O
4so
lutio
ns,
the
conc
entr
atio
nof
H1
ion
was
obta
ined
from
the
equa
tion
1#5
CH
NO
32@H
C2O
42#2
2@H
2C2O
4#an
ddi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
.
ditio
nali
nfor
mat
ion:
eso
lubi
lity
ofT
h~C
2O4!
2in
the
Th~
C2O
4!2–
~NH
4!2C
2O4–
H2O
syst
emat
equi
libriu
mox
alat
eio
nco
ncen
trat
ions<0.
01m
oldm
23
was
own
byth
eau
thor
sto
fitth
esa
me
equa
tion
asin
the
Th
~C2O
4!2–
C2H
2O4–
H2O
syst
em,
i.e.,
log
CT
h50.
2683
~log
@C2O
422#!
21
2.94
7lo
g @C
2O422
#12.
330.
high
erox
alat
eco
ncen
trat
ions
the
solu
bilit
yco
uld
beex
pres
sed
as
log
CT
h50.
893
log @
C2O
422#2
0.85
2.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sT
h~C
2O4!
2•6H
2Ow
asui
libra
ted
inth
erm
osta
ted
vess
els
for
6h
whi
chw
asfo
und
ffici
ent
tore
ach
equi
libriu
m.
The
equi
libriu
mco
ncen
trat
ion
oxal
ate
ion
inth
eso
lutio
nsw
asva
ried
byva
ryin
gei
ther
idity
atco
nsta
ntox
alat
eco
ncen
trat
ion,
orto
talo
xala
tenc
entr
atio
nat
afix
edac
idity
.A
fter
equi
libra
tion
the
tura
ted
solu
tions
wer
ece
ntrif
uged
and
the
conc
entr
atio
nof
rium
was
dete
rmin
edco
lorim
etric
ally
with
arse
nazo
III.
2
em
etho
dsof
pHm
easu
rem
ent
and
ofth
ede
term
inat
ion
ofal
equi
libriu
mox
alat
eco
ncen
trat
ion
wer
eno
tsp
ecifi
ed.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nac
cord
ing
toR
ef.
3.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.V
.Ste
pano
van
dE
.M.P
azuk
hin,
Zh.
Neo
rg.K
him
.15
,148
3~1
970!
.2 S
.B
.S
avvi
n,A
rse
na
zoII
I~A
tom
izda
t,M
osco
w,
1966!
~inR
ussi
an!,
p.10
7.3 D
.I.
Rya
bchi
kov
and
E.
K.
Gol
brai
kh,An
aly
tica
lCh
em
istr
yo
fT
ho
riu
m~P
ubl.
Hou
seA
cad.
Sci
.U
SS
R,
Mos
cow
,19
60!
~inR
ussi
an!,
p.33
.
561561IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
E.
M.
Paz
ukhi
n,E
.A
.S
mirn
ova,
A.
S.
Kriv
okha
tski
i,Y
u.L.
Paz
ukhi
na,
and
S.
M.
Koc
herg
in,
Rad
iokh
imiy
a27,
606
–11
~198
5!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.
025
–0.
1J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofT
h~C2O
4!in
~NH
4!2C
2O4
solu
tions
a
(NH
4!2C
2O4b
(c2
/mol
dm2
3 !C
2O422
c
~mol
dm2
3 !pH
d@C
2O422
#e
(102
mol
dm2
3 )T
h~C
2O4!
(104
c 1/m
oldm
23 )
0.1
0.09
812.
660.
634
14.9
0.1
0.09
812.
640.
613
14.9
0.1
0.09
62.
420.
364
7.20
0.1
0.09
62.
390.
344
7.20
0.1
0.09
881.
840.
0890
0.75
4
0.1
0.10
01.
590.
0452
0.16
4
0.1
0.09
701.
150.
0109
0.06
80
0.1
0.09
701.
120.
0109
0.03
96
0.09
950.
0997
1.27
0.01
780.
101
0.09
950.
0994
1.64
0.05
340.
221
0.09
950.
0994
1.62
0.05
237
0.22
1
0.1
0.1
1.96
0.12
40.
668
0.1
0.1
2.17
0.20
93.
55
0.09
950.
106
2.84
1.01
32.3
0.1
0.10
72.
660.
832
230
0.1
0.15
95.
7715
.73
297
0.1
0.13
86.
2613
.821
8
0.1
0.11
73.
463.
0271
.1
0.1
0.20
06.
1820
.040
9
0.1
0.14
16.
5214
.128
4
0.05
0.08
304.
747.
5912
0
0.05
0.07
44.
806.
7612
0
3 co st @H Ad
Th
sh At
Me
Iso
eq su of ac co sa tho
Th
tot
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#W
ater
;H 2
O;
@773
2-18
-5#
I.M
.K
oren
man
and
V.
V.
Kor
olik
hin,
Tru
dyK
him
.K
him
.T
ekhn
ol.3
,10
6–
9~1
960!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
01–
2.0
icst
reng
th/m
oldm
23 :
0.5,
1.0,
and
2.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at20
°of
CT
h~C2O
4!2
inH
Cl–
NaC
lsol
utio
nsa
HC
l
2/m
oldm
23 )
Ioni
cst
reng
th~m
oldm
23 !
Tot
alox
alat
e(1
04m
oldm
23 )
Ksp
b
(1022
mol
3dm
29 )
Ksp
c
(1022
mol
3dm
29 )
0.01
0.5
0.2
440
0.85
30.
025
0.5
0.3
830
1.21
50.
10.
50.
549
1.43
50.
250.
50.
910
1.43
50.
50.
51.
32.
40.
797
0.01
1.0
0.1
200
0.40
40.
025
1.0
0.3
690
1.21
50.
11.
00.
654
1.84
30.
251.
01.
013
1.73
10.
51.
01.
42.
30.
940
0.75
1.0
2.0
1.5
0.77
21.
01.
02.
51.
00.
588
0.5
2.0
1.7
4.6
1.43
60.
752.
02.
754.
01.
629
1.0
2.0
3.1
3.0
1.00
81.
52.
04.
41.
00.
723
2.0
2.0
60.
90.
648
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
alcu
late
dby
auth
ors
asKsp
5@T
h41
#@C
2O
422
#2as
the
first
appr
oxim
atio
nun
der
the
assu
mpt
ion
that
noco
mpl
exfo
rmat
ion
ofT
h41
with
xala
teio
nta
kes
plac
ein
the
satu
rate
dso
lutio
ns.
The
conc
entr
atio
nsof
C2O
422an
dT
h41w
ere
obta
ined
as @C
2O422
#5@o
xal # t
otZ
21
and
h41
#5@o
xal # t
ot/2
,w
here
@oxa
l # tot
isth
eex
perim
enta
llyde
term
ined
oxal
ate
conc
entr
atio
nin
the
satu
rate
dso
lutio
nan
dZ
5(1
@H1
#/K
a21
@H1
#2/K
a1K
a2).
The
auth
ors
used
Ka1
55.
9310
22
mol
dm2
3an
dK
a25
6.43
102
5m
oldm
23
for
the
diss
ocia
tion
con-
tant
sof
oxal
icac
id.T
hede
finite
tren
din
the
Ksp
valu
esso
obta
ined
led
the
auth
ors
toas
sum
eth
efo
rmat
ion
ofth
eT
h~C
2O4!
21co
mpl
exin
the
satu
rate
dso
lutio
nsfo
rw
hich
they
obta
ined
from
thei
rso
lubi
lity
data
the
inst
abili
tyco
nsta
ntas
K5
@Th4
1#@
C2O
422#
3@T
h~C
2O4!
21#2
1 5~1
.56
0.5!
310
29
mol
dm2
3 .T
hen
the
conc
entr
atio
nof
the
oxal
ate
anio
nbe
cam
e@C
2O422
#5@o
xal # t
ot/(
Z1
@oxa
l # tot/2
K!
and
Ks0
52
K2 @o
xal # t
ot3/(
2KZ
1@o
xal # t
ot)2 .
The
auth
ors
repo
rted
only
one
refin
edva
lue
obta
ined
from
this
equa
tion
asK
s05
(16
0.1)
310
222
mol
3dm
29
with
nosp
ecifi
catio
nof
the
mea
ning
ofth
ede
viat
ion
and
with
noin
dica
tion
asto
whe
ther
the
refin
edK
s0va
lue
was
the
mea
nof
allv
alue
sob
tain
edat
vario
usio
nic
stre
ngth
s.c C
alcu
late
dby
com
pile
rby
usin
gth
eau
thor
s’re
fined
form
ula
for
Ksp
.N
om
ean
valu
ew
asca
lcul
ated
beca
use
ofth
ede
finite
tren
din
Ksp
valu
esin
each
serie
sof
mea
sure
men
tsfo
rdi
ffere
ntio
nic
stre
ngth
s.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
shak
enw
ith~H
/Na!
Cls
olut
ions
atco
nsta
ntio
nic
stre
ngth
for
4–
6h
whi
chw
asfo
und
suffi
cien
tto
reac
heq
uilib
rium
.T
heox
alat
eco
ncen
trat
ion
in20
mL
aliq
uots
ofth
esa
tura
ted
solu
tion
was
dete
rmin
edby
titra
tion
with
0.05
NK
MnO 4
.S
ever
alpa
ralle
lex
perim
ents
wer
eru
nfo
rea
chH
Clc
once
ntra
tion,
and
two
orth
ree
aliq
uots
for
oxal
ate
dete
rmin
atio
nw
ere
take
nfr
omea
chsa
tura
ted
solu
tion.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
n,w
ashe
dw
ithw
ater
and
air
drie
dat
room
tem
pera
ture
.S
ourc
ean
dpu
rity
ofch
emic
als
used
wer
eno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Oxa
late
conc
entr
atio
n:th
eau
thor
sst
ated
the
erro
rof
titra
tion
as<
60.
015
mL
0.05
NK
Mn
O4.
Con
side
ring
the
volu
mes
of0.
05N
KM
nO4
solu
tion
need
edfo
rtit
ratio
ns~0.
015
–0.
48m
L!th
eco
mpi
ler
estim
ates
aner
ror
of6~3
–10
0!%
.
562562 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!S
alts
~3!
Wat
er;
H 2O
;@7
732-
18-5#
V.
I.S
pits
yn,
Zh.
Rus
s.F
iz.
Khi
m.
Obs
h.~J.
Rus
s.P
hys.
Che
m.
Soc
.!49
,35
7–
70~1
917!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inso
lutio
nsof
vario
ussa
ltsa
Sal
tS
alt
(c2
/mol
dm2
3 )T
hO2
~mg
dm2
3 !T
h~C
2O4!
2
(105
c 1/m
oldm
23 !
b
Non
e—
0.07
0.02
7
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#0.
10.
20.
077
Sod
ium
sulfa
te;
Na 2S
O4;
@775
7-82
-6#0.
050.
60.
231
Pot
assi
umhy
drog
ensu
lfate
;K
HS
O4
;@7
646-
93-7#
0.5
3011
.5
1.0
7729
.6
Am
mon
ium
chlo
ride;
NH 4
Cl;
@121
25-0
2-9#
0.1
0.3
0.11
5
Am
mon
ium
sulfa
te;~N
H4!
2SO
4;@7
783-
20-2#
0.05
1.0
0.38
5
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
labe
led
with
234 T
hw
aseq
uilib
rate
dw
ithth
eso
lutio
nof
the
desi
red
com
posi
tion
for6
hw
hich
was
foun
dsu
ffici
ent
for
satu
ratio
nto
bere
ache
d.A
fter
equi
libra
tion,
100
–20
0m
Lof
the
satu
rate
dso
lutio
nw
asev
apor
ated
ona
porc
elai
nedi
shan
db
activ
ityof
the
resi
due
was
mea
sure
din
anel
ectr
osco
pe.
The
amou
ntof
thor
ium
was
obta
ined
byco
mpa
ring
the
mea
sure
dac
tivity
with
that
ofa
know
nam
ount
ofla
bele
dT
h~C
2O4!
2•6H
2O.
Labe
led
Th~C
2O4!
2•6H
2Ow
aspr
epar
edby
prec
ipita
tion.
An
aliq
uot
ofU
X 1~23
4 Th!
prep
arat
ion
was
adde
dto
aso
lutio
nof
Th~
NO
3!4,
and
Th~
C2O
4!2•
6H2O
was
prec
ipita
ted
byad
ding
hot
solu
tion
ofox
alic
acid
.The
prec
ipita
tew
asw
ashe
dse
vera
ltim
esw
ithho
tw
ater
.A
fter
seve
ral
deca
ntat
ions
with
cold
wat
erth
epr
ecip
itate
turn
edin
tocr
ysta
lline
form
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
prec
isio
n6~1
–2!
%~a
utho
r!.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 ion
(c a E b C o @T 1 s
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
24
22
stirr
edw
ith~H
1N
H4!
ClO
4so
lutio
nsfo
r4
hin
ath
erm
osta
ted
appa
ratu
s.T
heox
alat
eco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
titra
tion
agai
nst
0.01
NK
MnO 4so
lutio
n.
24
22
purit
yof
chem
ical
sw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
3K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 C.
W.
Dav
ies,
J.C
hem
.S
oc20
93~193
8!.
2 A.
A.
Grin
berg
and
G.
I.P
ertz
hak,
Tru
dyR
adie
v.In
st.
Aka
d.N
auk
SS
SR7
,50
~195
6!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2
;@2
040-
52-0#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
0#W
ater
;H 2
O;
@773
2-18
-5#
M.
Col
ani,
Com
pt.
Ren
d.15
6,10
75–
6~1
913!
;15
6,19
07–
9~1
913!
.
riabl
es:
Pre
pare
dby
:
K:
276,
280,
and
323
0w2
/mas
s%
:0.
02–
10.9
0w3
/mas
s%
:1.
2–
35.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
thre
edi
ffere
ntte
mpe
ratu
res
ofT
h~C
2O4!
2in
C2H
2O4–
HC
lsol
utio
ns
mpe
ratu
re~°
C!
HC
l(1
00w
2/m
ass
%)
C2H
2O4
(100
w3
/mas
s%
)T
h~m
ass
%!S
olid
phas
ea
1334
.80.
310.
30B
34.9
0.56
0.18
B
35.0
0.79
0.11
B
34.9
1.52
0.05
B
35.0
1.81
0.04
B
171.
20.
710.
0013
A
40.
710.
0020
A
8.5
0.71
0.00
18A
13.2
0.71
0.00
22A
13.2
1.44
0.00
14A
13.3
2.63
0.00
13A
5012
.40.
024
0.03
3A
12.3
0.14
0.01
2A
12.4
0.28
0.00
54A
12.4
0.43
0.00
48A
12.4
1.37
0.00
33A
12.4
2.06
0.00
25A
12.3
2.76
0.00
26A
12.4
5.49
0.00
26A
12.3
10.9
0.00
17A
32.6
0.43
0.63
B
32.8
0.82
0.37
B
32.6
1.34
0.26
B
32.9
2.30
0.14
B
32.5
4.46
0.08
6B
32.0
6.64
0.07
0B
a ~A!
Th~
C2O
4!2•
6H2O
,@1
6788
-62-
8#;~B
!T
h 4~C
2O4!
6Cl 4•20
H2O
,@
#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
No
deta
ilsgi
ven
exce
ptth
atat
17°C
3m
onth
sw
ere
nece
ssar
yto
brin
gth
eso
lutio
nin
toeq
uilib
rium
with
the
solid
phas
eA
.E
xper
imen
tsat.
30m
ass
%H
Clw
ere
carr
ied
out
usin
gB
asth
est
artin
gso
lidph
ase.
The
com
posi
tion
ofB
asth
eeq
uilib
rium
solid
phas
ew
asco
nfirm
edby
chem
ical
anal
ysis
.
Sou
rce
and
purit
yof
chem
ical
sus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
563563IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2
;@2
040-
52-0#
~2!
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#~3
!A
mm
oniu
mpe
rchl
orat
e;N
H 4ClO
4;
@779
0-98
-9#~4
!W
ater
;H 2
O;
@773
2-18
-5#
A.
I.M
oskv
inan
dL.
N.
Ess
en,
Zh.
Neo
rg.
Khi
m.,12
,68
8–
93~1
967!
;R
uss.
J.In
org.
Che
m.12
,35
9–
62~1
967!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
01–
1.0
c 3/m
oldm
23 :
0.25
–1.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!in
~H1
NH
4!C
lO4
solu
tions
ofco
nsta
ntio
nic
stre
ngth
of1.
0m
oldm2
3a
HC
lO4
(c2
/mol
dm2
3 )N
H4C
lO4
(c3
/mol
dm2
3 )T
h~C
2O4!
2
(105
c 1/m
oldm
23 )
—1.
01.
20
0.01
1.0
1.25
0.1
0.9
2.46
0.25
0.75
4.07
0.50
0.50
7.17
0.75
0.25
8.14
1.0
—9.
01
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.
Add
ition
alin
form
atio
n:In
the
satu
rate
dso
lutio
ns,
Th
~C2O
4!2,
Th~
C2O
4!21
and
Th41
spec
ies
wer
eco
nsid
ered
toex
ist.
Fro
mth
eso
lubi
lity
data
the
equi
libriu
mco
nsta
ntfo
rth
ere
actio
nT
h~C2O
4!21
4H1�
Th41
12C
2H2O
4w
asob
tain
edas
K5
(2.7
61.
2)3
102
12m
ol2
2dm
6 ,an
dfr
omth
isth
eso
lubi
lity
prod
uct
ofT
h~C2O
4!2
was
obta
ined
asK
sp5
(Ka1
Ka2
)2K
54.
3310
222
mol
3dm
29 .
The
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
50.
118
mol
dm2
3an
dK
a25
1.06
310
24
mol
dm2
3 ,fo
rio
nic
stre
ngth
of1.
0m
oldm
23 ,
wer
eob
tain
edfr
omun
spec
ified
ther
mod
y-na
mic
cons
tant
sby
usin
gD
avie
s’eq
uatio
n.1
Als
oca
lcul
ated
wer
eov
eral
lsta
bilit
yco
nsta
nts
ofth
eT
h~C
2O4!
21an
dT
h~C
2O4!
2co
mpl
exes
asb
15
1.73
108
mol
21
dm3
and
b25
2.83
1016
mol
22
dm6 ,
resp
ectiv
ely.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
Th
~CO
!•6H
Ow
asT
h~C
O!•6H
Ow
aspr
epar
edac
cord
ing
toR
ef.
2.S
ourc
ean
d
Co
~1!
~2!
~3!
~4!
Va
T/
10 10 Te
J
In ries
ed ne.
um
R.
V.
Bry
zgal
ova,
Yu.
M.
Rog
ozin
,an
dI.
V.
Che
rnits
kaya
,R
adio
khim
iya
12,
286
~197
0!.
3 P.
R.
Mon
son
and
R.
Hal
l,U
SD
OE
Rep
ort
DP
-157
6,19
81.
4 E.
M.
Paz
ukhi
n,E
.A
.S
mirn
ova,
A.
S.
Kriv
ocha
tski
i,Y
u.L.
Paz
ukhi
na,
and
S.
M.
Koc
herg
in,
Rad
iokh
imiy
a27
,60
6~1
985!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4) 2
;@2
040-
52-0#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49–
54~1
963!
;R
uss.
J.In
org.
Che
m.8,
647
–50
~196
3!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
kg2
1:
0.63
–1.
35/m
olkg
21:
0–
22.9
6
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inC
2H2O
4–
HN
O3a
NO
3
00w
3/
ass
%)
HN
O3
~mol
kg2
1 !bH
NO
3
(m3
/mol
kg2
1 )c
C2H
2O4
(100
w2
/m
ass
%)
C2H
2O4
~mol
kg2
1 !bC
2H2O
4
(m2
/mol
kg2
1 )cT
h~m
gkg
21 !b
Th
(104
mol
kg2
1 )bT
h(m
2/
mol
kg2
1 )c
00
010
.45
1.16
1.30
180.
780.
87
4.36
0.69
0.78
7.39
0.82
0.93
180.
780.
88
1.78
1.87
2.29
6.60
0.73
0.90
170.
730.
90
5.88
2.52
3.22
5.76
0.64
0.82
170.
730.
93
1.69
3.44
4.70
5.14
0.57
0.78
150.
650.
88
8.03
4.45
6.58
4.40
0.49
0.72
230.
991.
47
5.42
5.62
9.25
3.83
0.43
0.70
261.
121.
84
7.0
5.89
9.85
3.40
0.38
0.63
411.
772.
96
6.89
7.44
14.8
73.
070.
340.
6877
3.32
6.63
6.34
8.94
22.9
64.
720.
521.
3545
619
.65
50.5
heeq
uilib
rium
solid
phas
esw
ere
mix
ture
sof
Th
~C2O
4!2•
6H2O
,@1
6788
-62-
8#,an
dC 2
H2O
4•2H
2O,
@615
3-56
-6#in
all
satu
rate
dso
lu-
ns.
olpe
rkg
solu
tion.
alcu
late
dby
com
pile
r
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.O
xalic
acid
was
adde
dto
satu
rate
dlu
tions
ofT
h~C2O
4!2•
6H2O
inH
NO
3so
lutio
nsof
vario
usco
ncen
trat
ions
,an
dth
em
ixtu
res
wer
eag
itate
dfo
r6
–7
days
.T
hesa
tura
ted
solu
tions
wer
ean
alyz
edfo
rox
alat
eco
nten
tan
dto
tala
cidi
tyby
titra
tion
with
0.05
NK
MnO
4an
d0.
1N
NaO
H,
resp
ectiv
ely,
and
the
HN
O 3co
ncen
trat
ion
was
obta
ined
bydi
ffere
nce.
The
conc
entr
atio
nof
thor
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
.S
ampl
esof
the
satu
rate
dso
lutio
nsw
ere
with
draw
non
toas
hles
sfil
ter,
drie
d,an
dbco
unte
d.T
heb
activ
ityof
the
satu
rate
dso
lutio
nsw
asco
mpa
red
with
thos
eof
stan
dard
spr
epar
edfr
omla
bele
dT
h~C
2O4!
2•6H
2O.
The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asco
nfirm
edby
optic
alm
icro
scop
yan
dch
emic
alan
alys
is.
Th~
C2O
4!2•
6H2O
was
prep
ared
from
thor
ium
nitr
ate
ofun
spec
ified
sour
cean
dpu
rity.
To
incr
ease
the
bac
tivity
ofth
oriu
mfo
rits
subs
eque
ntra
diom
etric
dete
rmin
atio
n,ag
edU
O2~
NO
3!2
inra
dioa
ctiv
eeq
uilib
rium
with
thor
ium
isot
ope
UX
1(23
4 Th)
was
adde
dto
thor
ium
nitr
ate,
and
Th
~C2O
4!2•
6H2O
was
prec
ipita
ted
from
hot
solu
tion
with
ast
oich
iom
etric
amou
ntof
oxal
icac
id.
The
labe
led
Th~C
2O4!
2•6H
2Ow
asfil
tere
d,w
ashe
dte
ntim
esw
ithbo
iling
wat
er,
and
air
drie
d.F
resh
lydi
still
ed60
.4%
HN
O 3w
asus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
564564 JIRI HALA
4.9.
6.E
valu
atio
nof
the
Th
„C
2O4…
2¿C
2H2O
4¿H
NO
3¿H
2OS
yste
m
Com
pone
nts:
Eva
luat
or:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2
;@2
040-
52-0#
~2!
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
~3!
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
Feb
ruar
y20
00
Crit
ical
Eva
luat
ion:
Thi
ssy
stem
has
been
stud
ied
info
urre
fere
nces
.1
–4
Alth
ough
quite
anu
mbe
rof
expe
rimen
talr
esul
tsar
eav
aila
ble
thei
rco
mpa
rison
isdi
fficu
ltsi
nce
the
solu
bilit
ies
have
been
repo
rted
inva
rious
units
,an
dth
eau
thor
sus
edva
rious
appr
oach
esto
stud
ying
this
syst
em.
spite
ofal
lthi
s,ev
ena
roug
h,co
mpa
rison
reve
als
cons
ider
able
inco
nsis
tenc
yam
ong
the
publ
ishe
dda
ta.T
hus
inR
efs.
1an
d3,
one
seof
expe
rimen
tsw
asru
nw
ithbo
thH
NO 3an
dC 2
H2O
4co
ncen
trat
ions
bein
gva
ried
atth
esa
me
time.
Neg
lect
ing
vario
usun
itsus
edan
dte
mpe
ratu
reof
the
mea
sure
men
ts~m
olkg
21
solu
tion
at29
8.15
Kin
Ref
.1
and
mol
dm23
at29
6.15
inR
ef.
3!,on
eca
nfin
dex
perim
ents
with
sim
ilar
HN
O3
and
C 2H
2O4
conc
entr
atio
nsbu
tw
idel
ydi
fferin
gin
Th~C
2O4!
2so
lubi
litie
sin
both
serie
s,e.
g.,
8.94
mol
HN
O 3kg
21
solu
tion/
0.52
mol
C 2H2O
4kg
21
solu
tion/
1.96
5310
23
mol
Th
kg2
1so
lutio
n1
8.2
mol
dm2
3H
NO
3/0
.50
mol
dm2
3C
2H2O
4/3
.233
102
5m
oldm
23
Th,
3or
3.44
mol
HN
O 3kg
21
solu
tion/
0.57
mol
C 2H2O
4kg
21
solu
tion/
6.53
102
5m
olT
hkg
21
solu
tion1
3.2
mol
dm2
3H
NO
3/0
.54
mol
dm2
3C
2H2O
4/9
.913
102
6m
oldm
23
Th.
3
Suc
hdi
ffere
nces
are
muc
hgr
eate
rth
anco
uld
resu
ltfr
omth
edi
ffere
nces
inco
ncen
trat
ions
.S
mal
ler
diffe
renc
esca
nbe
obse
rvbe
twee
nth
ere
sults
inR
efs.
2an
d4
whe
real
way
sth
eco
ncen
trat
ion
ofon
eco
mpo
nent
was
kept
cons
tant
whi
leva
ryin
gth
eot
her
oH
ere
com
paris
onca
nbe
done
mor
eea
sily
sinc
eid
entic
alco
ncen
trat
ion
unit,
mol
dm2
3 ,w
asus
ed.
Neg
lect
ing
the
diffe
renc
esin
tem
pera
ture
,i.e
.,29
8.15
Kin
Ref
.2
and
293.
15K
inR
ef.
4,on
eca
nfin
dth
efo
llow
ing
data
:1.
0m
oldm
23
HN
O3/0
.5m
oldm
23
C2H
2O4/5
310
27
mol
dm2
3T
h~C
2O4!
22
1.0
mol
dm2
3H
NO
3/0
.5m
oldm
23
C2H
2O4/1
.93
102
6m
oldm
23
Th~
C2O
4!24
1.48
mol
dm2
3H
NO
3/0
.05
mol
dm2
3C
2H2O
4/2
.43
102
6m
oldm
23
Th~
C2O
4!22
1.5
mol
dm2
3H
NO
3/0
.05
mol
dm2
3C
2H2O
4/4
.313
102
6m
oldm
23
Th~
C2O
4!24
2.49
mol
dm2
3H
NO
3/0
.05
mol
dm2
3C
2H2O
4/7
.23
102
6m
oldm
23
Th~
C2O
4!22
2.5
mol
dm2
3H
NO
3/0
.05
mol
dm2
3C
2H2O
4/6
.473
102
6m
oldm
23
Th~
C2O
4!24
Inad
ditio
n,th
epa
per
byB
ryzg
alov
aeta
l.2sh
ows
disc
repa
ncie
sev
enbe
twee
ntw
ose
ries
ofex
perim
ents
ofth
atsa
me
docu
men
tw
here
two
data
for
the
solu
bilit
yof
Th~C
2O4!
2in
the
syst
em1.
0m
oldm2
3H
NO
3/0
.05
mol
dm2
3C
2H2O
4di
ffer
bya
fact
orof
4.T
hesa
me
isfo
und
inth
esy
stem
1.0
mol
dm23
HN
O3/0
.01
mol
dm2
3C
2H2O
4.It
can
thus
beco
nclu
ded
that
alth
ough
the
solu
bilit
yda
tapu
blis
hed
for
Th
~C2O
4!2
inth
eC 2
H2O
4–
HN
O3–
H2O
syst
emof
fer
good
appr
oxim
atio
n,no
neof
them
can
bere
com
men
ded
aspr
efer
red
valu
es.
The
disc
repa
nces
may
part
lybe
due
todi
ffere
nces
ineq
uilib
ritim
e~6
–7
days
inR
efs.
1,3
and
seve
ralh
ours
inR
efs.
2,4
!,pa
rtly
todi
ffere
ntpr
ecis
ion
ofth
em
etho
dsus
edfo
rth
oriu
mde
term
inat
ion
~col
orim
etry
and
radi
omet
ry!.
Ref
eren
ces:
1 A.
G.
Kur
nako
vaan
dL.
K.
Shu
boch
kin,
Zh.
Neo
rg.
Khi
m.
8,12
49~1
963!
.2
Co
~1!
~2!
~3!
~4!
Va
T/
m2
m3 H
(1 m
1 1 2 2 3 3 4 5
a T tio b M c C Me
Iso
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Tw
om
odifi
catio
nsof
isot
herm
alm
etho
dw
ere
used
.In
the
first
one,
thor
ium
oxal
ate
was
equi
libra
ted
with
C2H
2O4–
HN
O3
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
–7
days
,w
hich
was
know
nto
besu
ffici
ent
tore
ach
the
equi
libriu
m.
2In
the
seco
ndm
etho
d,th
oriu
mox
alat
ew
aspr
ecip
itate
ddi
rect
lyby
addi
tion
ofC
2H2O
4in
a20
%–
40%
exce
ssto
aT
h~N
O3!
4so
lutio
nin
0.5
–8.
0m
oldm
23
HN
O3
solu
tions
.T
hese
solu
tions
wer
eeq
uilib
rate
dfo
r10
–14
h.It
has
not
been
men
tione
dif
the
solu
tions
wer
eth
erm
osta
ted
durin
geq
uilib
ratio
n,or
whi
chre
sults
wer
eob
tain
edby
whi
chof
the
two
met
hods
used
.T
horiu
mw
asde
term
ined
inth
esa
tura
ted
solu
tions
spec
trop
hoto
met
rical
lyby
the
arse
nazo
~III
!m
etho
dm
odifi
edfo
rH
NO
3so
lutio
ns3
~sul
fam
icac
idw
asus
edto
rem
ove
HN
O2
whi
chde
stro
ysth
ere
agen
tan
dits
thor
ium
com
plex
!.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 A.
I.M
oskv
inan
dL.
N.
Ess
en,
Rus
s.J.
Inor
g.C
hem
.12
,35
9~1
967!
.2 A
.G
.K
urna
kova
and
L.K
.S
hubo
chki
n,R
uss.
J.In
org.
Che
m8,
647
~196
3!.
3 E.
W.
Bau
man
n,U
SD
OE
Rep
ort
DP
-156
0,19
80.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
R.
V.
Bry
zgal
ova,
Yu.
M.
Rog
ozin
,an
dI.
V.
Che
rnits
kaya
,R
adio
khim
iya1
2,28
6–
91~1
970!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0
–0.
5/m
oldm
23 :
0.99
5–
2.49
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inC
2H2O
4/H
NO
3so
lutio
nsa
HN
O3
3/m
oldm
23 )
C2H
2O4
(c2
/mol
dm2
3 )C
2O422
b
(107
mol
dm2
3 )T
h~C
2O4!
2
(106
c 1/m
oldm
23 )
1.0
——
160
1.0
0.00
100.
133
16
1.0
0.00
250.
330
4.2
1.0
0.00
500.
665
2.5
1.0
0.01
01.
331.
1
1.0
0.02
53.
300.
75
1.0
0.05
06.
650.
5
1.0
0.10
13.3
0.5
1.0
0.35
46.5
0.4
1.0
0.50
66.5
0.5
0.99
50.
011.
354.
0
1.43
0.01
0.50
8.1
2.0
0.01
0.24
21
2.49
0.01
0.15
653
0.99
50.
056.
71.
9
1.48
0.05
2.5
2.4
2.0
0.05
1.2
3.8
2.49
0.05
0.78
7.2
quili
briu
mso
lidph
ases
wer
eno
tinv
estig
ated
.The
com
pile
ras
sum
esth
isto
beth
ehe
xahy
drat
e,T
h~C
2O4!
2•6H
2O,@
1678
8-62
-8#,w
hich
asbe
enre
port
edto
best
able
inac
idic
solu
tions
.1
b Dis
soci
atio
nco
nsta
nts
ofox
alic
acid
used
inca
lcul
atin
gth
eox
alat
eio
nco
ncen
trat
ion
wer
eno
tre
port
ed.
565565IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#~2
!O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
~3!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~4
!W
ater
;H 2
O;
@773
2-18
-5#
P.
R.
Mon
son
and
R.
Hal
l,U
SD
OE
Rep
ort
DP
-157
6,E
.I.
Du
Pon
tde
Nem
ours
and
Co.
,S
avan
nah
Riv
erLa
bora
tory
,19
81.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
6c 2
/mol
dm2
3 :0.
18–
0.81
c 3/m
oldm
23 :
0.28
–10
.9
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
23°C
ofT
h~C2O
4!2
inC
2H2O
4–
HN
O3
solu
tions
a
C2H
2O4b
(c2
/mol
dm2
3 )H
NO
3b
(c3
/mol
dm2
3 )T
h41
~mg
dm2
3 !T
h~C
2O4!
2
(106
c 1/m
oldm
23 )c
0.41
10.9
320
1380
0.50
8.2
7.5
32.3
0.42
5.1
3.7
15.9
0.37
4.1
1.9
8.19
0.54
3.2
2.3
9.91
0.57
1.7
0.7
3.02
0.18
0.58
1.6
6.90
0.81
0.28
1.8
7.76
a Equ
ilibr
ium
solid
phas
esno
tin
vest
igat
edb In
itial
~tot
al!
conc
entr
atio
n.c C
alcu
late
dby
com
pile
r.
Add
ition
alIn
form
atio
n:W
hen
plot
ted
agai
nst
the
ratio @
C2H
2O4#
/ @H
NO
3#2
~pro
port
iona
lto
@C2O
422#/
Ka1
Ka2
,w
here
Ka1
and
Ka2
are
diss
ocia
tion
cons
tant
sof
oxal
icac
id!,
the
solu
bilit
yof
Th~
C2O
4!2
pass
edth
roug
ha
shal
low
min
imum
at @C2H
2O4#
/ @H
NO
3#2
ofap
prox
imat
ely
0.2
–0.
4.T
hem
inim
umso
lubi
lity
was
expl
aine
dby
the
auth
ors
asco
rres
pond
ing
toth
esi
tuat
ion
whe
reth
esp
arin
gly
solu
ble
Th
~C2O
4!2
com
plex
pred
omin
ated
inth
eso
lutio
n.T
hein
crea
sein
solu
bilit
yat
low
eror
high
er@C
2H2O
4#/ @
HN
O3#
2va
lues
then
corr
espo
nded
toth
efo
rmat
ion
inth
eso
lutio
nof
the
catio
nic
Th~C
2O4!
21or
anio
nic
Th~C
2O4!
322an
dT
h~C
2O4!
442co
mpl
exes
,1re
spec
tivel
y.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 (c a E h
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
E.
M.
Paz
ukhi
n,E.
A.
Sm
irnov
a,A
.S
.K
rivok
hats
kii,
Yu.
L.P
azuk
hina
,an
dS
.M
.K
oche
rgin
,R
adio
khim
iya27
,60
6–
11~1
985!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
001
–0.
5/m
oldm
23 :
0.5
–3.
0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at20
°Cof
Th~C
2O4!
2in
C2H
2O4–
HN
O3
solu
tions
a
HN
O3b
3/m
oldm
23 )
C2H
2O4b
(c2
/mol
dm2
3 )T
otal
oxal
atec
~mol
dm2
3 !@C
2O422
#d
(107
mol
dm2
3 )T
h~C
2O4!
2
(106
c 1/m
oldm
23 )
HN
O3e
(m2
/m
olkg
21 )
0.5
—0.
000
135
0.08
8467
.70.
523
1.0
—0.
000
432
0.07
7221
61.
05
1.5
—0.
000
604
0.04
9530
21.
56
2.0
—0.
000
984
0.04
6149
22.
10
2.5
—0.
001
180.
0358
590
2.70
3.0
—0.
001
500.
0318
750
3.29
3.0
0.05
1.06
6.90
3.0
0.02
50.
503
9.91
2.0
0.2
9.38
2.93
2.0
0.1
4.69
2.37
2.0
0.02
51.
177.
11
2.5
0.1
3.03
2.72
2.5
0.05
1.52
6.47
2.5
0.02
50.
758
7.24
1.5
0.2
16.4
2.59
1.5
0.1
8.20
2.37
1.5
0.02
52.
54.
96
1.5
0.05
4.10
4.31
1.35
0.15
916
.02.
07
1.35
0.1
10.1
1.8
1.35
0.1
10.1
2.2
1.32
50.
0026
0.27
07.
89
1.30
70.
0016
50.
176
11.4
1.28
80.
0010
50.
116
22.5
1.27
0.10
511
.92.
20
1.25
0.17
520
.42.
07
1.24
0.41
549
.11.
81
1.00
0.50
89.3
2.16
0.50
0.10
65.2
1.98
0.50
0.05
32.6
1.90
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.It
can
beas
sum
edth
isto
beth
ehe
xahy
drat
e,T
h~C
2O4!
2•6H
2O,
@167
88-6
2-8#,
inal
l
solu
tions
sinc
eth
eau
thor
sre
port
edth
atth
ein
itial
solid
phas
edi
dno
tun
derg
oan
ych
ange
durin
geq
uilib
ratio
n.b In
itial
conc
entr
atio
n.c In
solu
tions
with
initi
ally
noox
alic
acid
adde
d,th
ese
valu
esar
egi
ven
byth
eso
lubi
lity
ofT
h~C
2O4!
2.d E
quili
briu
mco
ncen
trat
ion
ofth
eC 2O
422io
nca
lcul
ated
from
tota
loxa
late
conc
entr
atio
nan
dH
1io
nco
ncen
trat
ion
byus
ing
diss
ocia
tion
cons
tant
sof
oxal
icac
id,K
a15
1.05
310
21
and
Ka2
51.
883
102
5ta
ken
from
Ref
.1.
e Cal
cula
ted
byco
mpi
ler
from
dens
ities
ofH
NO
3so
lutio
nta
ken
from
Ref
.2.
Add
ition
alIn
form
atio
n:
The
solu
bilit
yof
Th~
C2O
4!2
inth
eT
h~C
2O4!
2–
C2H
2O4–
HN
O3–
H2O
syst
emw
assh
own
byth
eau
thor
sto
fitth
esa
me
equa
tion
asin
the
Th~
C2O
4!2–
C2H
2O4–
H2O
syst
em,
i.e.,
logC
Th5
0.26
83(l
og@C
2O422
#)21
2.94
7lo
g @C
2O422
#12.
330.
566566 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
20–
100
mg
ofT
h~C
2O4!
2•6H
2Ow
ere
stirr
edw
itha
rota
ryst
irrer
at20
0–
600
rpm
with
10m
Lso
lutio
nun
tileq
uilib
rium
was
reac
hed~a
few
hour
s!.E
xces
sso
lidw
asfil
tere
dof
fin
ath
erm
osta
ted
spac
eat
25°C
.T
horiu
min
the
filtr
ate
was
dete
rmin
edco
lorim
etric
ally
with
arse
nazo
III.2D
ata
repo
rted
are
aver
age
valu
esof
3–
4de
term
inat
ions
.
The
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nfr
om0.
1m
oldm
23
solu
tions
ofT
h~NO
3!4
and
oxal
icac
id.T
hepr
ecip
itate
was
allo
wed
tost
and
for
1da
y,th
em
othe
rliq
uor
deca
nted
,an
dth
epr
ecip
itate
stirr
edw
ith0.
1m
oldm2
3H
NO
3fo
r5
–6
h.T
hew
ashi
ngw
asre
peat
edun
tilth
ew
ash
solu
tion
cont
aine
deq
uiva
lent
conc
entr
atio
nsof
thor
ium
and
oxal
icac
id.
The
prec
ipita
tew
asth
enfil
tere
d,w
ashe
dw
ithw
ater
,et
hano
l,an
det
her,
and
air
drie
dat
room
tem
pera
ture
.The
com
posi
tion
ofth
epr
oduc
tas
foun
dby
anal
ysis
was
Th:
oxal
ate:
H2O
51
:1.9
8:6.
3.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.T
horiu
mco
ncen
trat
ion:
prec
isio
n6
10%
for
CT
h.1.
23
102
6m
oldm
23
and
6~2
0–
30!
%fo
rC
Th,
1.2
310
26
mol
dm2
3~a
utho
rs!.
Com
paris
onof
the
solu
bilit
ies
ofT
h~C
2O4!
2ob
tain
edfo
r1.
0m
oldm
23
HN
O3
at0.
01an
d0.
05m
oldm
23
oxal
icac
idw
ithth
eco
rres
pond
ing
valu
esfo
r0.
995
mol
dm2
3H
NO
3in
the
seco
ndan
dth
irdse
ries
ofm
easu
rem
ents
show
sde
viat
ions
muc
hla
rger
than
wou
ldfo
llow
from
the
stat
edpr
ecis
ion.
Ref
eren
ces:
1 E.
M.
Paz
ukhi
n,E
.A
.S
mirn
ova,
A.
S.
Kriv
okha
tski
i,Y
u.L.
Paz
ukhi
na,
and
S.
M.
Koc
herg
in,
Rad
iokh
imiy
a27
,60
6~1
985!
.2 A
.A
.N
emod
ruk
and
N.
E.
Koc
hetk
ova,
Zh.
Ana
lit.
Khi
m.
17,
330
~196
2!.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 (c
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
bis~o
xala
te!;
Th~
C2O
4!2;
@204
0-52
-0#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#W
ater
;H 2
O;
@773
2-18
-5#
A.
I.M
oskv
inan
dL.
N.
Ess
en,
Zh.
Neo
rg.
Khi
m.12,
688
–93
;~1
967!
Rus
s.J.
Inor
g.C
hem
.,12,
359
–62
~196
7!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
08–
0.55
5/m
oldm
23 :
1.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofT
h~C2O
4!2
inC
2H2O
4–
HC
lO4
solu
tions
a
C2H
2O4
(c2
/mol
dm2
3 !T
h~C
2O4!
2
(104
c 1/m
oldm
23 !
0.08
00.
060
0.15
80.
940
0.23
81.
00
0.31
71.
30
0.39
71.
60
0.47
61.
70
0.55
51.
86
llso
lutio
nsco
ntai
ned
1.0
mol
dm23
HC
lO4.
Sol
idph
ases
wer
eno
tin
vest
igat
ed.
The
com
pile
ras
sum
esth
isto
beth
ehe
xahy
drat
e,h~
C2O
4!•6H
2O,
@167
88-6
2-8#,
whi
chpr
ecip
itate
sfr
omac
idic
solu
tions
cont
aini
ngox
alic
acid
.1
ditio
nali
nfor
mat
ion:
eso
lubi
lity
data
wer
eus
edto
obta
inth
eso
lubi
lity
prod
uct
ofT
h~C
2O4!
2in
two
diffe
rent
way
s.G
raph
ical
trea
tmen
tac
cord
ing
toR
efs.
and
3of
the
data
yiel
ded
the
valu
eofK
sp5
13
1022
mol
3dm
29 .
Ano
ther
appr
oach
cons
ider
edth
ein
crea
sing
solu
bilit
yof
Th
~C2O
4!2
inH
2O4–
HC
lO4
solu
tions
.A
ssum
ing
that
Th~C
2O4!
2an
dT
h~C
2O4!
322on
lyco
ntrib
uted
toth
eso
lubi
lity
ofT
h~C2O
4!2
inth
ese
solu
tions
,so
lubi
lity
was
expr
esse
das
@Th~
C2O
4!2#
1@T
h~C
2O4!
322#5
b2@T
h41#@
C2O
422#2
1b
3@T
h41#@
C2O
422#3
5b
2K
s01
b3K
s0@C
2O422
#
ere
b2
and
b3
are
over
alls
tabi
lity
cons
tant
sof
the
corr
espo
ndin
gco
mpl
exes
.T
heso
lubi
lity
prod
uct
was
then
obta
ined
bygr
aphi
cal
trap
olat
ion
ofS
toze
roox
alic
acid
conc
entr
atio
nas
4.1
310
222
mol
3dm
29 .
Tak
ing
then
into
cons
ider
atio
nth
eva
lueKsp
obta
ined
inT
h~C
2O4!
2–
HC
lO4–
NH
4ClO
4–
H2O
syst
em,
anav
erag
eva
lue
ofKsp
5(4
.26
0.1)
310
222
mol
3dm
29
was
give
nw
hich
was
reca
lcu-
edto
Ksp0
51.
1310
225
mol
3dm
29
byus
ing
the
Dav
ies’
equa
tion.4
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
was
stirr
edw
ith1.
0m
oldm
23
solu
tions
ofH
ClO
4co
ntai
ning
vario
usam
ount
sof
oxal
icac
idfor4
hin
ath
ermos
tate
dap
para
tus.
The
conc
entr
atio
nof
thor
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
anun
spec
ified
grav
imet
ricm
etho
d.
Th~
C2O
4!2•
6H2O
was
prep
ared
acco
rdin
gto
Ref
.5.
Sou
rce
and
purit
yof
chem
ical
sw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
3K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 R.
V.
Bry
zgal
ova,
Yu.
M.
Rog
ozin
,an
dI.
V.
Che
rnits
kaya
,R
adio
khim
iya1
2,28
6~1
970!
.2 A
.I.
Mos
kvin
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,95
6~1
958!
.3 F
.A
.Z
akha
rova
and
A.
I.M
oskv
in,
Zh.
Neo
rg.
Khi
m.
5,12
28~1
960!
.4 C
.W
.D
avie
s,J.
Che
m.
Soc
.20
93~193
8!.
5 A.
A.
Grin
berg
and
G.
I.P
ertz
hak,
Tru
dyR
adie
v.In
st.
Aka
d.N
auk
SS
SR7
,50
~195
6!.
567567IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Th
~C2O
4!2•
6H2O
was
equi
libra
ted
inth
erm
osta
ted
vess
els
for
6h
whi
chw
asfo
und
suffi
cien
tto
reac
heq
uilib
rium
.T
heeq
uilib
rium
conc
entr
atio
nof
oxal
ate
ion
inth
eso
lutio
nsw
asva
ried
byva
ryin
gei
ther
acid
ityat
cons
tant
oxal
ate
conc
entr
atio
n,or
tota
loxa
late
conc
entr
atio
nat
afix
edac
idity
.A
fter
equi
libra
tion
the
satu
rate
dso
lutio
nsw
ere
cent
rifug
edan
dth
eco
ncen
trat
ion
ofth
oriu
mw
asde
term
ined
colo
rimet
rical
lyw
ithar
sena
zoIII
.3
The
met
hod
for
the
dete
rmin
atio
nof
oxal
ate
was
not
spec
ified
.T
heau
thor
sre
port
edth
atth
ein
itial
solid
phas
edi
dno
tun
derg
oan
ych
ange
durin
geq
uilib
ratio
n.
Th~
C2O
4!2•
6H2O
was
prep
ared
bypr
ecip
itatio
nac
cord
ing
toR
ef.
4.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.V
.Ste
pano
van
dE
.M.P
azuk
hin,
Zh.
Neo
rg.K
him
.15
,148
3~1
970!
.2 P
hys
ico
-Ch
em
ica
lT
ab
les~
Pub
l.H
ouse
Tec
h.Li
tera
ture
,P
ragu
e,19
53!,
Vol
.1,
p.21
2.3 S
.B
.S
avvi
n,A
rse
na
zoII
I~A
tom
izda
t,M
osco
w,
1966!
~inR
ussi
an!,
p.10
7.4 D
.I.
Rya
bchi
kov
and
E.
K.
Gol
brai
kh,An
aly
tica
lCh
em
istr
yo
fT
ho
riu
m~P
ubl.
Hou
seA
cad.
Sci
.U
SS
R,
Mos
cow
,19
60!
~inR
ussi
an!,
p.33
.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 a A T Ad
Th
2 C2
the
S5
wh
ex the
lat
J
1.47
3.83
11.
341.
320
——
3.16
2.50
8B
1X
3.22
8.66
01.
481.
504
——
4.18
3.42
3B
1X
2.65
7.08
90.
890.
8996
——
4.85
3.95
1B
1D
2.86
7.65
41.
291.
305
——
4.29
3.49
7X
1X
1.22
3.15
80.
340.
3326
——
3.78
2.98
0D
1X
1.02
2.63
50.
490.
4783
——
3.62
2.84
8D
1X
1.14
2.91
30.
280.
2704
——
2.68
2.08
6D
1X
0.86
2.18
10.
040.
0383
——
2.44
1.88
4D
1E
1.63
4.14
4tr
aces
trac
es—
—2.
011.
557
D1
E5.
9616
.96
3.84
4.12
9—
—4.
073.
527
X0.
822.
142.
502.
448
——
2.09
1.64
9B
0.04
10.
1017
0.25
0.24
02—
—3.
322.
570
B—
—22
.70
27.5
00.
863.
196
——
A1C
——
22.9
327
.63
——
0.21
0.20
39A1B
1.59
4.13
9—
——
—4.
273.
385
B1D
2.09
5.35
4—
——
—2.
251.
755
C1E
0.73
2.33
822
.30
26.9
90.
451.
670
——
A1
B1
C
a ~A!
Na 2
CO
3•10
H2O
,@6
132-
02-1#
;~B
!N
a 2C
2O4,
@62-
76-0
#;~C
!N
a 6T
h~C
O3!
5•12
H2O
,@1
2386
-47-
9#;~D
!N
a 4T
h~C
2O4!
4•6H
2O,
@#;
~E!
Th~
C2O
4!2•
6H2O
,@1
6788
-62-
8#;~X
!un
iden
tified
solid
phas
e.b C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
hem
easu
rem
ents
wer
eca
rrie
dou
tst
irred
vess
els
equi
pped
with
anoi
lsea
ling.
Sta
rtin
gfr
omlu
tions
corr
espo
ndin
gto
inva
riant
poin
ts,
incr
easi
ngam
ount
sth
eth
irdco
mpo
nent
wer
ead
ded.
Equ
ilibr
ium
was
atta
ined
one
day
for
syst
ems
rich
inN
a2C
O3
or4
days
for
syst
ems
hin
sodi
umor
thor
ium
oxal
ates
.S
ampl
esof
the
satu
rate
dlu
tions
wer
ean
alyz
edfo
rox
alat
eco
nten
tw
ithK
MnO 4
atio
n,an
dgr
avim
etric
ally
for
CO 2
and
thor
ium
~as
ThO
2!.
dium
was
dete
rmin
edby
diffe
renc
e,in
som
eca
ses
also
avim
etric
ally
asN
a 2SO
4.C
ompo
sitio
nof
the
solid
phas
ess
inve
stig
ated
byth
em
etho
dof
wet
resi
dues
and
chec
ked
optic
alm
icro
scop
yan
dx-
ray
diffr
actio
n.
Th~
C2O
4!26
H2O
was
obta
ined
from
Th~N
O3!
4,its
sour
cean
dpu
rity
not
spec
ified
.F
orm
easu
rem
ents
with
thor
ium
carb
onat
eso
lidph
ases
,th
eso
lidus
edw
asN
a6T
h~C
O3!
5•12
H2O
,pr
epar
edac
cord
ing
toR
ef.
1.O
ther
chem
ical
sus
edw
ere
reag
ent
grad
epr
oduc
ts.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.I.
Che
rnya
ev,
V.
A.
Gol
ovni
a,an
dA
.K
.M
olod
kin,
Pro
ceed
ings
2nd
Inte
rnat
iona
lC
onfe
renc
eP
eace
ful
Use
sA
t.E
nerg
y,G
enev
a,19
58,
pp.
28,
203.
568568 JIRI HALA
4.9.
7.T
h„C
2O4…
2¿T
h„C
O3…
2¿N
a 2C
2O4¿
Na 2
CO
3¿H
2OS
yste
m
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
Th41
,Na1
i CO
322,C
2O422
2H
2O~1
!T
horiu
mbi
s~oxa
late!
;T
h~C
2O4!
2;@2
040-
52-0#
~2!
Tho
rium
carb
onat
e;T
h~CO
3!2;
@190
24-6
2-5#
~3!
Sod
ium
oxal
ate;
Na 2C
2O4;
@62-
76-0
#~4
!S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
~1!
Wat
er;
H 2O
;@7
732-
18-5#
I.S
.Kov
alev
aan
dN
.P.L
uzhn
aya,
Zh.
Neo
rg.K
him
.7,
1693
–8
~196
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
com
posi
tion
J.H
ala
Exp
erim
enta
lDat
aC
ompo
sitio
nof
solu
tions
satu
rate
dat
25°C
Th~
C2O
4!2
(100
w1
/m
ass
%)
Th~
C2O
4!2
(m1/1
03
mol
kg2
1 !b
Na 2
CO
3
(100
w4
/m
ass
%)
Na 2
CO
3
~m4/
102
mol
kg2
1 !b
Th~
CO
3!2
(100
w2
/m
ass
%)
Th~
CO
3!2
(m2
/mol
kg2
1 !b
Na 2
C2O
4
~100
w3
/m
ass
%)
Na 2
C2O
4
(m3/1
02
mol
kg2
1 !b
Sol
idph
asea
0.28
0.89
4122
.68
27.3
7—
——
—A1B
0.45
1.39
519
.86
23.2
60.
632.
263
——
B1
C0.
451.
394
19.8
223
.19
0.60
2.15
4—
—B
1C
1.06
3.08
614
.25
15.6
80.
531.
789
——
B1
C0.
982.
822
13.2
514
.42
0.67
2.23
6—
—B
1C
1.06
3.03
712
.70
13.7
50.
704
2.33
8—
—B
1C
1.10
3.12
912
.04
12.9
40.
704
2.32
1—
—B
1C
1.43
4.01
710
.52
11.1
70.
812.
637
——
B1
C1.
965.
466
9.96
10.5
00.
210.
6788
——
B1
C2.
988.
163
7.21
7.46
30.
351.
111
——
B1
C0.
982.
660
6.06
6.21
62.
688.
432
——
C6.
2818
.13
8.64
9.23
10.
391.
305
——
C1
X5.
9217
.08
8.44
9.20
20.
704
2.35
4—
—C
1X
4.53
12.8
17.
407.
907
1.41
4.62
2—
—C
1X
5.63
16.6
99.
4610
.60
2.25
7.73
2—
—C
1X
5.92
16.9
27.
828.
448
——
0.54
0.47
01B
1X
3.84
10.4
65.
305.
455
——
0.88
0.72
99B
1X
2.08
5.50
03.
053.
048
——
2.20
1.77
2B
1X
1.92
5.05
72.
692.
678
——
2.36
1.89
3B
1X
Me
Iso
in so of in ric so titr
So
gr wa
by
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.11
.T
horiu
mO
xobi
s„o
-hyd
roxy
benz
oate
…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
oxob
is~hy
drox
yben
zoat
e!;T
hO~C
7H5O
3!2;
@#
Am
mon
ium
hydr
oxyb
enzo
ate~s
alic
ylat
e!;N
H4~
C7H
5O3!
;# W
ater
;H 2
O;
@773
2-18
-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
2,12
8–
37~1
957!
.
riabl
es:
Pre
pare
dby
:
K:
293
–36
9/m
oldm
23 :
0–
1.76
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofT
hO~C
7H5O
3!2
inw
ater
and
inso
lutio
nsof
NH 4~
C7H
5O3!
atdi
ffere
ntte
mpe
ratu
res
a
mpe
ratu
re~
°C!
Th
~mg
dm2
3 !T
hO~C
7H5O
3!2
(106
c 1/m
oldm
23 !
bT
empe
ratu
re~
°C!
Th
~mg
dm2
3 !T
hO~C
7H5O
3!2
(106
c 1/m
oldm
23 !
b
Sol
ubili
tyof
ThO
~C7H
5O3!
2in
wat
eras
afu
nctio
nof
tem
pera
ture
200.
30.
415
701.
11.
5230
0.4
0.55
480
1.4
1.94
400.
50.
692
901.
72.
3550
0.7
0.96
996
2.6
3.60
600.
91.
25
pHT
h~m
gdm
23 !
ThO
~C7H
5O3!
2
(106
c 1/m
oldm
23 !
bpH
Th
~mg
dm2
3 !T
hO~C
7H5O
3!2
(106
c 1/m
oldm
23 !
b
Sol
ubili
tyof
ThO
~C7H
5O3!
2in
wat
eras
afu
nctio
nof
pHc
1.2
20.0
27.7
5.6
0.3
0.41
52.
23.
75.
126.
81.
11.
523.
01.
21.
667.
91.
31.
804.
20.
50.
692
8.5
1.2
1.66
4~C
7H5O
3!~g
dm2
3 !N
H4~
C7H
5O3!
(c2
/mol
dm2
3 !b
Th
~mg
dm2
3 !T
hO~C
7H5O
3!2
(106
c 1/m
oldm
23 !
NH
4~C
7H5O
3!~g
dm2
3 !N
H4~
C7H
5O3!
(c2
/mol
dm2
3 !b
Th
~mg
dm2
3 !
ThO
~C7H
5O3!
2
(106
c 1/
mol
dm2
3 !
Sol
ubili
tyat
30°C
ofT
hO~C
7H5O
3!2
inN
H4~
C7H
5O3!
solu
tions
d
00
1.4
1.94
500.
196
0.1
0.13
810
0.03
920.
10.
138
100
0.39
21.
41.
9420
0.07
840.
10.
138
200
0.78
41.
72.
3530
0.11
80.
10.
138
450
1.76
330
.241
.8
NH
4~C
7H5O
3!~g
dm2
3 !N
H4~
C7H
5O3!
(c2
/mol
dm2
3 !b
Th
~mg
dm2
3 !T
hO~C
7H5O
3!2
(106
c 1/m
oldm
23 !
NH
4~C
7H5O
3!~g
dm2
3 !N
H4~
C7H
5O3!
(c2
/mol
dm2
3 !b
Th
~mg
dm2
3 !
ThO
~C7H
5O3!
2
(106
c 1/
mol
dm2
3 !
Sol
ubili
tyat
96°C
ofT
hO~C
7H5O
3!2
inN
H4~
C7H
5O3!
solu
tions
d
00
2.6
3.60
600.
235
0.5
0.69
210
0.03
920.
20.
277
100
0.39
21.
82.
4920
0.07
840.
10.
138
150
0.58
83.
64.
9830
0.11
80.
10.
138
200
0.78
45.
47.
4840
0.15
70.
10.
138
250
0.98
07.
29.
9750
0.19
60.
20.
277
300
1.17
69.
012
.5
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
r.c pH
adju
sted
byad
ditio
nsof
HC
lor
NH 3so
lutio
ns.
d pH5
5;4
hst
irrin
g.
569569IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.10
.A
mm
oniu
mT
etra
kis
„ox
alat
o…th
orat
e
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Am
mon
ium
tetr
akis~o
xala
to!th
orat
e;~N
H4!
4Th~
C2O
4!4;
@#
~2!
Am
mon
ium
oxal
ate;
(NH 4!
2C2O
4;@1
113-
38-8#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
B.
Bra
uner
,J.
Che
m.
Soc
.73,
951
–85
~189
8!.
Var
iabl
es:
Pre
pare
dby
:
m2
/mol
kg2
1 :0.7
33J.
Ha´ la
Exp
erim
enta
lDat
aT
heso
lubi
lity
of(N
H 4! 4
Th~
C2O
4!4,
atun
spec
ified
room
tem
pera
ture
,was
dete
rmin
edto
be90
.3g
~NH
4!4T
h~C
2O4!
4•4H
2Oin
100
gw
ater
.T
heso
lutio
nal
soco
ntai
ned
9.3
g~N
H4!
2C2O
4pe
r10
0g
wat
ersi
nce
the
com
plex
salt
isun
stab
leto
war
dshy
drol
ysis
inpu
rew
ater
.T
heso
lubi
lity
was
calc
ulat
edby
the
auth
orfr
oman
alys
isof
one
sam
ple
~2.8
235
g!of
the
satu
rate
dso
lutio
nw
hich
prod
uced
are
sidu
eof
1.37
40g
ondr
ying
at10
5°C
,w
hich
furt
her
prod
uced
0.48
22g
ThO
2on
igni
tion.
Fro
mth
ese
data
the
com
pile
rca
lcul
ated
the
solu
bilit
yof
(NH
4!4T
h~C
2O4!
4to
be80
.464
g/10
0g
wat
er~1.2
26m
olkg
21 !
inth
epr
esen
ceof
90.9
7g~N
H4!
2C2O
4/k
gw
ater
~0.7
33m
olkg
21 !.
The
figur
e90
.3g
salt/
100
gw
ater
give
nby
the
auth
orob
viou
sly
refe
rsto
the
tetr
ahyd
rate
~89.
29g/
100
gw
ater
,co
mpi
ler
!.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
yw
asde
term
ined
byan
alyz
ing
the
satu
rate
dm
othe
rliq
uor
obta
ined
inth
eco
urse
ofth
epr
epar
atio
nof
(NH
4!4T
h~C
2O4!
4•4H
2O.
Tho
rium
was
dete
rmin
edgr
avim
etric
ally
asT
hO2.
Pur
eth
oriu
mox
alat
e,pr
epar
edfr
oma
thor
ium
prep
arat
ion
purifi
edfr
omla
ntha
nide
sby
prec
ipita
tion
ofth
eN
a/T
hsu
lfate
,w
ashe
ated
with
wat
erto
boili
ng,
and
amm
oniu
mox
alat
ew
asad
ded
until
half
ofth
eth
oriu
mox
alat
edi
ssol
ved.
Afte
rco
olin
g,th
eso
lutio
nw
asfil
tere
dan
dth
efil
tere
dco
ncen
trat
edun
til,w
hen
allo
wed
toco
ol,n
eedl
e-sh
aped
crys
tals
ofth
ete
trah
ydra
tebe
gan
tofo
rm.
Co
~1!
~2!
@ ~3!
Va
T/
c 2 Te
NH
J
4.12
.T
horiu
m„5-
nitr
o…B
arbi
tura
te
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tho
rium
tetr
akis
$~5-
nitr
o!ba
rbitu
rate%
;T
h~C
4H2N
3O5!
4or
6H8N
12O
20T
h;@
#W
ater
;H 2
O;
@773
2-18
-5#
M.
W.
Goh
een
and
R.
J.R
obin
son,
Ana
lyt.
Chi
m.
Act
a31
,17
5–
9~1
964!
.
riabl
es:
Pre
pare
dby
:
K:
297
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
inw
ater
ofth
oriu
mte
trak
is$~5-
nitr
o!ba
rbitu
rate%
isre
port
edto
be1.
4310
24
mol
dm2
3at
24°C
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
ssa
ltw
asst
irred
with
wat
erfo
rve
ralh
ours
,an
dth
enal
low
edto
stan
dfo
rse
vera
lday
sin
satu
rate
dso
lutio
n.A
nal
iquo
tof
the
satu
rate
dso
lutio
nw
asn
evap
orat
edby
wat
erpu
mp
desi
ccat
ion,
and
the
resi
due
sw
eigh
ed.
Th~
C4H
2N3O
5!4•
20H
2Ow
aspr
epar
edby
trea
ting
anaq
ueou
s0.
1m
oldm
23
Th~
NO
3!4
solu
tion
~rea
gent
grad
e,B
aker
and
Ada
mso
n!w
itha
stoi
chio
met
ricam
ount
of5-
nitr
obar
bitu
ricac
idin
the
form
of0.
05m
oldm
23
solu
tion
in50
%et
hano
l.T
hepr
ecip
itate
was
allo
wed
tost
and
for
1da
y,th
enit
was
filte
red
and
was
hed
with
wat
eran
d95
%et
hano
l.
ditio
nalI
nfor
mat
ion:
Exc
ept
for
the
wat
erof
crys
talli
zatio
n,co
mpo
sitio
nof
the
salt
was
not
repo
rted
inth
eor
igin
aldo
cum
ent.
Itw
asde
duce
dby
the
mpi
ler
from
the
repo
rted
ther
mog
ravi
met
riccu
rve
whi
chsh
owed
that
igni
tion
ofth
eai
r-dr
ied
hydr
ated
salt
toT
hO2
yiel
ded
are
sidu
e20
%of
the
initi
alsa
mpl
em
ass.
570570 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
of234 T
h-la
bele
dT
hO~C
7H5O
3!2
was
stirr
edfo
r1
–4
hw
ithth
eso
lutio
nsun
der
the
desi
red
cond
ition
s.In
mos
tca
ses,
1–
2h
stirr
ing
was
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
nan
aliq
uot
ofth
esa
tura
ted
solu
tion
was
with
draw
n,ev
apor
ated
,an
dth
eco
ncen
trat
ion
ofth
oriu
mw
asde
term
ined
bybco
untin
gof
234 T
hus
ing
aG
eige
rco
unte
r.
ThO
~C7H
5O3!
2la
bele
dw
ith23
4 Th
was
prep
ared
bypr
ecip
itatio
nof
ara
dioc
hem
ical
lypu
re,
boili
ngT
h~NO
3!4
solu
tion
with
salic
ylic
acid
atpH
4–
51in
the
pres
ence
ofU
O 2~N
O3!
2.T
hepr
ecip
itate
ofT
hO~C
7H5O
3!2
was
thor
ough
lyw
ashe
dw
ithw
ater
from
U~V
I!sa
licyl
ate,
and
repr
ecip
itate
d.T
heT
h/sa
licyl
ate
ratio
inth
epr
oduc
tw
as1:
2.S
peci
ficac
tivity
ofth
epr
oduc
tw
as10
4–
105
coun
tsm
g21
min
21 .
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
1,24
1~1
956!
.
Co
~1!
C1
~2!
Va
T/
Me
Iso
se the
the
wa
Ad
co of
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
r
Equ
ilibr
atio
ntim
ew
as36
hal
thou
gha
perio
dof
4–
6h
was
foun
das
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
satu
rate
dso
lutio
nsw
ere
filte
red,
and
the
cont
ent
of8-
hydr
oxoq
uino
linol
was
dete
rmin
edtit
rimet
rical
lyw
ithK
BrO 3
solu
tion.
For
each
HC
lcon
cent
ratio
n,5
–7
para
llele
xper
imen
tsw
ere
perf
orm
ed.
toav
oid
cont
amin
atio
nw
ith8-
hydr
oxoq
uino
line.
The
prod
uct
was
char
acte
rized
byel
emen
tal
anal
ysis
.C
alcu
late
d/fo
und
for
the
dihy
drat
e:T
h27
.49/
27.5
,8-
hydr
oxoq
uino
line
60.2
4/68
.0,
H2O
4.27
/4.5
,in
mas
s%
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:th
ere
port
edra
nge
of8-
hydr
oxoq
uino
linat
eco
ncen
trat
ion
sugg
ests
prec
isio
nof,
5%fo
rth
etit
rimet
ricm
etho
d.
Ref
eren
ces:
1 A.
E.
Kly
gina
and
N.
S.
Kol
yada
,Z
h.N
eorg
.K
him
.3,27
67~1
958!
.2 F
.J.
Wel
cher
,Org
an
icA
na
lytic
alR
ea
ge
nts~N
J,19
48!,
Vol
.1,
p.26
5.
4.14
.T
horiu
mP
htha
locy
anin
ate
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Bis
~pht
halo
cyan
inat
o!tho
rium
;C 6
4H32
N16
Th
or~C
32H
16N
8!2;
@125
81-7
8-1#
Sol
vent
s
P.N
.Mos
kale
v,G
.N.S
hapk
in,a
ndY
u.S
.Mis
ko,R
adio
khim
iya
20,
343
–4
~197
8!.
riabl
es:
Pre
pare
dby
:
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Th~
C32
H16
N8!
2in
two
solv
entsa
Sol
vent
Th~
C32
H16
N8!
2
~gdm
23 !
Th~
C32
H16
N8!
2
(104
c 1/m
oldm
23 )b
chlo
rona
phth
alen
e;C 10H
7Cl;
@90-
13-1
#0.
567.
52
nzen
e;C 6H
6;@7
1-43
-2#
0.03
90.
524
empe
ratu
reno
tsp
ecifi
ed.
The
solu
bilit
ies
wer
ere
port
edto
bein
depe
nden
tof
tem
pera
ture
over
the
rang
efr
om13
to50
°C.
alcu
late
dby
com
pile
r.
ditio
nalI
nfor
mat
ion:
eso
lubi
lity
ofT
h~C
32H
16N
8!2
indi
met
hylfo
rmam
ide~
C3H
7NO
,@6
8-12
-2#!
was
repo
rted
tobe
less
than
0.00
1g
dm2
3 .T
heco
mpo
und
sfo
und
topr
actic
ally
inso
lubl
ein
met
hano
l~C
H4O
,@6
7-56
-1#!
and
etha
nol~C
2H6O
,@6
4-17
-5#!
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
heso
lidw
aseq
uilib
rate
dw
ithth
esi
red
solv
ent
ingr
ound
glas
sst
oppe
red
cylin
ders
ina
rmos
tate
dba
thun
tileq
uilib
rium
was
atta
ined
.T
hesa
tura
ted
lutio
nsw
ere
filte
red
thro
ugh
agl
ass
filte
r,an
aliq
uot
was
uted
to;
102
5m
oldm
23
with
dim
ethy
lform
amid
ent
aini
ng1%
N 2H
4•H
2O,
and
the
conc
entr
atio
nof
thal
ocya
nine
was
dete
rmin
edsp
ectr
opho
tom
etric
ally
.
Th~
C32
H16
N8!
2w
aspr
epar
edac
cord
ing
toR
ef.
1.Its
chem
ical
com
posi
tion
and
purit
yw
asch
ecke
dby
chem
ical
anal
ysis
and
x-ra
ydi
ffrac
tion.
Rea
gent
grad
eso
lven
tsw
ere
used
with
out
furt
her
purifi
catio
n.
Est
imat
edE
rror
:S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 F.L
ux,D
.Dem
pf,a
ndD
.Gro
w,A
ngew
.Che
m.
80,7
92~1
968!
.
571571IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4.13
.T
horiu
m8-
Hyd
roxy
quin
olin
ate
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Tho
rium
tetr
akis~
8-hy
drox
oqui
nolin
ate!;
C24
H36
N4O
4Th
orT
h~C
6H9N
O! 4
;@1
8153
-67-
8#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#~4
!W
ater
;H 2
O;
@773
2-18
-5#
I.M
.K
oren
man
and
V.
V.
Kor
olik
hin,
Tru
dy.
Khi
m.
Khi
m.
Tek
hnol
.4,
304
–6
~196
1!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
001
–0.
025
(c21
c 3)/
mol
dm2
3 :0.
5
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
typr
oduc
tof
Th~C
6H9N
O! 4
in~H
1N
a!C
lsol
utio
nsat
ioni
cst
reng
thof
0.5
mol
dm23
and
25°C
a
HC
lb
(c2
/mol
dm2
3 )pH
c@R
# tot
d
(103
mol
dm2
3 )K
spe,
f
(1045
mol
5dm
215
)
0.00
104.
00.
57–
0.63
4.9
–8.
0
0.00
253.
81.
14–
1.25
6.6
–8.
6
0.00
53.
553.
0–
3.2
6.3
–8.
7
0.01
03.
45.
8–
5.9
11.4
–12
.5
0.02
53.
114
.0–
14.1
3.8
–3.
9
a Itw
asno
tst
ated
expl
icitl
yw
heth
erth
eeq
uilib
rium
solid
phas
ew
asth
ean
hydr
ous
salt
orth
edi
hydr
ate.
b Initi
alco
ncen
trat
ion.
c pHof
the
satu
rate
dso
lutio
ns.
d Tot
al8-
hydr
oxoq
uino
line
conc
entr
atio
nin
the
satu
rate
dso
lutio
n.U
sing
thes
eda
ta,
conc
entr
atio
nof
free
8-hy
drox
oqui
nolin
ate
anio
n,o
R2
,w
asca
lcul
ated
usin
gdi
ssoc
iatio
nco
nsta
nts
of8-
hydr
oxoq
uino
line,
K15
@H1
#@R
2#@
HR
#215
1.54
310
210
and
K25
@HR
#@H
1#
3@H
2R1
#215
9.61
310
26.1
e The
aver
age
valu
eofK
sp5
@Th41
#@R
2#4
was
repo
rted
tobe
(762
)310
245
mol
5dm
215
.In
divi
dual
Ksp
valu
esw
ere
obta
ined
assu
min
gth
eT
h41co
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
equa
lto
@R# t
ot/4
.f T
hera
nge
cove
rsth
ere
sults
ofpa
ralle
lmea
sure
men
ts.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Th
~C6H
9NO
! 4•2H
2Ow
assh
aken
with
the
solu
tions
ofth
ede
sire
dco
mpo
sitio
n.T
h~C
6H9N
O! 4•2H
2Ow
aspr
epar
edby
prec
ipita
tion
acco
rdin
gto
Ref
.2.T
hepr
ecip
itate
was
boile
dw
ithth
em
othe
rliq
uor
for
1h
Co
~1!
Th
~2!
Va
1- Be
a T b C Ad
Th
wa
Me
Iso
de the
so dil
co ph
J
f
3.0
13.9
460.
063
2976
210
00.
113
.896
0.11
4
2986
0.1
100
0.1
14.1
860.
035
298
100
0.1
13.2
960.
116
2956
110
00.
113
.356
0.14
7
014
.216
0.14
d7
2986
28
0.1
14.0
560.
098
014
.916
0.10
d8
2986
110
00.
114
.106
0.14
10
a Est
imat
edby
eval
uato
r.b O
verp
ress
ure
ofC
O 2of
0.1
–0.
2at
m.
c Con
cent
ratio
nun
itfo
rKsp
ism
oldm
26 .
d Ksp0
;ca
lcul
ated
byth
eau
thor
sfr
omth
eir
Ksp
valu
es.
The
data
obta
ined
for
ioni
cst
reng
thof
0.1
mol
dm23
are
gene
rally
ingo
odag
reem
ent
but
som
eun
cert
aint
yst
illpe
rsis
tsev
enth
ough
high
prec
isio
nso
lubi
lity
mea
sure
men
ts,
cond
ucte
das
pHtit
ratio
ns,
have
been
used
inth
em
ore
rece
ntst
udie
s.3
–8
Inth
ese
mea
sure
men
ts,
equi
libra
tion
time
ofse
vera
lwee
ksup
to6
mon
ths
was
used
toen
sure
atta
inm
ent
ofst
eady
stat
eat
pH,
6.5
whe
reth
eeq
uilib
rium
solid
phas
eis
UO 2
CO
3,th
eso
lidph
ases
wer
ech
arac
teriz
edco
ntin
uous
lydu
ring
the
expe
rimen
ts,
and
high
-pre
cisi
onpr
oced
ures
for
pHm
easu
rem
entw
ere
used
.In
som
eca
ses
the
mea
sure
men
tsw
ere
perf
orm
edst
artin
gfr
ombo
thun
ders
atur
ated
and
supe
rsat
urat
edso
lutio
ns.
Neg
lect
ing
min
ordi
ffere
nces
inte
mpe
ratu
reat
whi
chm
easu
rem
ents
wer
epe
rfor
med
,th
eva
lues
ofth
eso
lubi
lity
prod
uct
ofU
O2C
O3
repo
rted
for
0.1
mol
dm2
3N
aClO
4in
Ref
s.6,
7ag
ree
exce
llent
lybu
tar
eap
prox
imat
ely
five
times
high
erth
anth
etw
ova
lues
repo
rted
Ref
s.4,
5,8.
The
latte
rau
thor
sre
peat
edth
eir
mea
sure
men
tsre
port
edin
Ref
s.4,
5af
ter
seve
raly
ears
8w
ithex
celle
ntre
prod
ucib
ility
.e
reas
onfo
rth
isdi
ffere
nce
amon
gKsp
valu
esob
tain
edby
diffe
rent
auth
ors
isno
tcl
ear
sinc
ene
arly
iden
tical
expe
rimen
talc
ondi
tions
dpr
oced
ures
atpH,
6.5
wer
eus
edin
alls
tudi
es.
Itse
ems
likel
yth
atth
esc
atte
rin
the
solu
bilit
yda
tare
port
edin
indi
vidu
alst
udie
sis
eto
syst
emat
icer
rors
inhe
rent
toex
perim
enta
lpro
cedu
res
used
,an
dth
edi
ffere
nce
inK
spva
lues
then
,at
leas
tpa
rtly
,al
soto
the
choi
ceth
eaq
ueou
sU~V
I!sp
ecie
s~se
ebe
low!
cons
ider
edin
com
pute
rtr
eatm
ent
ofso
lubi
lity
data
.It
has
been
sugg
este
dre
cent
ly11
that
the
fere
nces
inth
eso
lubi
lity
enco
unte
red
inth
issy
stem
are
prob
ably
not
due
toth
esi
zeof
UO
2CO
3cr
ysta
lsor
todi
ffere
nces
inU
O 2CO
3
stal
linity
.N
eith
erar
eth
edi
ffere
nces
inso
lubi
lity
caus
edby
the
proc
edur
eus
edto
calc
ulat
eth
eeq
uilib
rium
carb
onat
eio
nco
ncen
tra-
n.T
hela
tter
isob
tain
edfr
omth
em
easu
red
pHan
da
set
ofC
O2
solu
tion
equi
libria
CO
2~g!
KH
�C
O2~
aq!
K*�
H2C
O3
Ka1
�H
CO
32
Ka2
�C
O322
log @
CO
322#5
log
K1
log
p~C
O2!
12
pH,
with
log
K5
log(
KHK
* Ka1
Ka2
).T
heco
nsta
ntK,
eith
erde
term
ined
byso
me
auth
ors
orta
ken
mlit
erat
ure
sour
ces,
show
sa
very
smal
lsca
tter
~2lo
gK
:17
.65,7
17.6
4,1217
.62,13
17.6
8,1417
.65;
15al
lin
0.1
mol
dm2
3N
aClO
4!.
Logi
cally
,si
mila
rsi
tuat
ion
isob
serv
edw
ithth
eKsp0
valu
es.
The
sew
ere
obta
ined
eith
erex
perim
enta
llyat
very
low
ioni
cst
reng
th,
1,2
calc
ulat
edfr
omth
eva
lues
obta
ined
athi
gher
ioni
cst
reng
ths
byap
plyi
ngsp
ecifi
cio
nin
tera
ctio
nth
eory
.3,
7,8
The
aver
age
valu
efr
omse
repo
rted
inR
efs.
1,2,
3,7
is102(1
4.26
0.2)
mol
2dm
26
with
som
ewha
thi
gher
valu
eob
tain
edin
Ref
.8.
Bas
edon
thes
eK
sp0va
lues
itn
beco
nclu
ded
that
the
valu
e10
210
.73m
ol2
dm2
6ob
tain
edea
rlier16
from
the
solu
bilit
yof
UO 2
~OH
! 2in
Na 2
CO
3so
lutio
nsis
erro
neou
s.T
here
isle
ssag
reem
ent
asto
the
equi
libriu
mU
~VI!
solu
tion
spec
ies
exis
ting
inth
eU
O2C
O3–
CO
2–
NaC
lO4–
H2O
and/
or
2CO
3–
CO
2–
H2O
syst
ems.
Whi
leai
min
gat
obta
inin
gth
ebe
stfit
ofth
eir
expe
rimen
tald
ata
with
am
odel
,th
eau
thor
sha
veco
nsid
ered
varie
tyof
spec
ies
and
thei
rco
mbi
natio
ns:
UO
221an
dU
O 2C
O3;
1U
O221
,U
O2O
H1
,U
O2~
OH
! 2,
and
U 2O
521;2
UO
221,
UO
2CO
3,
2~C
O3!
222,
UO
2~C
O3!
342,
and
~UO
2!3~
CO
3!662
;3U
O221
,U
O2C
O3,
UO
2~C
O3!
222,
and
UO 2
~CO
3!342
;9U
O2C
O3,
2~C
O3!
222,U
O2~
CO
3!32
4 ,~U
O2!
2~O
H! 221
,an
d~U
O2!
3~O
H! 61
;5U
O2C
O3,
UO
2~C
O3!
222an
dU
O 2~C
O3!
342.6
The
sesp
ecie
sco
ntrib
ute
toto
talU
~VI!
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsth
atar
ein
equi
libriu
mw
ithU
O2C
O3,
and
thei
rre
lativ
eim
port
ance
isde
pend
ent
pHan
d/or
@CO
322#.
Whi
leth
ere
isge
nera
lagr
eem
ent
inth
atth
een
hanc
edso
lubi
lity
ofU
O2C
O3
athi
gher
pHan
d/or @
CO
322#
valu
esca
used
byth
efo
rmat
ion
ofan
ioni
cca
rbon
atoc
ompl
exes
ofU
O221
,th
eim
port
ance
ofva
rious
hydr
olyz
edhy
drox
osp
ecie
sha
sno
tbe
enlv
edun
ambi
guou
sly.
Inth
isre
spec
tso
me
mor
ere
cent
stud
ies
8,10
have
brou
ght
abe
tter
insi
ght
into
the
prob
lem
byex
perim
enta
llyrif
ying
the
exis
tenc
eof
som
eof
the
solu
tion
spec
ies.
~The
UO 221
–C
O322
–O
H2
solu
tion
equi
libria
have
been
the
subj
ect
ofst
udy
inve
ral
mor
edo
cum
ents
whe
re,
how
ever
,so
lubi
lity
ofU
O2C
O3
has
not
been
stud
ied.
Con
sequ
ently
,su
chdo
cum
ents
have
not
been
lude
din
this
eval
uatio
n.!
fere
nces
:
.I.
Ser
geev
a,A
.A
.N
ikiti
n,I.
L.K
hoda
kovs
kii,
and
G.
B.
Nau
mov
,G
eokh
imiy
a13
40~1
972!
;G
eoch
em.
Inte
rnat9
,90
0~1
972!
.
.V
.P
irozh
kov
and
N.
M.
Nik
olae
va,
Izv.
Sib
irsk.
Otd
el.
Aka
d.N
auk
SS
SR
,S
er.
Khi
m.
5,55
~197
6!;
6,30
~197
6!.
Gre
nthe
,D
.F
erri,
F.
Sal
vato
re,
and
G.
Ric
cio,
J.C
hem
.S
oc.
Dal
ton
Tra
ns.
2439
~198
4!.
.M
einr
ath
and
T.
Kim
ura,
Inor
g.C
him
.A
cta20
4,79
~199
3!.
.M
einr
ath
and
T.
Kim
ura,
J.A
lloys
Com
pds20
2,89
~199
3!.
.K
ram
er-S
chna
bel,
H.
Bis
chof
f,R
.H
.X
i,an
dG
.M
arx,
Rad
ioch
im.
Act
a56
,18
3~1
992!
.
Pas
halid
is,
W.
Run
de,
and
J.I.
Kim
,R
adio
chim
.A
cta
61,
141
~199
3!.
.M
einr
ath,
Y.
Kat
o,T
.K
imur
a,an
dZ
.Y
oshi
da,
Rad
ioch
im.
Act
a75
,15
9~1
996!
.
Pas
halid
is,
K.
R.
Cze
rwin
ski,
F.
Fan
ghan
el,
and
J.I.
Kim
,R
adio
chim
.A
cta
76,
55~1
997!
.
.K
ato,
T.
Kim
ura,
Z.
Yos
hida
,an
dN
.N
itani
,R
adio
chim
.A
cta74,
21~1
996!
.
G.
Mei
nrat
h,Y
.K
ato,
T.
Kim
ura,
and
Z.
Yos
hida
,R
adio
chim
.A
cta
84,
21~1
999!
.12
R.
M.
Sm
ithan
dA
.E
.M
arte
ll,Critic
alS
tab
ility
Co
nst
an
ts~P
lenu
m,
New
Yor
k,19
76!,
Vol
.4.
13G
.M
einr
ath
and
J.I.
Kim
,R
adio
chim
Act
a52Õ5
3,29
~199
1!.
14L.
May
a,In
org.
Che
m.21
,28
95~1
982!
.15
W.
Run
de,
G.
Mei
nrat
h,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a58
Õ59,
93~1
992!
.16
A.
K.
Bab
koan
dV
.S
.K
aden
skay
a,Z
h.N
eorg
.K
him
.5,
2568
~196
0!.
572572 JIRI HALA
5.T
heS
olub
ility
ofU
rani
umC
ompo
unds
5.1.
Ura
nium
Dio
xoC
arbo
nate
5.1.
1.E
valu
atio
nof
the
UO
2CO
3–
CO
32–
Na 2
CO
3–
H2O
Sys
tem
Com
pone
nts:
Eva
luat
or:
~1!
Ura
nium
~VI!
diox
oca
rbon
ate;
UO 2C
O3;
@122
74-9
5-2#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
Gre
atat
tent
ion
has
been
paid
toth
eso
lubi
lity
ofU
O2C
O3,
and
also
ofU
O 3•xH
2O,
due
toth
eim
port
ance
ofso
lid/li
quid
equi
libria
ofth
ese
com
poun
dsin
rela
tion
toec
olog
ical
risk
pote
ntia
lst
emm
ing
from
uran
ium
min
es,
mill
taili
ngs,
and
rock
pile
s,an
dto
tran
sfer
our
aniu
mfr
omth
ese
faci
litie
sin
toth
ebi
osph
ere.
Sol
ubili
tyof
UO
2CO
3in
wat
eror
inaq
ueou
sso
lutio
nsis
not
acce
ssib
leto
expe
rimen
tal
mea
sure
men
tsat
norm
alat
mos
pher
icco
nditi
ons,
i.e.,
atpa
rtia
lpr
essu
reof
CO
2of
0.03
%,
sinc
eU
O 2CO
3is
ther
mod
ynam
ical
lyst
able
only
athi
gher
part
ialp
ress
ures
ofC
O2.
~At
part
ialp
ress
ure
ofC
O 2,1
%,U
O3•
xH2O
isth
eth
erm
odyn
amic
ally
stab
leph
ase.
8 !T
here
fore
the
solu
bilit
yof
UO 2
CO
3ha
sbe
enm
easu
red
inth
eU
O2C
O3–
CO
2–
H2O
and
UO 2
CO
3–
CO
2–
NaC
lO4–
H2O
syst
ems
unde
rhi
gher
part
ial
pres
sure
sof
CO 2
orin
the
atm
osph
ere
ofpu
reC
O2.
Sev
eral
sets
ofda
taar
eav
aila
ble
for
the
solu
bilit
yof
UO
2CO
3in
thes
esy
stem
s.S
ome
auth
ors1
–3,
5–
7,9re
port
ednu
mer
ical
data
whi
leot
hers
8,10
publ
ishe
dth
eir
data
ingr
aphi
cal
form
orre
port
edth
eso
lubi
lity
prod
uct
ofU
O2C
O3
only
.4T
here
isge
nera
lagr
eem
ent
amon
gth
epu
blis
hed
data
inth
atth
eso
lubi
lity
ofU
O2C
O3
isat
itsm
inim
um,
and
cons
tant
,at
appr
oxim
atel
y102
8.3 –
102
7.0
mol
dm2
3eq
uilib
rium
carb
onat
eio
nco
ncen
trat
ion.
5,6,
9W
ithin
this
@CO
322#
inte
rval
,th
eso
lubi
lity
ofU
O2C
O3
has
been
repo
rted
tobe
betw
een
102
4.2
102
4.6~R
efs.
6,9!
orap
prox
imat
ely
1025.
0~R
ef.5
!m
oldm
23 ,w
ithra
ther
ala
rge
scat
ter
ofso
lubi
lity
data
inso
me
stud
ies.
At
low
eror
high
er @CO
322#
valu
esth
eso
lubi
lity
ofU
O 2CO
3in
crea
ses.
At
low
erC
O 322co
ncen
trat
ions
,pa
rtic
ular
lyin
acid
icso
lutio
ns,
the
enha
nced
solu
bilit
yis
caus
edby
the
actio
nof
H3O
1io
non
UO 2
CO
3w
hile
the
form
atio
nof
anio
nic
carb
onat
ocom
plex
esof
U~VI!
inth
esa
tura
ted
solu
tions
isre
spon
sibl
eat
high
erC
O322
conc
entr
atio
ns.
Inne
arly
all
stud
ies
the
auth
ors
com
pute
rfit
ted
thei
rex
perim
enta
ldat
aw
ithm
odel
sco
nsid
erin
gU
O2C
O3
asth
eso
lidph
ase
and
vario
usU
~VI!
solu
tion
spec
ies,
with
the
aim
atca
lcul
atin
gth
eso
lubi
lity
prod
uct
ofU
O 2CO
3an
deq
uilib
rium
orst
abili
tyco
nsta
nts
ofva
rious
aque
ous
U~V
I!sp
ecie
s.T
heta
ble
sum
mar
izes
the
avai
labl
eva
lues
for
the
solu
bilit
ypr
oduc
tof
UO
2CO
3at
orcl
ose
to29
8.1
K.
T/K
p2/%
NaC
lO4
(c3
/mol
dm2
3 )2
log
Ksp
cR
efer
ence
2986
0.5
100
,0.
02a
14.2
51
2986
0.1
110
–12
0b0
14.0
560.
082
2986
0.02
9–
980
14.46
0.1d
3
0.5
13.2
160.
063
in Th
an du of dif
cry
tio as fro
or tho
ca UO
a UO
UO
the
on is so ve se inc
Re
1 E 2 A 3 I. 4 G 5 G 6 U 7 I. 8 G 9 I. 10Y
11
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
atpH
4.4
–5.
3:U
O 2C
O3~
s!�
UO
2CO
3~aq
!,w
itheq
uilib
rium
cons
tant
of(4
.16
0.7)
310
25,
(4.3
60.
3)3
102
5,
4.53
102
5,
4.63
102
5,
and
6.13
102
5at
25,
50,
100,
150,
and
200
°C,
resp
ectiv
ely,
atpH
.5.
3:U
O2C
O3~
s!1
CO
2~g!
1H
2O�
UO
2~C
O3!
2~aq
!22
12H
~aq!
1,
with
equi
libriu
mco
nsta
ntof
(2.2
60.
7)3
102
16an
d(1
.060.
5)3
102
16at
25an
d50
°C,
resp
ectiv
ely.
All
equi
libriu
mco
nsta
nts
refe
rto
zero
ioni
cst
reng
th.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
ither
UO
2CO
3or
UO
2~O
H! 2
wer
eed
asth
est
artin
gso
lid.
To
atta
inth
efin
alde
sire
dui
libriu
mpH
,sm
alla
liquo
tsof
dilu
teH
ClO 4
orN
aHC
O 3lu
tion
wer
ead
ded
toth
est
artin
gsl
urry
ofth
eso
lid.
Inpe
rimen
tsat
25an
d50
°Cth
eso
lutio
nsco
ntai
ning
exce
sslid
wer
eeq
uilib
rate
din
vess
els
equi
pped
with
elec
trod
esan
dgl
ass
filte
r,1by
pass
ing
thro
ugh
them
ast
ream
ofpu
rified
2at
CO 2
pres
sure
of1
atm
.T
hega
sw
aspr
esat
urat
edw
ithte
rva
por.
The
equi
libra
tion
time
rang
edfr
om17
to79
days
25°C
orfr
om9
to31
days
at50
°C.
The
atta
inm
ent
ofui
libriu
mw
asch
ecke
dby
uran
ium
and
pHde
term
inat
ion.
esa
tura
ted
solu
tions
wer
eal
low
edto
stan
dfo
r2
–14
days
fore
taki
ngsa
mpl
esfo
ran
alys
is.
Exp
erim
ents
athi
gher
pera
ture
sw
ere
carr
ied
out
ina
stee
laut
ocla
ve1
elec
tric
ally
ated
inan
alum
inum
bloc
k.T
hete
mpe
ratu
rew
asch
ecke
dth
ther
moc
oupl
es.
Afte
req
uilib
ratio
n,th
eau
tocl
ave
was
pidl
yco
oled
with
wat
er,
sam
ples
wer
ew
ithdr
awn
with
arin
gean
dul
trac
entr
ifuge
d.pH
was
mea
sure
dw
itha
glas
sct
rode
unde
rco
ntin
uous
stre
amof
CO
2.T
heco
ncen
trat
ion
uran
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edlo
rimet
rical
lyw
ithar
sena
zoIII
.T
heco
mpo
sitio
nof
the
uilib
rium
solid
phas
esw
asch
ecke
dby
x-ra
ydi
ffrac
tion.
UO
2CO
3w
aspr
epar
edby
pass
ing
CO
2ga
sth
roug
ha
slur
ryof
UO
2~O
H! 2
.2T
hela
tter
was
prep
ared
from
UO
2~N
O3!
2by
eith
erca
rbon
ate3
orpe
roxi
dem
etho
d.D
oubl
ydi
still
edw
ater
was
used
.N
aHC
O 3an
dH
ClO
4w
ere
reag
ent
grad
epr
oduc
ts.
Est
imat
edE
rror
:T
empe
ratu
re:p
reci
sion6
0.5
Kat
298
and
323
K;6
2.5
Kat
373
Kan
dab
ove~
auth
ors!.
pH:
prec
isio
n60.
04pH
unit
at29
8K
;60.
3pH
unit
at32
3K
~aut
hors!
.
Ref
eren
ces:
1 A.
A.
Nik
itin,
E.
I.S
erge
eva,
I.L.
Kho
dako
vski
i,an
dG
.B
.N
aum
ov,
Geo
khim
iya
297~1
972!
.2 I.
I.C
hern
yaye
v,V
.A
.G
olov
nya,
and
G.
V.
Elle
rt,
Zh.
Neo
rg.
Khi
m.
127
26~1
956!
.3 R
.W
ey,
I.La
uffe
nbur
ger,
and
D.
Sae
hr,
Bul
l.S
oc.
Chi
m.
Fra
nce
1874
~196
8!.
573573IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!W
ater
;H 2
O;
@773
2-18
-5#
E.
I.S
erge
eva,
A.
A.
Nik
itin,
I.L.
Kho
dako
vski
i,an
dG
.B
.N
aum
ov,
Geo
khim
iya
1340
–50~
1972
!;G
eoch
em.
Inte
rnat
.9,90
0~1
972!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
–47
3p
2~p
ress
ure
ofC
O 2!/a
tmos
pher
e51
(9.8
1310
4P
a)at
25an
d50
°CpH
:3.
2–
6.2
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2CO
3in
wat
erat
part
ialp
ress
ure
ofC
O2
of1
atm
asa
func
tion
ofte
mpe
ratu
rea
Tem
pera
ture
~°C
!pH
UO
2CO
3
(105
m1
/mol
kg2
1 )T
empe
ratu
re~°
C!
pHU
O2C
O3
(105
m1
/mol
kg2
1 )
253.
2225
3.0
503.
4712
0.0
4.09
17.1
4.88
4.20
4.33
6.30
5.04
4.50
4.44
4.31
5.20
4.22
4.66
4.83
5.28
5.32
4.87
5.71
6.02
13.0
5.07
5.36
6.16
70.0
5.22
4.29
5.31
5.17
100b
4.10
4.47
5.55
9.9
150b
4.05
4.58
5.83
14.4
200b
3.95
6.09
6.23
100.
0
a Equ
ilibr
ium
solid
phas
ew
asU
O 2CO
3,@1
2274
-95-
2#,in
alls
olut
ions
.b P
ress
ure
ofC
O 2no
tsp
ecifi
ed.
Add
ition
alIn
form
atio
n:T
hede
pend
ence
ofth
eU
O2C
O3
solu
bilit
yon
pH,
ata
cons
tant
tem
pera
ture
,w
asin
terp
rete
dby
the
auth
ors
byas
sum
ing
the
follo
win
geq
uilib
ria:
atpH
,4.
4:U
O2C
O3~
s!1
2H~a
q!1�
UO
2~aq
!21
1C
O2~
g!1
H2O
,w
itheq
uilib
rium
cons
tant
of(8
.06
4.0)
310
3at
25°C
and
4.453
103
at50
°C,
Me
Iso
us eq so ex so a CO
wa
at eq Th
be tem
he wi
ra sy ele
of co eq
J
re.
and
the
stab
ility
cons
tant
ofth
eU
O2C
O3
com
plex
inth
eso
lutio
nw
ere
calc
ulat
edby
the
auth
ors
asa
func
tion
ofte
mpe
ratu
re.
The
leas
tsq
uare
str
eatm
ent
ofth
eda
tayi
elde
dfo
rth
eth
erm
odyn
amic
stab
ility
cons
tant
~act
ivity
ofio
nsco
nsid
ered
tobe
equa
lto
conc
entr
atio
nssi
nce
the
satu
rate
dso
lutio
nsw
ere
extr
emel
ydi
lute
d,io
nic
stre
ngth
was
<3
310
24
mol
dm2
3 !b
5@U
O2C
O3#
@UO
221#2
1 @C
O322
#21 ,
the
equa
tion
log
b5
28.
9881
0.04
053T
162
1959
.1/T
2
and
for
the
ther
mod
ynam
icso
lubi
lity
prod
uct
ofU
O2C
O3
2lo
gK
s005
15.0
4–
0.01
756T
15.
0269
310
25T
2
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
hem
easu
rem
ents
wer
eco
nduc
ted
inte
flon
auto
clav
e.1S
lurr
yof
UO
2CO
3in
wat
erw
asfir
stui
libra
ted
bypa
ssin
gth
roug
hit
ast
ream
ofC
O2
gas
for
2h
room
tem
pera
ture
atat
mos
pher
icpr
essu
re.
The
nan
erpr
essu
reof
CO 2
of0.
1–
0.2
atm
was
appl
ied,
and
the
xtur
ew
ashe
ated
atth
ede
sire
dte
mpe
ratu
reun
der
ntin
uous
mix
ing
for
seve
rald
ays.
Atta
inm
ent
ofeq
uilib
rium
sch
ecke
dby
mea
surin
gpH
and
CO
2pr
essu
reun
tilco
nsta
ntlu
esw
ere
obta
ined
.T
hen
two
sam
ples
ofth
esa
tura
ted
lutio
nw
ere
with
draw
nby
mea
nsof
teflo
nfil
ters
plac
edid
eth
eau
tocl
ave
tode
term
ine
uran
ium
ectr
opho
tom
etric
ally
with
arse
nazo
I2
and
CO 2
avim
etric
ally
.S
olid
phas
esw
ere
not
inve
stig
ated
.T
hepH
ofsa
tura
ted
solu
tions
was
mea
sure
dat
the
desi
red
pera
ture
inth
epr
esen
ceof
solid
UO
2CO
3w
itha
high
pera
ture
glas
sel
ectr
ode.
UO
2CO
3w
aspr
epar
edby
prol
onge
dpa
ssin
gth
roug
ha
slur
ryof
UO
3~r
eage
ntgr
ade!
indo
ubly
dist
illed
wat
era
stre
amof
purifi
edC
O 2ga
s.3A
naly
sis
ofth
epr
oduc
tyi
elde
dre
sults
whi
chag
reed
with
in6
0.1%
with
the
form
ula
UO 2C
O3.
Pur
ified
CO 2
and
doub
lydi
still
edw
ater
wer
eus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.pH
:pr
ecis
ion6
0.02
pHun
it~au
thor
s!.U
rani
umco
ncen
trat
ion:
prec
isio
n63%
~aut
hors!
.C
O2
conc
entr
atio
n:pr
ecis
ion6
0.1%
~aut
hors!
.
Ref
eren
ces:
1 A.
V.
Piro
zhko
v,Iz
v.S
ibirs
k.O
tdel
.A
kad.
Nau
kS
SS
R,
Ser
.K
him
.4,
153
~197
6!.
2 An
aly
tica
lC
he
mis
try
of
Ura
niu
m~in
Rus
sian
!,ed
ited
byD
.I.
Rya
bchi
kov
and
M.
M.
Sen
yavi
n~Nau
ka,
Mos
cow
,19
62!,
p.13
2.3 I.
I.C
hern
yaye
v,V
.A
.G
olov
nya,
and
G.
V.
Elle
rt,
Zh.
Neo
rg.
Khi
m.
1,27
26~1
956!
.
574574 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!W
ater
;H 2
O;
@773
2-18
-5#
A.V
.Piro
zhko
van
dN
.M.N
ikol
aeva
,Izv
.Sib
irsk.
Otd
el.A
kad.
Nau
kS
SS
R,
Ser
.K
him
.5,55
–9
~197
6!N
.M
.N
ikol
aeva
,ibid
.6,
30–
1~1
976!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
–42
3J.
Ha´ la
Exp
erim
enta
lDat
aS
olub
ility
ofU
O2C
O3
inw
ater
inth
epr
esen
ceof
CO 2as
afu
nctio
nof
tem
pera
turea,b
Tem
pera
ture
~°C
!C
O2c
(102
mol
dm2
3 )pH
U(1
05m
oldm
23 )
UO
2CO
3d
(c1/1
05m
oldm
23 )
2lo
gK
s0e
2lo
gK
s0f
254.
322
4.06
17.2
210
.238
14.0
314
.30
14.0
56
0.08
14.1
214
.15
502.
925
3.95
3.23
1.48
4014
.74
14.8
114
.84
60.
06
14.8
414
.95
752.
384.
003.
421.
4930
14.9
915
.02
15.0
46
0.04
15.1
0
100
2.52
4.07
6.75
2.47
5015
.30
15.1
715
.22
60.
05
15.2
0
125
1.98
4.18
4.89
1.08
8016
.22
16.0
916
.14
60.
04
16.1
116
.15
150
0.29
44.
694.
640.
0674
817
.05
17.8
3g
a Sol
idph
ases
wer
eno
tin
vest
igat
ed.
Sin
ceth
em
easu
rem
ents
wer
epe
rfor
med
inan
atm
osph
ere
unde
rC
O2
over
pres
sure
the
com
pile
ras
sum
es,
base
don
othe
rpu
blis
hed
data
,th
atth
eeq
uilib
rium
solid
phas
ew
asU
O2C
O3,
@122
74-9
5-2#,
inal
lsol
utio
ns.
b The
auth
ors
repo
rted
only
one
mea
sure
men
tar
bitr
arily
chos
enou
tof
thre
eto
four
mea
sure
men
tsca
rrie
dou
tat
each
tem
pera
tuH
owev
er,
allt
heca
lcul
ated
valu
esof
solu
bilit
ypr
oduc
tw
ere
repo
rted
.c T
otal
CO 2
conc
entr
atio
n,i.e
.th
esu
mof
the
conc
entr
atio
nsof
CO
2,H
2CO
3,H
CO
32,
and
CO 322
,D
eter
min
edgr
avim
etric
ally
.d @U
O2C
O3#
5to
talc
once
ntra
tion
ofur
aniu
m2~@
UO
2211
@UO
2~O
H!1
#1@U
O2~
OH
! 2#1
2@U
2O521
#!.
e Cal
cula
ted
byth
eau
thor
sfr
omin
divi
dual
mea
sure
men
ts.
f Ave
rage
valu
e.g N
otca
lcul
ated
beca
use
at15
0°C
UO
2CO
3hy
drol
yzed
alm
ost
com
plet
ely
toU
O 2~O
H! 2
whi
chre
sulte
din
inco
nsis
tentK
s0va
lues
.
Add
ition
alIn
form
atio
n:U
sing
liter
atur
eda
tafo
rth
eeq
uilib
rium
cons
tant
sof
hydr
olyt
iceq
uilib
riaof
the
UO
221io
nan
ddi
ssoc
iatio
nco
nsta
nts
ofH
2CO
3,th
eco
ncen
trat
ion
ofth
eU
O 221,
UO
2~O
H!1
,U
O2~
OH
! 2,
and
U 2O
521sp
ecie
sw
ere
calc
ulat
ed,a
ndfr
omth
ese
the
solu
bilit
ypr
oduc
tofU
O2C
O3
Me
Iso
a eq at ov mi
co wa
va so ins
sp gr the
tem
tem
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Con
cent
ratio
nof
uran
ium
inm
oldm
.d C
once
ntra
tion
ofN
aClO 4
50.
5m
oldm
23 .
e Con
cent
ratio
nof
NaC
lO 45
3.0
mol
dm2
3 .
Add
ition
alIn
form
atio
n:T
heva
riatio
nof
UO 2
CO
3so
lubi
lity
with
hydr
ogen
ion
conc
entr
atio
nan
dC
O2
pres
sure
was
inte
rpre
ted
byth
eau
thor
sas
bein
gdu
eto
the
form
atio
nof
(UO 2
) p~C
O3!
t2(p
2t)
com
plex
spec
ies
inth
esa
tura
ted
solu
tions
.B
yco
mbi
ning
the
solu
bilit
ym
easu
rem
ents
with
addi
tiona
lch
emic
alin
form
atio
nfr
omth
est
udie
sof
hom
ogen
eous
equi
libria
inth
eU
~VI!
–C
O2–
H2O
syst
em1,
2th
eso
lubi
lity
prod
uct
ofU
O 2C
O3
and
the
over
alls
tabi
lity
cons
tant
sof
the
com
plex
esfo
rmed
at25
°Cw
ere
obta
ined
:
3.0
mol
dm2
3N
aClO
40.
5m
oldm
23
NaC
lO4
Wat
er
CO
2~g!
1H
2O�
CO
3221
2H1
;lo
gK
a2:
217
.616
0.03
217
.156
0.03
218
.106
0.05
UO
2CO
3~s!�
UO
2211
CO
322;
log
Ksp
:2
13.9
460.
062
13.2
160.
062
14.4
60.
1
UO
2211
CO
322�
UO
2CO
3~aq
!;lo
gb
1,1:
8.36
0.1
8.36
0.1
9.56
0.2
UO
2211
2CO
322�
UO
2~C
O3!
222;
log
b2,
1:
16.2
060.
1515
.366
0.15
16.66
0.2
UO
2211
3CO
322�
UO
2~C
O3!
342;
log
b3,
1:
22.6
160.
1521
.466
0.15
21.36
0.2
3UO
2211
6CO
322�
~UO
2!3~
CO
3!662
;lo
gb
6,3:
56.2
60.
353
.760.
353
.460.
8
The
cons
tant
sgi
ven
for
wat
erw
ere
obta
ined
byth
eau
thor
sby
usin
gsp
ecifi
cio
n–
inte
ract
ion
theo
ry.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
heso
lubi
lity
ofU
O2C
O3
was
asur
edas
afu
nctio
nof
the
part
ialp
ress
ure
ofC
O2
and
H1
conc
entr
atio
n.T
hrou
ghin
itial~
Na1
H!C
lO4
solu
tions
ofns
tant
ioni
cst
reng
tha
stre
amof
CO
2/N
2ga
sm
ixtu
rew
asss
edan
dth
ede
sire
dco
ncen
trat
ion
ofH
1io
nw
asac
hiev
edco
ulom
etric
gene
ratio
nof
OH2
orH
1io
ns.
The
nex
cess
2CO
3w
asad
ded,
the
mix
ture
was
cont
inuo
usly
stirr
edun
tilui
libriu
mw
asat
tain
edw
hich
was
indi
cate
dw
hen
the
tent
ialo
fth
egl
ass
elec
trod
ere
mai
ned
cons
tant
with
in0.
2du
ring
seve
rald
ays.
The
nth
eto
talc
once
ntra
tion
ofan
ium
inth
esa
tura
ted
solu
tion
was
dete
rmin
edec
trop
hoto
met
rical
lyus
ing
the
thio
cyan
ate
met
hod.
3T
hert
ialp
ress
ure
ofC
O 2w
asca
lcul
ated
from
the
know
nm
posi
tion
ofth
ega
sm
ixtu
re,
the
mea
sure
dat
mos
pher
ices
sure
and
the
vapo
rpr
essu
reof
wat
erov
era
solu
tion
ntai
ning
the
resp
ectiv
eco
ncen
trat
ion
ofN
aClO
4.T
hefr
eeio
nco
ncen
trat
ion
was
dete
rmin
edby
the
auth
ors’
met
hod
1
ing
agl
ass
elec
trod
e.A
llm
easu
rem
ents
wer
eca
rrie
dou
tin
ther
mos
tate
dap
para
tus.
4T
hepr
essu
rew
asm
easu
red
with
azo
resi
stiv
etr
ansd
ucer
.T
heco
mpo
sitio
nof
the
solid
phas
eseq
uilib
rium
with
the
solu
tions
was
chec
ked
byx-
ray
pow
der
otog
raph
y.N
och
ange
sof
the
initi
also
lidw
ere
obse
rved
oneq
uilib
ratio
n.
UO
2CO
3w
aspr
ecip
itate
dfr
omU
O 2~N
O3!
2so
lutio
nsa
tura
ted
with
CO
2ga
s,by
drop
wis
ead
ding
aso
lutio
nof
NaH
CO
3.T
heso
lidw
asst
irred
unde
rth
em
othe
rliq
uor
ina
CO
2at
mos
pher
ein
orde
rto
avoi
dlo
sses
ofC
O 2,ce
ntrif
uged
,an
dw
ashe
dw
ithN
aClO
4so
lutio
nof
the
resp
ectiv
eco
ncen
trat
ion
satu
rate
dw
ithC
O2.
The
com
posi
tion
ofU
O 2CO
3w
asco
nfirm
edby
elem
enta
lan
alys
isan
dx-
ray
diffr
actio
n.C
omm
erci
ally
avai
labl
eC
O2
/N2
mix
ture
sw
ere
used
.T
hega
ses
wer
epu
rified
bypa
ssin
gth
emth
roug
ha
H 2S
O4
/NaC
lO4
solu
tion
and
aG
4gl
ass
filte
r.P
erch
loric
acid
~Mer
ck!
was
are
agen
tgr
ade
prod
uct.
NaC
lO4
was
prep
ared
acco
rdin
gto
Ref
.5.
The
solu
tion
was
mad
eto
cont
ain
abou
t102
3m
oldm
23
H1
.
Est
imat
edE
rror
:P
ress
ure:
prec
isio
n65.
102
4at
m~a
utho
rs!.
Tem
pera
ture
:pr
ecis
ion6
0.02
K~a
utho
rs!.
H1
conc
entr
atio
n:pr
ecis
ion6
0.02
mV
~aut
hors!
.
Ref
eren
ces:
1 L.C
iava
tta,D
.Fer
ri,I.
Gre
nthe
,and
F.S
alva
tore
,Ino
rg.C
hem
.20
,46
3~1
981!
.2 D
.F
erri,
I.G
rent
he,
and
F.
Sal
vato
re,
Act
aC
hem
.S
cand
.35
A,
165
~198
1!.
3 S.
Ahr
land
,S
vens
k.K
em.
Tid
skr.72
,75
7~1
960!
.4 L.
Cia
vatta
,D
.F
erri,
I.G
rent
he,
F.
Sal
vato
rean
dK
.S
pahi
u,In
org.
Che
m.2
2,20
88~1
983!
.5 G
.B
iede
rman
n,A
rk.
Kem
i9,27
7~1
956!
.
575575IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
~2!
Car
bon
diox
ide;
CO 2
;@1
24-3
8-9#
~3!
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#~4
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~5
!W
ater
;H 2
O;
@773
2-18
-5#
I.G
rent
he,
D.
Fer
ri,F
.S
alva
tore
,an
dG
.R
icci
o,J.
Che
m.
Soc
.D
alto
nT
rans
.24
39–
43~1
984!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
p2
/atm
osph
ere5
0.04
77–
0.97
97H
1io
nco
ncen
trat
ion/
mol
dm2
35
53
102
7–
3.23
102
4
c 4/m
oldm
23 5
0.5
and
3.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU
O 2C
O3
inN
aClO
4so
lutio
nsa
2lo
g @H
1#b
CO
2
~p2/
atm
!2
log
Cuc,
d2
log @
H1
#bC
O2
~p2/
atm
!2
log
Cuc,
e
3.98
00.
0983
2.93
83.
841
0.09
752.
976
4.62
90.
0974
4.18
14.
066
0.09
843.
458
5.24
60.
0982
4.72
46.
215
0.09
703.
234
5.91
80.
0981
3.80
76.
303
0.09
782.
921
6.17
50.
0987
2.67
63.
621
0.29
092.
987
3.75
30.
2900
2.97
64.
406
0.28
634.
427
4.34
90.
2844
4.04
24.
981
0.29
104.
928
4.82
60.
2932
4.65
35.
916
0.28
873.
554
5.50
10.
2932
4.22
46.
014
0.29
173.
122
5.88
50.
2917
2.93
76.
210
0.47
73.
887
3.49
10.
9797
3.01
53.
568
0.97
684.
084
5.00
80.
9666
4.63
83.
621
0.97
133.
570
5.49
60.
9742
3.56
04.
113
0.96
584.
372
4.62
50.
9577
4.89
3
5.18
00.
9599
4.07
3
5.65
20.
9758
3.50
5
a Equ
ilibr
ium
solid
phas
ew
asU
O 2CO
3,@1
2274
-95-
2#,in
alls
olut
ions
.b F
ree
hydr
ogen
ion
conc
entr
atio
n.c
23
Me
Iso
me
ion
co pa by UO
eq po mV
ur sp pa co pr co H1
us a pie
in ph up
J
y
know
nco
ncen
trat
ions
.S
ampl
esof
satu
rate
dso
lutio
nsw
ere
sepa
rate
dfr
omth
eso
lidby
ultr
afiltr
atio
nw
ithfil
ters
of0.
45an
d0.
2mm
pore
size
.S
olid
phas
esw
ere
char
acte
rized
byD
TA
/TG
A,
phot
oaco
ustic
FT
IRsp
ectr
osco
py,
UV
-VIS
phot
oaco
ustic
spec
tros
copy
and
x-ra
ydi
ffrac
tion.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3
;@1
2274
-95-
2#C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
G.
Mei
nrat
h,Y
.K
ato,
T.
Kim
ura,
and
Z.
Yos
hida
,R
adio
chim
.A
cta,
75,
159
–67
~199
6!.
riabl
es:
Pre
pare
dby
:
K:
298
~par
tialp
ress
ure
ofC
O 2!/%
:8/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
ae
solu
bilit
yof
UO 2
CO
3as
afu
nctio
nof
pHor
CO 32
2io
nco
ncen
trat
ion
was
repo
rted
ingr
aphi
cal
form
only
.S
olub
ility
prod
uct
of
2CO
3,K
sp5
@UO
221
#@C
O32
2#,
was
repo
rted
tobe
102(1
4.05
60.
09)
at25
°Can
dat
ioni
cst
reng
thof
0.1
mol
dm23
NaC
lO4.
Fro
mth
islu
e,us
ing
sing
leio
nac
tivity
coef
ficie
nts
oflo
gg(U
O22
1)5
20.
40,
log
g(C
O32
2)5
20.
46,
and
logg
(H1
)52
0.09
,th
erm
odyn
amic
lubi
lity
prod
uct
was
obta
ined
asKspo
510
2(1
4.91
60.
10) .
At
part
ialp
ress
ure
ofC
O 2of
8%,
and
atpH
2.8
–4.
6th
eeq
uilib
rium
solid
phas
es
mic
rocr
ysta
lline
UO 2C
O3,
@122
74-9
5-2#.
ditio
nalI
nfor
mat
ion:
~1!
The
follo
win
geq
uatio
nsw
ere
deriv
edto
expr
ess
the
conc
entr
atio
nof
UO
2~aq
!2
1as
afu
nctio
nof
pHor
conc
entr
atio
nof
CO
322
ion,
spec
tivel
y,at
ioni
cst
reng
thof
0.1
mol
dm23
NaC
lO4,
log @
UO
221
#5lo
gK
sp~U
O2C
O3)2
Slo
gK
2lo
gp(
CO
2)2
2pH
,an
dlo
g @UO
221
#
log
Ksp
~UO
2CO
3)2
Slo
g @C
O32
2#.
Equ
ilibr
ium
carb
onat
eio
nco
ncen
trat
ion
was
calc
ulat
edby
the
auth
ors
usin
g,as
inR
efs.
1–
3,H
enry
cons
tant
ofC
O2
inw
ater
(KH)
ddi
ssoc
iatio
nco
nsta
nts
ofca
rbon
icac
id,
K1
and
K2
,in
0.1
mol
dm2
3N
aClO
4,as
log @
CO
322
#5S
log
K1
log
p~C
O2!
12p
H,
whe
relo
gK
5lo
gK
H1
log
K11
log
K2
~Slo
gK
52
17.6
7,R
ef.
4!.~2
!A
tpa
rtia
lpr
essu
res
ofC
O 2of
0.3%
,an
d0.
03%
,an
dpH
2.8
–4.
6,th
eeq
uilib
rium
solid
phas
ew
asid
entifi
edas
UO
3•2H
2O.
At
50.
03%
and
pH.
7,th
eso
lidph
ase
was
anam
orph
ous
sodi
umpo
lyur
anat
e.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
lubi
lity
expe
rimen
tsw
ere
cond
ucte
das
pHtit
ratio
nsin
the
rang
efr
om2.
8to
4.6
unde
r8%
part
ialp
ress
ure
ofC
O2.
stof
expe
rimen
talp
roce
dure
was
iden
tical
with
that
inth
eth
ors’
prev
ious
wor
k.1–
3S
olut
ions
for
the
titra
tion
cont
aine
d5
mol
dm2
3U
~VI!
~dep
lete
dur
aniu
m!an
d0.
1m
oldm
23
ClO
4to
mai
ntai
nco
nsta
ntio
nic
stre
ngth
,an
dw
ere
flush
ednt
inuo
usly
with
ace
rtifi
edN 2
/CO
2ga
sm
ixtu
rem
oist
ened
was
hing
flask
s.T
hepH
titra
tions
wer
epe
rfor
med
forw
ard
dba
ckw
ard
byad
ditio
nof
eith
er0.
1m
oldm2
3H
ClO
4or
0.05
mol
dm2
3N
a 2C
O3.
Com
bina
tion
glas
sel
ectr
odes
~RO
SS
-typ
e,O
rion!
used
for
pHm
easu
rem
ent
wer
eca
libra
ted
agai
nst
five
stan
dard
buffe
rso
lutio
nsin
the
pHra
nge
of1.
7–
10.
Pha
sese
para
tion
was
achi
eved
byul
trafi
ltrat
ion
at0.
45or
0.2m
mpo
resi
ze.
The
conc
entr
atio
nof
U~V
I!w
asde
term
ined
spec
trop
hoto
met
rical
ly.
Sol
idph
ases
wer
ech
arac
teriz
edco
ntin
uous
lydu
ring
solu
bilit
yst
udie
sby
DT
A/T
GA
,ph
otoa
cous
ticF
ourie
rtr
ansf
orm
infr
ared~F
TIR
!,an
dul
trav
iole
t-vi
sibl
e~U
V-V
IS!
spec
tros
copy
,an
dx-
ray
diffr
actio
n.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
typr
oduc
t:st
anda
rdde
viat
ion
see
abov
e.
Ref
eren
ces:
1 G.
Mei
nrat
han
dT
.K
imur
a,In
org.
Chi
m.
Act
a204,
79~1
993!
.2 Y
.K
ato,
T.
Kim
ura,
Z.
Yos
hida
,an
dN
.N
itani
,R
adio
chim
.A
cta
74,
21~1
996!
.3 G
.M
einr
ath
and
T.
Kim
ura,
J.A
lloys
Com
pd.20
2,89
~199
3!.
4 G.
Mei
nrat
h,Y
.K
ato,
T.
Kim
ura,
and
Z.
Yos
hida
,R
adio
chim
.A
cta
84,
21~1
999!
.
576576 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
G.
Mei
nrat
han
dT
.K
imur
a,In
org.
Chi
m.
Act
a204,
79–
85~1
993!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
7p
2(p
artia
lpre
ssur
eof
CO 2)
/%:1
00c 3
/mol
dm2
3 :0.1
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
prod
uct
ofU
O 2C
O3,
Ks0
5@U
O221
#@C
O322
#,w
asre
port
edto
be102
(13.
896
0.11
)at
24°C
and
atio
nic
stre
ngth
of0.
1m
oldm
23
NaC
lO4.
Fro
mth
isva
lue,
usin
gsi
ngle
ion
activ
ityco
effic
ient
sof
log
g(U
O221
)52
0.40
,lo
gg
(CO
322)5
20.
46,
and
log
g(H
1)5
20.
09,
ther
mod
ynam
icso
lubi
lity
prod
uct,
was
late
rob
tain
edas
Ksp0
510
2(1
4.75
60.
10) .
Add
ition
alIn
form
atio
n:S
olub
ility
data
wer
ere
port
edin
grap
hica
lfor
mon
ly.E
quili
briu
mca
rbon
ate
ion
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asca
lcul
ated
bth
eau
thor
sfr
omth
em
easu
red
pHby
usin
gth
eH
enry
cons
tant
and
the
diss
ocia
tion
cons
tant
sof
H2C
O3
in0.
1m
oldm
23
NaC
lO4.
At
100%
part
ial
pres
sure
ofC
O 2,th
eeq
uilib
rium
solid
phas
ew
asU
O2C
O3,
@122
74-9
5-2#
~rut
herf
ordi
ne!.
At
part
ial
pres
sure
sof
CO 2
of0.
98%
~mix
ture
sof
CO 2
and
N 2!
or0.
03%
,th
eso
lidph
ase
was
UO
3•2H
2O,
@205
93-3
9-9#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Sol
ubili
tyex
perim
ents
wer
eco
nduc
ted
aspH
titra
tions
ina
glas
sve
ssel
inth
epH
rang
efr
om2.
8to
4.6
inC
O2
atm
osph
ere~1
00%
part
ialp
ress
ure
ofC
O 2!.
The
gas
was
bubb
led
thro
ugh
the
solu
tion
cont
inuo
usly
afte
rbe
ing
moi
sten
edin
was
hing
flask
s.T
heso
lidw
aspr
ecip
itate
dfr
om;
23
102
3m
oldm
23
U~V
I!so
lutio
nby
addi
tion
of0.
05m
oldm
23
Na 2
CO
3.T
hesy
stem
was
allo
wed
toeq
uilib
rate
for
3w
eeks
and
then
pHtit
ratio
nw
asca
rrie
dou
tby
step
wis
ead
ding
eith
er0.
05m
oldm2
3N
a 2C
O3
or0.
1m
oldm
23
HC
lO4
solu
tion.
Afte
rea
chad
ditio
n,st
eady
pHva
lue
was
reac
hed
with
in2
or3
days
.T
hepH
was
mea
sure
dsi
mul
tane
ousl
yw
ithtw
ogl
ass
elec
trod
es~RO
SS
-typ
e,O
rion!
calib
rate
dw
ithst
anda
rdbu
ffer
solu
tions
.T
heco
ncen
trat
ion
ofU
~VI!
was
dete
rmin
edsp
ectr
opho
tom
etric
ally
.T
hesp
ectr
opho
tom
eter
was
calib
rate
dby
usin
gU
O221
solu
tions
of
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Ref
eren
ces:
1 G.
Mei
nrat
h,Y
.K
ato,
T.
Kim
ura,
and
Z.
Yos
hida
,R
adio
chim
.A
cta
75,
159
~199
9!.
Co
~1!
~2!
~3!
~4!
Va
T/
p2
c 3 Th
UO
va so wa
Ad
re 5 an S p2
Me
So
pH Mo
au 0.0
Na
co in an
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
c Con
cent
ratio
nsin
mol
dm23 .
Add
ition
alin
form
atio
n:F
rom
the
solu
bilit
yda
tare
port
edin
this
docu
men
tan
din
the
auth
ors’
prev
ious
wor
k,1
and
the
solu
bilit
ypr
oduc
tof
UO 2C
O3
take
nfr
omR
ef.
1,th
eov
eral
lsta
bilit
yco
nsta
nts
for
the
com
plex
atio
nof
the
UO
221
ion
with
CO
322
,w
ere
calc
ulat
ed.
Dep
endi
ngon
the
equi
libriu
mco
ncen
trat
ion
ofth
eC
O 322
ion
the
solu
tion
spec
ies
wer
eU
O22
1,
UO
2CO
3,U
O2~
CO
3) 22
2,
and
UO 2
~CO
3) 34
2.
Als
oev
alua
ted
wer
eac
tivity
coef
ficie
nts
ofal
lspe
cies
appl
ying
the
Pitz
erap
proa
ch.T
hen,
base
don
the
Pitz
erin
tera
ctio
npa
ram
eter
s,th
eso
lubi
lity
ofU
O2C
O3
in0.
1m
oldm
23
NaC
lO4
was
calc
ulat
ed.
The
calc
ulat
edva
lues
show
eda
fairl
ygo
odag
reem
ent
with
the
expe
rimen
talr
esul
ts.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
lubi
lity
expe
rimen
tsw
ere
cond
ucte
das
pHtit
ratio
nsin
mol
dm2
3N
aClO
4un
der
100%
part
ialp
ress
ure
ofC
O2
incl
osed
glas
sve
ssel
.S
olut
ions
for
the
titra
tion
cont
aine
dso
lid
2CO
3.T
hepH
was
mea
sure
dby
usin
gco
mbi
natio
ngl
ass
ctro
des~
RO
SS
-typ
e,O
rion!
whi
chw
ere
calib
rate
dag
ains
tst
anda
rdbu
ffer
solu
tions
inth
epH
rang
eof
2–
8.T
henc
entr
atio
nof
U~VI!
was
dete
rmin
edsp
ectr
opho
tom
etric
ally
ing
arse
nazo
IIIre
agen
t.2
The
solid
phas
esw
ere
arac
teriz
edby
infr
ared~
IR!
spec
tros
copy
,an
dx-
ray
frac
tion.
To
prep
are
UO 2
CO
3,ab
out
1g
UO 2
~NO
3!2
was
diss
olve
din
50m
L0.
1m
oldm
23
NaC
lO4,
adju
sted
topH
3.5,
and
CO 2ga
sw
assl
owly
bubb
led
thro
ugh
the
solu
tion
for
1w
eek.
The
yello
wis
hpr
ecip
itate
was
colle
cted
,w
ashe
dw
ithw
ater
,an
dpl
aced
in30
mL
0.1
mol
dm2
3N
aClO
4un
der
CO 2
atm
osph
ere
for
the
pHtit
ratio
nm
easu
rem
ent.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Err
orof
log @
UO
221
#:6
0.01
to6
0.06
log
units
~rep
orte
dse
para
tely
for
ever
ym
easu
rem
ent
!.
Ref
eren
ces:
1 I.P
asha
lidis
,W.R
unde
,and
J.I.
Kim
,Rad
ioch
im.A
cta
61,1
41~1
993!
.2 J.
Bor
ak,
Z.
Slo
vak,
and
J.F
isch
er,
Tal
anta17,
215
~197
0!.
577577IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
oca
rbon
ate;
UO 2C
O3
;@1
2274
-95-
2#~2
!C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
I.P
asha
lidis
,K
.R
.C
zerw
insk
i,T
.F
angh
anel
,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a76,
55–
62~1
997!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
5p
2~p
artia
lpre
ssur
eof
CO 2!
/%:
100
c 3/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2CO
3as
afu
nctio
nof
carb
onat
eio
nco
ncen
trat
ion
in0.
1m
oldm
23
NaC
lO4
at22
°Ca
pH2
log @
CO
322
#b,c
2lo
g @U
O22
1#c
pH2
log @
CO
322
#a,b
2lo
g @U
O22
1#c
3.89
9.77
3.43
5.31
6.93
4.46
3.91
9.73
3.47
5.33
6.89
4.37
3.98
9.59
3.62
5.37
6.81
4.46
4.18
9.19
3.84
5.38
6.79
4.08
4.64
8.27
4.38
5.42
6.71
4.37
4.66
8.23
4.46
5.52
6.51
4.39
4.68
8.19
4.29
5.53
6.49
4.10
4.70
8.15
4.21
5.55
6.45
4.02
4.83
7.89
4.24
5.57
6.41
4.09
4.86
7.83
4.52
5.60
6.35
4.01
4.91
7.73
4.52
5.63
6.29
4.01
5.02
7.51
4.21
5.79
5.97
3.70
5.04
7.47
4.59
5.80
5.95
3.77
5.10
7.35
4.47
5.82
5.91
3.74
5.21
7.13
4.19
5.92
5.71
3.46
5.22
7.11
4.33
5.93
5.69
3.35
5.26
7.03
4.18
5.95
5.65
3.36
5.28
6.99
4.22
a Equ
ilibr
ium
solid
phas
ew
asU
O 2CO
3,@1
2274
-95-
2#,in
alls
olut
ions
.b E
quili
briu
mco
ncen
trat
ion
ofth
eca
rbon
ate
ion;
itw
asca
lcul
ated
byth
eau
thor
sfr
omth
eeq
uatio
nlo
g@C
O32
2#5
Slo
gK
1lo
gp~
CO
2!1
2pH
,w
here
Slo
gK
52
17.5
5(6
0.09
)in
clud
esH
enry
cons
tant
for
CO
2,an
ddi
ssoc
iatio
nco
nsta
nts
ofca
rbon
icac
id.
Me
So
0.1
a UO
ele
six
co us ch dif
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3
;@1
2274
-95-
2#C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
G.
Mei
nrat
han
dT
.K
imur
a,J.
Allo
ysC
ompd
.202,
89–
93~1
993!
.
riabl
es:
Pre
pare
dby
:
K:
298
~par
tialp
ress
ure
ofC
O 2!/%
:10
0/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2CO
3in
0.1
mol
dm2
3N
aClO
4so
lutio
nssa
tura
ted
at25
°Cun
der
CO
2at
mos
pher
ea
pH2
log
Cub
2lo
gC
(CO 32
2)c
bpH
2lo
gC
ub2
log
C(C
O 322
)c
3.08
2.71
11.4
64.
504.
868.
62
3.11
2.66
11.4
04.
754.
898.
12
3.15
2.94
11.3
25.
164.
897.
30
3.17
2.93
11.2
85.
284.
887.
06
3.28
3.12
11.0
65.
334.
866.
96
3.41
3.32
10.8
05.
554.
726.
52
3.77
3.95
10.0
85.
614.
626.
40
4.10
4.50
9.42
5.75
4.29
6.12
4.15
4.60
9.32
5.77
4.19
6.08
4.15
4.61
9.32
5.97
3.52
5.68
4.22
4.63
9.18
5.98
3.58
5.66
4.31
4.71
9.00
6.13
3.04
5.36
4.33
4.76
8.96
6.16
2.88
5.30
4.40
4.79
8.82
6.17
2.92
5.28
4.47
4.84
8.68
6.19
2.68
5.24
heso
lidph
ase
ateq
uilib
rium
was
UO
2CO
3,@1
2274
-95-
2#,in
alls
olut
ions
.ot
alur
aniu
m~V
I!co
ncen
trat
ion
inth
esa
tura
ted
solu
tion.
quili
briu
mC
O 322
conc
entr
atio
nca
lcul
ated
byth
eau
thor
sfr
omth
eso
lutio
neq
uilib
riaof
CO
2an
ddi
ssoc
iatio
nco
nsta
nts
ofH
2CO
3~1
!.
ditio
nalI
nfor
mat
ion:
eso
lubi
lity
Sof
UO
2CO
3w
asin
terp
rete
dby
the
auth
ors
asS5
Ksp
@CO
322
#21(1
1S
bn@C
O32
2#n
),w
here
Ksp
5@U
O22
1#@
CO
322
#
102
(14.
186
0.03
) ,an
db
n5
@UO
2~C
O3) n2
22
n] @
UO
221
#21@C
O32
2#2
n,
with
b15
10(9
.236
0.04
) ,b
25
10(1
5.38
60.
17) ,
and
b35
10(2
1.86
60.
05) ,
all
atio
nic
stre
ngth
of0.
1m
oldm2
3N
aClO
4.N
osi
gnifi
cant
cont
ribut
ion
toth
eso
lubi
lity
from
UO 2~O
H!1
was
obse
rved
.T
heco
ntrib
utio
nfr
om(U
O2) 3
~OH
! 51an
d(U
O 2) 2
~OH
! 221
spec
ies
was
less
than
0.8%
.B
yus
ing
sing
leio
nac
tivity
coef
ficie
nts
oflo
gg
(UO
221
)52
0.40
,lo
gg
(CO
322
)52
0.46
,an
dlo
gg~H
1)5
20.
09,
ther
mod
ynam
icso
lubi
lity
prod
uct
ofU
O2C
O3
was
late
rob
tain
edas
Ksp0
510
2(1
5.04
60.
04) .
578578 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3
;@1
2274
-95-
2#~2
!C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
Y.K
ato,
T.K
imur
a,Z
.Yos
hida
,and
N.N
itani
,Rad
ioch
im.A
cta
74,
21–
5~1
996!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8p
2~p
artia
lpre
ssur
eof
CO 2!
/%:
0.03
;10
0c 3
/mol
dm2
3 :0.
1
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
prod
uct
ofU
O 2C
O3,
Ksp
5@U
O22
1#@
CO
322
#,w
asre
port
edto
be102
(14.
106
0.14
)m
ol2
dm2
6at
25°C
and
atio
nic
stre
ngth
of0.
1m
oldm
23
NaC
lO4.
Thi
sva
lue
was
obta
ined
from
the
solu
bilit
ym
easu
rem
ents
unde
rpa
rtia
lpr
essu
reof
CO
2of
100%
.U
nder
such
cond
ition
sth
eeq
uilib
rium
solid
phas
ew
asU
O2C
O3,
@122
74-9
5-2#.
The
solu
bilit
yda
taw
ere
pres
ente
din
grap
hica
lfo
rmon
ly,
and
calc
ulat
ion
ofK
spw
aspe
rfor
med
usin
gth
esa
me
proc
edur
eas
inth
eau
thor
s’pr
evio
usw
ork.
1,2
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Sol
ubili
tyex
perim
ents
wer
eco
nduc
ted
aspH
titra
tions
ina
ther
mos
tate
dgl
ass
vess
elin
the
pHra
nge
from
2.9
to4.
9in
anat
mos
pher
eof
air
(0.0
3%C
O 2!or
pure
CO 2
.T
heso
lidph
ase
was
prec
ipita
ted
from
0.02
mol
dm23
solu
tion
ofU~
VI!
byad
ditio
nof
0.1
mol
dm2
3N
aHC
O 3,
or0.
1m
oldm
23
HC
lO4.
The
pHw
asm
easu
red
byus
ing
com
bina
tion
glas
sel
ectr
odes
~Hor
iba!
whi
chw
ere
calib
rate
dag
ains
tbu
ffer
solu
tions
with
pHof
4.01
and
6.86
~bot
h6
0.01
!.P
hase
sepa
ratio
nw
asac
hiev
edby
cent
rifug
atio
nat
3000
rpm
and
ultr
afiltr
atio
nw
itha
filte
rof
0.22
mm
pore
size
.T
heco
ncen
trat
ion
ofU
~VI!
was
dete
rmin
edby
fluor
esce
nce
spec
trop
hoto
met
ry~H
itach
iF
-450
0!in
solu
tions
acid
ified
to1
mol
dm23
HC
lO4.
Sol
idph
ases
wer
ech
arac
teriz
edby
phot
oaco
ustic
UV
-VIS
and
FT
IRsp
ectr
osco
py,
and
x-ra
ycr
ysta
llogr
aphy~R
igak
uR
AD
-3C!
.F
orph
otoa
cous
ticsp
ectr
osco
py,
abou
t5
–10
mg
ofai
r-dr
ied
solid
phas
ew
asus
ed.
Not
hing
spec
ified
exce
ptth
atU
O 221
stoc
kso
lutio
nw
aspr
epar
edfr
omre
agen
tgr
ade
U 3O8.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.
Ref
eren
ces:
1 G.
Mei
nrat
han
dT
.K
imur
a,In
org.
Chi
m.
Act
a204,
79~1
993!
.2 G
.M
einr
ath
and
T.
Kim
ura,
J.A
lloys
Com
pd.20
2,89
~199
3!.
Co
~1!
~2!
~3!
~4!
Va
T/
p2
c 3 a T b T c E Ad
Th
5
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
Car
bon
diox
ide;
CO 2;
@124
-38-
9#S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#W
ater
;H 2
O;
@773
2-18
-5#
U.
Kra
mer
-Sch
nabe
l,H
.B
isch
off,
and
R.
H.
Xi,
Rad
ioch
im.
Act
a56
,18
3–
8~1
992!
.
riabl
es:
Pre
pare
dby
:
K:
295
~par
tialp
ress
ure!/%
:10
0/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2CO
3in
0.1
mol
dm2
3so
lutio
nof
NaC
lO4
at25
°Can
d10
0%pa
rtia
lpre
ssur
eof
CO
2
pHa
2lo
g @C
O322
#b2
log
CU
cpH
a2
log @
CO
322#b
2lo
gC
Uc
3.63
10.3
82.
984.
398.
864.
23
3.90
9.84
2.91
4.46
8.72
4.31
3.94
9.76
3.48
4.55
8.54
4.42
4.18
9.28
3.96
4.79
8.06
4.35
4.19
9.26
3.94
4.81
8.02
4.29
4.19
9.25
3.98
4.83
7.98
4.28
4.24
9.15
3.40
4.90
7.84
4.24
4.27
9.10
4.00
5.04
7.56
3.95
4.28
9.08
4.00
5.05
7.54
4.14
4.33
8.99
4.07
5.41
6.82
2.61
4.34
8.96
4.04
5.47
6.70
2.78
4.34
8.96
4.10
heso
lubi
lity
ofU
O 2C
O3
was
stud
ied
inth
epH
rang
efr
om3
to6
sinc
eun
der
thes
eco
nditi
ons
UO
2CO
3,@1
2274
-95-
2#,w
asth
equ
ilibr
ium
solid
phas
e.T
heso
lidch
ange
dto
am
ixed
uran
ylhy
drox
ocar
bona
teat
pH.
6.5,
and
toU
O 2~O
H! 2
and
Na 2
U2O
7at
pH8. qu
ilibr
ium
conc
entr
atio
nof
free
carb
onat
eio
n;it
was
calc
ulat
edfr
omth
em
easu
red
pH,
part
ialp
ress
ure
ofC
O2,
and
the
diss
ocia
tion
onst
ants
ofca
rbon
icac
id.
otal
uran
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
n.
ditio
nalI
nfor
mat
ion:
eso
lubi
lity
data
wer
efit
ted
tova
rious
mod
els
whi
chto
okin
toco
nsid
erat
ion
diffe
rent
U~V
I!sp
ecie
s.T
hebe
stfit
was
foun
dfo
ra
mod
elns
ider
ing
UO 2
CO
3as
the
solid
phas
e,an
dso
lutio
nco
mpl
exes
UO
2~C
O3)
n22
2n
(n5
1–
3)
with
stab
ility
cons
tant
sbn
5@U
O2~
CO
3)n2
22
n] @
UO
221#2
1@C
O322
#2n.
The
follo
win
gco
nsta
nts
wer
eob
tain
ed:Ksp
5@U
O221
#@C
O322
#510
213
.29 ,
b15
108.
70,
b2
510
16.3
3 ,an
db
35
1023
.92 .
The
solu
bilit
yof
UO 2
CO
3w
asal
sost
udie
dis
othe
rmal
lyby
diss
olvi
ngit
inN
aHC
O3
solu
tions
.T
heda
taob
tain
edag
reed
basi
cally
with
thos
efr
omth
etit
ratio
nte
chni
que
but
wer
eno
tco
nsid
ered
for
the
subs
eque
ntca
lcul
atio
nssi
nce
they
show
edra
ther
larg
esc
atte
r.
579579IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Mea
sure
men
tsw
ere
carr
ied
out
inC
O2
atm
osph
ere
in0.
1m
oldm2
3N
aClO
4so
lutio
nsin
ath
erm
osta
ted
titra
tion
vess
el.
A0.
01m
oldm2
3so
lutio
nof
U~V
I!la
bele
dw
ith23
3 Uw
aspr
ecip
itate
dat
pH;
6by
addi
ng0.
05m
oldm
23
Na 2
CO
3.M
oist
ened
CO 2
was
bubb
led
thro
ugh
the
solu
tion
cont
inuo
usly
.T
heso
lutio
nw
ithth
epr
ecip
itate
was
allo
wed
tost
and
unde
rC
O2
atm
osph
ere
for
3w
eeks
.D
urin
gth
ispe
riod,
pHan
dU~V
I!co
ncen
trat
ion
wer
ech
ecke
dre
peat
edly
and
whe
nth
eyre
mai
ned
unch
ange
d,th
epH
ofth
eso
lutio
nw
asva
ried
step
wis
ein
the
pHra
nge
from
3.0
to6.
2by
addi
ngsm
allp
ortio
nsof
eith
er0.
1m
oldm2
3H
ClO
4or
0.05
mol
dm2
3N
a 2C
O3.
Ast
eady
stat
ew
ithst
abili
zed
pHva
lue
was
usua
llyat
tain
edw
ithin
1–
3da
ys,
from
both
supe
rsat
urat
ion
and
unde
rsat
urat
ion.
Pha
sese
para
tion
was
then
achi
eved
byul
trafi
ltrat
ion
thou
gha
220
nmpo
resi
zefil
ter,
and
the
conc
entr
atio
nof
U~VI!
inth
eso
lutio
nw
asm
easu
red
byliq
uid
scin
tilla
tion
coun
ting
of23
3 Uus
ing
Tric
arb
300
~Pac
kard!
spec
trom
eter
.T
hea
coun
ting
effic
ienc
yw
asde
term
ined
tobe
99.6
4%,
byca
libra
tion
with
an241 A
mst
anda
rd.
Com
bina
tion
glas
sel
ectr
odes~O
rion!
wer
eus
edfo
rpH
mea
sure
men
taf
ter
calib
ratio
nag
ains
tfo
urst
anda
rdbu
ffer
solu
tions
.S
olid
phas
esw
ere
char
acte
rized
usin
gD
TA
/TG
Aan
dx-
ray
pow
der
diffr
actio
n.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.pH
:pr
ecis
ion6
0.02
pHun
its~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.
Run
de,
G.
Mei
nrat
h,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a58
Õ59,
93~1
992!
.2 G
.M
einr
ath,
Y.
Kat
o,T
.K
imur
a,an
dZ
.Y
oshi
da,
Rad
ioch
im.
Act
a75
,15
9~1
999!
.
Co
~1!
~2!
~3!
~4!
Va
T/
p2
c 3 a T e . b E c c T Ad
Th
co
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
Car
bon
diox
ide;
CO 2;
@124
-38-
9#S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#W
ater
;H 2
O;
@773
2-18
-5#
I.P
asha
lidis
,W
.R
unde
,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a61
,14
1–
6~1
993!
.
riabl
es:
Pre
pare
dby
:
K:
295
~par
tialp
ress
ure!/%
:10
0/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofU
O2C
O3
in0.
1m
oldm
23
solu
tion
ofN
aClO
4at
25°C
and
100%
part
ialp
ress
ure
ofC
O2a
pH2
log @
CO
322#b
2lo
g @U
O221
#2
log
Ksp
c
3.11
11.4
01.
81d13
.21
3.11
11.4
01.
73e13
.14
3.26
11.4
02.
33d13
.43
3.45
10.7
32.
61d13
.34
3.45
10.7
32.
68e13
.41
3.45
10.6
92.
78e13
.47
3.46
10.6
92.
76d13
.45
3.56
10.5
12.
89d13
.39
3.69
10.2
33.
03d13
.27
3.69
10.2
33.
19e13
.43
3.78
10.0
63.
15d13
.21
3.78
10.0
63.
55e13
.61
3.84
9.94
3.23d
13.1
74.
009.
613.
58d13
.19
4.00
9.61
3.91e
13.5
2
quili
briu
mso
lidph
ase
was
UO 2C
O3,
@122
74-9
5-2#,
inal
lsol
utio
ns.
heco
ncen
trat
ion
offr
eeca
rbon
ate
ion.
Itw
asca
lcul
ated
from
the
mea
sure
dpH
,pa
rtia
lpr
essu
reof
CO
2,H
enry
cons
tant
,an
dis
soci
atio
nco
nsta
nts
ofca
rbon
icac
id.
sp5
@UO
221#@
CO
322#.
eter
min
edby
UV
spec
tros
copy
.et
erm
ined
byIC
P-A
ES
.
ditio
nalI
nfor
mat
ion:
eav
erag
eva
lue
ofKsp
was
repo
rted
tobe
102(1
3.35
60.
14)
mol
2dm
26 .
By
usin
gth
esp
ecifi
cio
nin
tera
ctio
nth
eory
proc
edur
e,th
isw
asre
calc
ulat
edby
the
auth
ors
toze
roio
nic
stre
ngth
toob
tain
Ksp0
510
2(1
4.21
60.
14)
mol
2dm
26 .
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Apo
rtio
nof
UO
221st
ock
solu
tion
was
dilu
ted
with
0.1
mol
dm2
3N
aClO
4,ne
utra
lized
topH
7w
ithN
aOH
,an
dC
O 2ga
sw
asbu
bble
dth
roug
hth
epr
ecip
itate
ofU
O2C
O3.
The
prec
ipita
tion
proc
edur
ean
dsu
bseq
uent
solu
bilit
ym
easu
rem
ents
wer
epe
rfor
med
ina
clos
edgl
ass
vess
el.
The
pHof
the
solu
tion
inco
ntac
tw
ithU
O2C
O3
was
adju
sted
step
wis
eby
addi
tion
of0.
1m
oldm2
3H
ClO
4or
NaO
H.
The
gas
was
bubb
led
thro
ugh
the
vess
elco
ntin
uous
ly.
The
pHw
asm
easu
red
with
aR
OS
S-t
ype
com
bina
tion
elec
trod
eco
ntai
ning
3m
oldm2
3N
aClO
4as
afil
ling
solu
tion.
The
elec
trod
ew
asca
libra
ted
agai
nst
six
diffe
rent
buffe
rso
lutio
ns.
The
time
ofeq
uilib
ratio
naf
ter
each
adju
stm
ent
ofpH
was
not
repo
rted
.T
heeq
uilib
rium
uran
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nw
asde
term
ined
byIC
P-A
ES
toob
tain
the
tota
lura
nium
conc
entr
atio
n,an
dby
UV
spec
tros
copy
toob
tain
the
UO 221
conc
entr
atio
n.T
heso
lidph
ases
wer
ech
arac
teriz
edby
x-ra
ypo
wde
rdi
ffrac
tion,
and
IRan
dU
Vsp
ectr
osco
py.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
580580 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
solid
was
diss
olve
din
solu
tions
ofva
ryin
gin
itial
pHun
der
CO 2
atm
osph
ere.
The
gas
was
purifi
edan
deq
uilib
rate
dby
pass
ing
itth
roug
h1
mol
dm23
H2S
O4,
dist
illed
wat
er,
and
0.1
mol
dm23
NaC
lO4
befo
reit
ente
red
the
reac
tion
vess
el.
Con
stan
tpH~w
ithin
60.
02pH
unit!
was
reac
hed
with
in3
–14
days
.T
hen
sam
ples
ofth
esa
tura
ted
solu
tions
wer
ew
ithdr
awn
and
filte
red
thro
ugh
450
nmpo
resi
zefil
ter.
Gre
atca
rew
asta
ken
toen
sure
that
durin
gsa
mpl
ing
and
filtr
atio
nth
eco
ntac
tof
the
sam
ple
with
air
was
assh
ort
aspo
ssib
leto
avoi
dC
O2
cont
amin
atio
nor
loss
.T
hesa
mpl
esw
ere
anal
yzed
for
U~VI!
byliq
uid
scin
tilla
tion
coun
ting
usin
ga
Bec
kman
LS28
00co
unte
rca
libra
ted
with
U~V
I!so
lutio
nsco
ntai
ning
1310
25–
3310
23
mol
dm2
3
U~V
I!,
orsp
ectr
opho
tom
etric
ally~H
itach
i330
spec
trop
hoto
met
er!by
usin
ga
mod
ified
arse
nazo
IIIm
etho
d.1
The
uran
ium
conc
entr
atio
nsob
tain
edby
thes
etw
om
etho
dsag
reed
with
in3%
.T
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
inve
stig
ated
bym
eans
ofx-
ray
diffr
actio
nan
d14
C-la
bele
dU
O 2C
O3.
Sol
utio
nsof
UO 221
wer
epr
epar
edfr
omU
O 2~N
O3!
2•6H
2O~M
erck
p.a.!
.T
hede
cay
prod
ucts
wer
ere
mov
edon
the
day
the
expe
rimen
tst
arte
dby
pass
ing
the
UO
221so
lutio
nin
9m
oldm
23
HC
lth
roug
hD
owex
134
ion
exch
ange
resi
n,an
del
utin
g~VI!
with
1m
oldm
23
HC
l.T
heso
lutio
nw
asev
apor
ated
todr
ynes
s,an
dU
O 2C
O3
was
prep
ared
byad
ding
satu
rate
dN
aHC
O3
solu
tion
toth
edr
yre
sidu
eat
room
tem
pera
ture
.~T
here
sidu
ew
asre
diss
olve
dfo
rth
esa
keof
stan
dard
izin
git
with
ED
TA
titra
tion.
!T
here
sidu
edi
ssol
ved
with
the
evol
utio
nof
CO
2un
tila
pale
yello
wpr
ecip
itate
form
ed.
The
nth
ere
actio
nve
ssel
was
stop
pere
dan
dal
low
edto
stan
dov
erni
ght,
the
prec
ipita
tew
asce
ntrif
uged
,w
ashe
dw
ithw
ater
seve
ralt
imes
,an
dch
arac
teriz
edby
x-ra
ydi
ffrac
tion.
Itw
asid
entifi
edas
UO 2C
O3
byco
mpa
ring
the
diffr
actio
npa
ttern
with
liter
atur
eda
ta.
2,3
The
prec
ipita
te,
drie
dov
ersi
lica
gel,
was
also
anal
yzed
for
uran
ium
cont
ent:
for
UO
2CO
3,ca
lcul
ated
3.6%
,fo
und
3.1%
.O
ther
chem
ical
sw
ere
Mer
ckre
agen
tgr
ade
prod
ucts
.D
oubl
ydi
still
edde
ioni
zed
wat
erw
asus
edfo
rth
epr
epar
atio
nof
the
solu
tions
.It
was
boile
dbe
fore
use
tore
mov
eal
ltra
ces
ofC
O2.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 S.
B.
Sav
vin,
Tal
anta8
,67
3~1
961!
.2 J.
R.
Cla
rkan
dC
.L.
Chr
ist,
Am
.M
iner
.41
,84
4~1
956!
.3 P
owde
rD
iffra
ctio
nF
ile,
Inor
gani
cph
ases
.In
t.C
ente
rfo
rD
iffra
ctio
nD
ata,
U.S
.A.
Co
~1!
~2!
~3!
~4!
Va
T/
p2
c 3 a E b T d c K d D e D Ad
Th
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
tem
pera
ture
room
.T
heco
nten
tsof
the
bottl
ew
asth
ence
ntrif
uged
,an
dbo
thth
eso
lidan
dliq
uid
phas
esw
ere
anal
yzed
for
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
ns,
uran
ium
was
dete
rmin
edei
ther
bypo
tent
iom
etric
titra
tion
with
FeS
O4
afte
rre
duct
ion
ofur
aniu
m,
orco
lorim
etric
ally
with
asco
rbic
acid
.S
odiu
mw
asde
term
ined
byfla
me
phot
omet
ry,
and
carb
onat
eby
abso
rptio
n-gr
avim
etric
met
hod.
3
obta
ined
.U
O 3us
edw
aspr
epar
edby
prec
ipita
ting
the
pero
xide
UO
4•xH
2Ofr
oma
solu
tion
ofU
O 2~N
O3!
2at
pH2.
5w
ithsu
bseq
uent
deco
mpo
sitio
nof
the
prec
ipita
teat
325
°C.
Sou
rce
and
purit
yof
UO 2
~NO
3!2
not
spec
ified
.R
eage
ntgr
ade
Na
2CO
3
was
used
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
5.2.
Sod
ium
Dic
arbo
nato
diox
oura
nate
„V
I…„2-…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
dica
rbon
atod
ioxo
uran
ate;
Na
2UO
2~C
O3!
2;@
#W
ater
;H 2
O;
@773
2-18
-5#M
.Bac
hele
t,E
.Che
ylan
,M.D
uis,
and
J.C
.Gou
lette
,Bul
l.S
oc.
Chi
m.
Fra
nce
173
–9~1
954!
.
riabl
es:
Pre
pare
dby
:
K:
291
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
at18
°Cof
Na 2U
O2~
CO
3!2
inw
ater
was
repo
rted
tobe
1415
gsa
lt/L
solu
tion
~3.2
6m
oldm
23 ,
com
pile
r!.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Na 2U
O2~
CO
3!2
was
prep
ared
bydi
ssol
utio
nof
UO
3•1/
2H2O
in1
Lof
aso
lutio
nco
ntai
ning
stoi
chio
met
ricam
ount
ofN
aHC
O3
bypa
ssin
ga
stre
amof
CO 2
thro
ugh
the
slur
ry.
The
resu
lting
solu
tion
was
evap
orat
edat
40°C
.A
naly
sis
~fou
nd/c
alcu
late
d,in
mas
s%!
:U
O3
64.7
/65.
6,N
a 2O14
.6/1
4.22
,C
O 220
.7/2
0.18
.S
ourc
ean
dpu
rity
ofm
ater
ials
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
581581IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ocar
bona
te;
UO 2C
O3;
@122
74-9
5-2#
~2!
Sod
ium
carb
onat
e;N
a2C
O3;
@593
-85-
1#~3
!W
ater
;H 2
O;
@773
2-18
-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc
.78
,59
78–
83~1
956!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
9c 2
/mol
dm2
3 :0.
094
–1.
41J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2CO
3in
Na 2
CO
3so
lutio
nsat
26°Ca
Na 2
CO
3
(c2
/mol
dm2
3 )N
a 2C
O3
(m2
/mol
kg2
1 )cU
O2C
O3
(c1
/mol
dm2
3 )U
O2C
O3
(m1
/mol
kg2
1 )cD
ensi
tyb
~gcm
23 !
0.09
40.
0949
0.08
70.
0879
1.02
9
0.18
90.
192
0.17
40.
177
1.06
1
0.33
70.
389
0.33
80.
349
1.12
1
0.56
60.
593
0.52
10.
546
1.18
8
0.75
50.
811
0.74
20.
797
1.25
7
0.94
31.
025
0.88
60.
963
1.31
4
1.13
1.26
81.
091.
223
1.37
3
1.41
1.76
31.
351.
640
1.42
3
a Com
posi
tion
ofeq
uilib
rium
solid
phas
esno
tre
port
ed.
b At
25°C
.c C
alcu
late
dby
com
pile
r.
Add
ition
alIn
form
atio
n:T
heau
thor
sre
port
edth
atso
lubi
litie
sup
to32
mas
s%
UO
3w
ere
also
mea
sure
d.N
oda
taw
ere
repo
rted
,ho
wev
er,
sinc
eth
eso
lutio
nsin
this
regi
onw
ere
very
visc
ous,
diffi
cult
toce
ntrif
uge,
and
ineq
uilib
rium
with
appr
ecia
ble
CO
2pr
essu
re~2
0m
m!.
Equ
ilibr
ium
conc
en-
trat
ions
inth
ese
solu
tions
coul
dno
tbe
mea
sure
dbe
caus
eof
supe
rsat
urat
ion.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsco
ntai
ning
exce
ssU
O2C
O3
wer
eeq
uilib
rate
din
Pyr
exor
poly
fluor
oeth
ylen
ebo
ttles
for
atle
ast
10da
ysbu
tus
ually
for
3or
mor
ew
eeks
toen
sure
equi
libriu
m.
The
agita
tion
was
carr
ied
out
ina
cons
tant
UO
2CO
3w
aspr
epar
edby
agita
ting
am
ixtu
reof
UO
3,w
ater
and
exce
ssof
solid
CO 2
ina
stee
lbo
mb
for5
hat
90–
105
°Can
dpr
essu
res
of25
00to
3000
ppsi~1
7.2
–20
.7M
Pa!.
Apa
leye
llow
prod
uctw
ithco
nsis
tent
lyco
nsta
ntU
/COra
tioof
1.01
–1.
03w
as
Co
~1!
~2!
Va
T/
Me
No
J
31.0
0,C
O 222
.48/
21.8
0;R
bsa
lt—U
O 335
.04/
36.1
0,R
b 2O47
.95/
47.2
0,C
O 217
.01/
16.7
0;C
ssa
lt—U
O 329
.30/
29.1
0,C
s 2O56
.70/
57.4
5,C
O 214
.00/
13.4
6.A
naly
sis
ofth
eN
asa
ltw
asno
tre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
tric
arbo
nato
diox
oura
nate~VI!
;N
a 4U
O2~
CO
3!3;
2076
-52-
7#S
odiu
mca
rbon
ate;
Na
2CO
3;
@497
-19-
8#W
ater
;H 2
O;
@773
2-18
-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc
.78
,59
78–
83~1
956!
.
riabl
es:
Pre
pare
dby
:
K:
299
/mol
dm2
3 :0
–0.
5J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Na 4
UO
2~C
O3!
3in
Na 2
CO
3so
lutio
nsat
26°Ca
Na 2
CO
3
(c2
/mol
dm2
3 )N
a 4U
O2~
CO
3!3
(c1
/mol
dm2
3 )
00.
286
0.3
0.17
3
0.5
0.13
0
ompo
sitio
nof
equi
libriu
mso
lidph
ases
was
not
repo
rted
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
cont
aini
ngex
cess
solid
reeq
uilib
rate
din
Pyr
exor
poly
fluor
oeth
ylen
ebo
ttles
for
atst
10da
ys,
but
usua
llyfo
r3
orm
ore
wee
ksto
ensu
reui
libriu
m.
The
agita
tion
was
carr
ied
out
ina
nsta
nt-t
empe
ratu
rero
om.
The
cont
ents
ofth
ebo
ttle
wer
en
cent
rifug
ed,
and
both
the
solid
and
liqui
dw
ere
anal
yzed
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
ncen
trat
ion
inth
esa
tura
ted
solu
tion,
uran
ium
was
term
ined
eith
erby
pote
ntio
met
rictit
ratio
nw
ithF
eSO
4af
ter
duct
ion
ofur
aniu
m,
orco
lorim
etric
ally
with
asco
rbic
acid
.di
umw
asde
term
ined
byfla
me
phot
omet
ry,
and
carb
onat
eab
sorp
tion-
grav
imet
ricm
etho
d.
Na 4
UO
2~C
O3!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.F
irst,
sodi
umur
anat
ew
aspr
ecip
itate
dfr
omU
O2~
NO
3!2
solu
tion
with
NaO
H,
was
hed
and
diss
olve
din
aso
lutio
nof
NaH
CO
3.T
hesa
ltw
asth
enob
tain
edby
evap
orat
ing
the
solu
tion
toa
low
volu
me
whi
lepa
ssin
gC
O 2th
roug
hth
eso
lutio
n.T
hesa
ltw
asre
crys
talli
zed
from
wat
erto
yiel
da
brig
htye
llow
prod
uct
with
the
CO
3/U
ratio
of3:
3.2.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.N
a 2CO
3w
asa
reag
ent
grad
epr
oduc
t.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.E
.Bun
ce,N
.H.F
urna
m,a
ndR
.T.M
undy
,Rep
ortM
-423
8,19
47.
582582 JIRI HALA
5.3.
Sal
tsof
Tris
„ca
rbon
ato…D
ioxo
uran
ante
„4-…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Alk
alim
etal
tric
arbo
nato
diox
oura
nate
s~V
I!~2
!W
ater
;H 2
O;
@773
2-18
-5#~1
!M
.B
ache
let,
E.
Che
ylan
,K
.D
uis,
and
J.C
.G
oule
tte,
Bul
l.S
oc.
Chi
m.
Fra
nce
55–
60~19
52!.
~2!
M.
Bac
hele
t,E
.C
heyl
an,
K.
Dui
s,an
dJ.
C.
Gou
lette
,B
ull.
Soc
.C
him
.F
ranc
e17
3–
9~195
4!.
Var
iabl
es:
Pre
pare
dby
:
Tem
pera
ture
J.H
a´ l
a
Exp
erim
enta
lDat
a
Sol
ubili
tyof
alka
lim
etal
tric
arbo
nato
diox
oura
nate
s~V
I!in
wat
era
Sal
tT
empe
ratu
re~°
C!
Sal
tin
the
satu
rate
dso
lutio
n~g
dm2
3 !
Sal
tin
the
satu
rate
dso
lutio
n~m
oldm
23 !e
Na 4
UO
2~C
O3!
3b20
204d
0.71
3
K4U
O2~
CO
3!3c
047
0.07
75
1871
0.11
7
Rb 4
UO
2~C
O3!
3c20
550
0.69
5
Cs 4
UO
2~C
O3!
3c20
1300
1.32
5
a Equ
ilibr
ium
solid
phas
esno
tin
vest
igat
ed.
b @120
76-5
2-7#;
orig
inal
mea
sure
men
tin
Ref
.1.
c Orig
inal
mea
sure
men
tsin
Ref
.2.
d gU
O3
dm2
3 .e C
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.T
hesa
ltsw
ere
prep
ared
bydi
ssol
ving
UO
3•1/
2H2O
ina
solu
tion
ofth
eco
rres
pond
ing
alka
lim
etal
hydr
ogen
carb
onat
eat
room
tem
pera
ture
.T
hem
ole
ratio
ofre
acta
nts
was
1:4.
Fro
mth
ere
sulti
ngso
lutio
nsth
eso
dium
salt
was
prec
ipita
ted
at50
°C,a
ndth
eot
her
salts
wer
eob
tain
edaf
ter
evap
orat
ion
ofth
eso
lutio
nsat
room
tem
pera
ture
and
recr
ysta
lliza
tion
from
wat
er.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.A
naly
sis
~fou
nd/
calc
ulat
ed,
mas
s%!:
Ksa
lt—U
O3
47.1
4/47
.20,
K 2O30
.38/
Co
~1!
@1 ~2!
~3!
Va
T/
c 2 a C Me
Iso
we
lea
eq co the
for
co de re So
by
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
byab
sorp
tion-
grav
imet
ricm
etho
d.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 W.E
.Bun
ce,N
.H.F
urna
m,a
ndR
.T.M
undy
,Rep
ortM
-423
8,19
47.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
tric
arbo
nato
diox
oura
nate~VI!
;N
a 4U
O2~
CO
3) 3
;20
76-5
2-7#
Sod
ium
sulfa
te;
Na 2S
O4
;@7
757-
82-6#
Wat
er;
H 2O
;@7
732-
18-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc
.78
,59
78–
83~1
956!
.
riabl
es:
Pre
pare
dby
:
K:
299
/mol
dm2
3 :0.
3–
3.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Na 4
UO
2~C
O3!
3in
Na 2
SO
4so
lutio
nsat
26°Ca
Na 2
SO
4
(c2
/mol
dm2
3 )N
a 4U
O2~
CO
3!3
(c1
/mol
dm2
3 )
0.3
0.16
8
0.5
0.13
5
1.5
0.04
5
2.0
0.03
5
3.0
0.01
1
ompo
sitio
nof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
cont
aini
ngex
cess
solid
reeq
uilib
rate
din
Pyr
exor
poly
fluor
oeth
ylen
ebo
ttles
for
atst
10da
ys,
but
usua
llyfo
r3
orm
ore
wee
ksto
ensu
reui
libriu
m.
The
agita
tion
was
carr
ied
out
ina
nsta
nt-t
empe
ratu
rero
om.
The
cont
ents
ofth
ebo
ttle
wer
en
cent
rifug
ed,
and
both
the
solid
and
liqui
dw
ere
anal
yzed
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
ncen
trat
ion
inth
esa
tura
ted
solu
tion,
uran
ium
was
term
ined
eith
erby
pote
ntio
met
rictit
ratio
nw
ithF
eSO
4af
ter
duct
ion
ofur
aniu
m,
orco
lorim
etric
ally
with
asco
rbic
acid
.di
umw
asde
term
ined
byfla
me
phot
omet
ry,
and
carb
onat
eab
sorp
tion-
grav
imet
ricm
etho
d.
Na 4
UO
2~C
O3!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.F
irst,
sodi
umur
anat
ew
aspr
ecip
itate
dfr
omU
O2~
NO
3!2
solu
tion
with
NaO
H,
was
hed
and
diss
olve
din
aso
lutio
nof
NaH
CO
3.T
hesa
ltw
asob
tain
edby
evap
orat
ing
the
solu
tion
toa
low
volu
me
whi
lepa
ssin
gC
O 2th
roug
hth
eso
lutio
n.T
hesa
ltw
asth
enre
crys
talli
zed
from
wat
erto
yiel
da
brig
htye
llow
prod
uct
with
the
CO 3
/Ura
tioof
3:3.
2.S
ourc
ean
dpu
rity
ofm
ater
ials
used
wer
eno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.E
.Bun
ce,N
.H.F
urna
m,a
ndR
.T.M
undy
,Rep
ortM
-423
8,19
47.
583583IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
tric
arbo
nato
diox
oura
nate~VI!
;N
a 4U
O2~
CO
3!3;
@120
76-5
2-7#
~2!
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#~3
!W
ater
;H 2
O;
@773
2-18
-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc
.78
,59
78–
83~1
956!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
9c 2
/mol
dm2
3 :1.
0–
4.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Na 4
UO
2~C
O3!
3in
NaC
lsol
utio
nsat
26°Ca
NaC
l(c
2/m
oldm
23 )
Na 4
UO
2~C
O3!
3
c 1/m
oldm
23
1.0
0.07
5
1.5
0.03
4
2.0
0.02
0
2.5
0.01
2
3.0
0.00
6
3.5
0.00
3
4.0
0.00
25
a Com
posi
tion
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsco
ntai
ning
exce
ssso
lidw
ere
equi
libra
ted
inP
yrex
orpo
lyflu
oroe
thyl
ene
bottl
esfo
rat
leas
t10
days
,bu
tus
ually
for
3or
mor
ew
eeks
toen
sure
equi
libriu
m.
The
agita
tion
was
carr
ied
out
ina
cons
tant
-tem
pera
ture
room
.T
heco
nten
tsof
the
bottl
ew
ere
then
cent
rifug
ed,
and
both
the
solid
and
liqui
dw
ere
anal
yzed
for
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
n,ur
aniu
mw
asde
term
ined
eith
erby
pote
ntio
met
rictit
ratio
nw
ithF
eSO
4af
ter
redu
ctio
nof
uran
ium
,or
colo
rimet
rical
lyw
ithas
corb
icac
id.
Sod
ium
was
dete
rmin
edby
flam
eph
otom
etry
,an
dca
rbon
ate
Na 4
UO
2~C
O3!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.F
irst,
sodi
umur
anat
ew
aspr
ecip
itate
dfr
omU
O2~
NO
3!2
solu
tion
with
NaO
H,
was
hed
and
diss
olve
din
aso
lutio
nof
NaH
CO
3.T
hesa
ltw
asth
enob
tain
edby
evap
orat
ing
the
solu
tion
toa
low
volu
me
whi
lepa
ssin
gC
O 2th
roug
hth
eso
lutio
n.T
hesa
ltw
asre
crys
talli
zed
from
wat
erto
yiel
da
brig
htye
llow
prod
uct
with
the
CO
3/U
ratio
of3:
3.2.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Co
~1!
@1 ~2!
~3!
Va
T/
c 2 a C Me
Iso
we
lea
eq co the
for
co de re So
by
J
conc
entr
atio
nin
the
satu
rate
dso
lutio
n,ur
aniu
mw
asde
term
ined
eith
erby
pote
ntio
met
rictit
ratio
nw
ithF
eSO
4af
ter
redu
ctio
nof
uran
ium
,or
colo
rimet
rical
lyw
ithas
corb
icac
id.
Sod
ium
was
dete
rmin
edby
flam
eph
otom
etry
,an
dca
rbon
ate
byab
sorp
tion-
grav
imet
ricm
etho
d.
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 H.
S.
Har
ned
and
B.
B.
Ow
en,Th
eP
hys
ica
lC
he
mis
try
of
Ele
ctro
lytic
So
lutio
ns~
Rei
nhol
d,N
ewY
ork,
1950!
,p.
476.
2 W.E
.Bun
ce,N
.H.F
urna
m,a
ndR
.T.M
undy
,Rep
ortM
-423
8,19
47.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
tric
arbo
nato
diox
oura
nate~VI!
;N
a 4U
O2~
CO
3) 3
;20
76-5
2-7#
Sod
ium
carb
onat
e;N
a2C
O3
;@4
97-1
9-8#
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#W
ater
;H 2
O;
@773
2-18
-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc7
8,59
78–
83~1
956!
.
riabl
es:
Pre
pare
dby
:
K:
299
/mol
dm2
35
0.22
–1.
72/m
oldm
23 :
0.28
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
26°C
ofN
a 4UO
2~C
O3!
3in
Na 2
CO
3–
NaC
lsol
utio
nsa
Na 2
CO
3a
(c2
/mol
dm2
3 )N
a 4U
O2~
CO
3!3
(c1
/mol
dm2
3 )
0.22
0.12
6
0.72
0.06
3
1.22
0.03
4
1.72
0.02
0
ompo
sitio
nof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.A
llso
lutio
nsco
ntai
ned
also
0.28
mol
dm2
3N
aCl.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
cont
aini
ngex
cess
solid
reeq
uilib
rate
din
Pyr
exor
poly
fluor
oeth
ylen
ebo
ttles
for
atst
10da
ys,
but
usua
llyfo
r3
orm
ore
wee
ksto
ensu
reui
libriu
m.
The
agita
tion
was
carr
ied
out
ina
nsta
nt-t
empe
ratu
rero
om.
The
cont
ents
ofth
ebo
ttle
wer
en
cent
rifug
ed,
and
both
the
solid
and
liqui
dw
ere
anal
yzed
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
ncen
trat
ion
inth
esa
tura
ted
solu
tion,
uran
ium
was
term
ined
eith
erby
pote
ntio
met
rictit
ratio
nw
ithF
eSO
4af
ter
duct
ion
ofur
aniu
m,
orco
lorim
etric
ally
with
asco
rbic
acid
.di
umw
asde
term
ined
byfla
me
phot
omet
ry,
and
carb
onat
eab
sorp
tion-
grav
imet
ricm
etho
d.
Na 4
UO
2~C
O3!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.F
irst,
sodi
umur
anat
ew
aspr
ecip
itate
dfr
omU
O2~
NO
3!2
solu
tion
with
NaO
H,
was
hed
and
diss
olve
din
aso
lutio
nof
NaH
CO
3.T
hesa
ltw
asth
enob
tain
edby
evap
orat
ing
the
solu
tion
toa
low
volu
me
whi
lepa
ssin
gC
O 2th
roug
hth
eso
lutio
n.T
hesa
ltw
asre
crys
talli
zed
from
wat
erto
yiel
da
brig
htye
llow
prod
uct
with
the
CO
3/U
ratio
of3:
3.2.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.N
a 2C
O3
was
are
gent
grad
epr
oduc
t.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.E
.Bun
ce,N
.H.F
urna
m,a
ndR
.T.M
undy
,Rep
ortM
-423
8,19
47.
584584 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
tric
arbo
nato
diox
oura
nate~VI!
;N
a 4U
O2~
CO
3) 3
;@1
2076
-52-
7#~2
!S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
C.
A.
Bla
ke,
C.
F.
Col
eman
,K
.B
.B
row
n,D
.G
.H
ill,
R.
S.
Low
rie,
and
J.M
.S
chm
itt,
J.A
m.
Che
m.
Soc
.78
,59
78–
83~1
956!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
9c 2
/mol
dm2
3 :0.
5–
3.5
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Na 4
UO
2~C
O3!
3in
NaC
lO4
solu
tions
at26
°Ca
NaC
lO4
(c2
/mol
dm2
3 )N
a 4U
O2~
CO
3!3
(c1
/mol
dm2
3 )
0.5
0.13
4
1.0
0.05
6
1.5
0.02
8
2.0
0.01
5
2.5
0.00
8
3.0
0.00
5
3.5
0.00
2
a Com
posi
tion
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
Add
ition
alin
form
atio
n:A
ctiv
ityso
lubi
lity
prod
uct
ofN
a 4U
O2~
CO
3!3
was
calc
ulat
edby
the
auth
ors
from
the
solu
bilit
yda
taus
ing
the
met
hod
ofH
arne
dan
dO
wen
1fo
rhi
ghly
solu
ble
salts
,an
dre
port
edto
beKsp0
5@N
a1#4
@UO
2~C
O3) 34
2]5
0.01
mol5
dm2
15.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsco
ntai
ning
exce
ssso
lidw
ere
equi
libra
ted
inP
yrex
orpo
lyflu
oroe
thyl
ene
bottl
esfo
rat
leas
t10
days
,bu
tus
ually
for
3or
mor
ew
eeks
toen
sure
equi
libriu
m.
The
agita
tion
was
carr
ied
out
ina
cons
tant
-tem
pera
ture
room
.T
heco
nten
tsof
the
bottl
ew
ere
then
cent
rifug
ed,
and
both
the
solid
and
liqui
dw
ere
anal
yzed
for
uran
ium
,so
dium
,an
dca
rbon
ate.
Dep
endi
ngon
uran
ium
Na 4
UO
2~C
O3!
3w
aspr
epar
edac
cord
ing
toR
ef.
2.F
irst,
sodi
umur
anat
ew
aspr
ecip
itate
dfr
omU
O2~
NO
3!2
solu
tion
with
NaO
H,
was
hed
and
diss
olve
din
aso
lutio
nof
NaH
CO
3.T
hesa
ltw
asth
enob
tain
edby
evap
orat
ing
the
solu
tion
toa
low
volu
me
whi
lepa
ssin
gC
O 2th
roug
hth
eso
lutio
n.T
hesa
ltw
asre
crys
talli
zed
from
wat
erto
yiel
da
brig
htye
llow
prod
uct
with
the
CO
3/U
ratio
of3:
3.2.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
Co
~1!
@1 ~2!
~3!
~4!
Va
T/
c 2 c 3 a C Me
Iso
we
lea
eq co the
for
co de re So
by
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
d 0
Tem
pera
ture
:pr
ecis
ion
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
mon
ium
tric
arbo
nato
diox
oura
nate~V
I!;
H4!
4UO
2~C
O3!
3;@1
8077
-77-
5#S
odiu
mtr
icar
bona
todi
oxou
rana
te~VI!
;N
a 4U
O2~
CO
3!3;
2076
-52-
7#W
ater
;H 2
O;
@773
2-18
-5#
N.
N.
Elo
vski
khan
dA
.I.
Sta
brov
skii,
Zh.
Neo
rg.
Khi
m.6,
1300
–1~
1961
!.
riabl
es:
Pre
pare
dby
:
K:
296
lera
tioof
com
pone
nts~1
!an
d~2
!J.
Hala
Exp
erim
enta
lDat
a
Con
cent
ratio
nof
uran
ium
in(N
H 4!4U
O2~
CO
3!3
/Na 4
UO
2~C
O3!
3so
lutio
nssa
tura
ted
at23
°C
NH
4!4U
O2~
CO
3!3
~g!a
Na 4
UO
2~C
O3!
3
~g!a
Mol
era
tiob
U~g
dm2
3 !cU
~mol
dm2
3 !c,d
3.97
1.95
1:0.
512
6.40
0.53
1
2.91
3.01
1:1
169.
750.
713
1.93
4.00
1:2
154.
710.
650
1.44
4.49
1:3
142.
000.
597
1.16
4.77
1:4
132.
100.
555
0.96
4.97
1:5
117.
230.
493
ass
ofth
esa
lteq
uilib
rate
dw
ith10
mL
wat
er.
ole
ratio
ofsa
ltsin
the
initi
alsy
stem
.on
cent
ratio
nof
uran
ium
inth
esa
tura
ted
solu
tions
.al
cula
ted
byco
mpi
ler.
ditio
nali
nfor
mat
ion:
hen
mix
ture
sof
(NH 4
! 4U
O2~
CO
3!3
and
Na 4
UO
2~C
O3!
3w
ere
diss
olve
dst
able
solu
tions
wer
eob
tain
edw
ithur
aniu
mco
ncen
trat
ion
her
than
that
corr
espo
ndin
gto
the
bina
rysa
lt/w
ater
syst
ems,
i.e.,
;66
gdm
23
or0.
28m
oldm
23
uran
ium
for
Na 4U
O2~
CO
3!3,
and
;30
dm2
3or
0.13
mol
dm2
3ur
aniu
mfo
r(N
H 4! 4
UO
2~C
O3!
3.1
The
effe
ctw
asas
crib
edto
the
form
atio
nof
am
ixed
sodi
um/a
mm
oniu
mar
bona
todi
oxou
rana
te.
Fro
ma
solu
tion
initi
ally
cont
aini
ngbo
thsa
ltsin
a1:
1m
ole
ratio
the
mix
edsa
ltN
a2~
NH
4!2U
O2~
CO
3!3•
H2O
uld
bepr
ecip
itate
dw
ithet
hano
l.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.M
ixtu
res
ofbo
thsa
ltsin
vario
usm
ole
ratio
sw
ere
equi
libra
ted
with
10m
Lw
ater
for
16h.
Met
hod
ofur
aniu
mde
term
inat
ion
inth
esa
tura
ted
solu
tions
was
not
repo
rted
.S
olid
phas
esw
ere
not
inve
stig
ated
.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
585585IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Am
mon
ium
tric
arbo
nato
diox
oura
nate~V
I!;
(NH
4!4U
O2~
CO
3!3;
@180
77-7
7-5#
~2!
Wat
er;
H 2O
;@7
732-
18-5#
F.
Gio
litti
and
V.
Vec
chia
relli
,G
azz.
Chi
m.
Ital.3
5,17
0–
81~1
985!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
2–
360
J.H
a´ la
Exp
erim
enta
lDat
a
Com
posi
tion
ofso
lutio
nsof
(NH 4!
4UO
2~C
O3!
3sa
tura
ted
atva
rious
tem
pera
ture
s
Tem
pera
ture
~°C
!U
~g/1
00g!
aC
O2
~g/1
00g!
aN
H3
~g/1
00g!
aU
:CO
2:N
H3b
18.6
2.71
1.54
0.79
51:
3.08
:4.1
0
36.5
3.09
2.29
1.18
81:
4.01
:5.3
5
48.3
3.03
2.71
1.35
1:4.
95:6
.35
62.0
—3.
171.
62—
87.3
3.95
3.96
2.02
71:
5.52
:7.1
5
a g/10
0g
satu
rate
dso
lutio
n.b M
ole
ratio
inth
esa
tura
ted
solu
tions
.
Add
ition
alin
form
atio
n:T
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.A
t18
.6°C
the
com
posi
tion
ofth
esa
tura
ted
solu
tion
corr
espo
nde
toth
efo
rmul
ara
tioof
the
salt.
The
auth
ors
repo
rted
the
solu
bilit
yof
(NH
4!4U
O2~
CO
3!3
atth
iste
mpe
ratu
reas
6.04
gsa
lt/10
0g
satu
rate
dso
lutio
n.U
sing
the
auth
ors’
valu
eof
uran
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
n,co
mpi
ler
calc
ulat
edth
eso
lubi
lity
as5.
95g
salt/
10g
solu
tion
(m15
0.12
1m
olkg
21 ).
At
high
erte
mpe
ratu
res
the
salt
deco
mpo
sed
inth
eso
lutio
n.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Ala
rge
exce
ssof
the
solid
was
agita
ted
for
betw
een
4an
d24
hw
ithw
ater
ina
ther
mos
tate
dba
that
the
desi
red
tem
pera
ture
.T
hecl
ear
solu
tion
was
anal
yzed
for
uran
ium~
grav
imet
rical
lyas
U 3O
8!,
CO
2,an
dN
H3
~met
hods
not
spec
ified!.
(NH
4!4U
O2~
CO
3!3
was
prep
ared
byad
ditio
nto
aso
lutio
nof
UO
2~N
O3!
2he
ated
to50
°Cco
ncen
trat
edso
lutio
nof
(NH
4!2C
O3
ina
twof
old
exce
ssov
erth
eam
ount
nece
ssar
yto
obta
ina
clea
ral
kalin
eso
lutio
n,an
dth
enco
ncen
trat
edam
mon
iaso
lutio
n.C
ryst
als
of(N
H 4! 4
UO
2~C
O3!
3pr
ecip
itate
don
cool
ing.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:
Co
~1!
(N ~2!
@1 ~3!
Va
T/
Mo (
a M b M c C d C Ad
W hig
g tric
co Me
Iso
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Cal
cium
tric
arbo
nato
diox
oura
nate~V
I!;
Ca 2
UO
2~C
O3!
3;#
Wat
er;
H 2O
;@7
732-
18-5#
M.
Bac
hele
t,E
.C
heyl
an,
M.
Dou
is,
and
J.C
.G
oule
tte,
Bul
l.S
oc.
Chi
m.
Fra
nce
565
–9~1
952!
.
riabl
es:
Pre
pare
dby
:
K:
273
–32
8J.
Ha´ la
Exp
erim
enta
lDat
a
Com
posi
tion
ofso
lutio
nsof
Ca 2U
O2~
CO
3!3
satu
rate
dat
vario
uste
mpe
ratu
res
a
Tem
pera
ture
~°C
!U
~gdm
23 !
Mg 2
UO
2~C
O3!
3
(c1
/mol
dm2
3 )b
00.
330.
0013
86
231.
340.
0056
30
403.
680.
0154
6
555.
020.
0210
8
ompo
sitio
nth
eth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
alcu
late
dby
com
pile
r.
ditio
nali
nfor
mat
ion:
2UO
2~C
O3!
3hy
drol
yzed
abov
e60
°C.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Ca 2U
O2~
CO
3!3•
10H
2Ow
asob
tain
edby
pass
ing
ast
ream
ofC
O2
thro
ugh
asl
urry
ofst
oich
iom
etric
amou
nts
ofU
O3•
1/2H
2Oan
dC
aCO 3
for
24h,
filte
ring
off
the
unre
acte
dm
ater
ial
and
evap
orat
ion.
Ana
lysi
s~fo
und/
calc
ulat
edfo
ran
hydr
ous
salt
obta
ined
byhe
atin
gth
ede
cahy
drat
eat
80°C
,m
ass
%!:
UO
3
54.4
0/54
.40,
CaO
20.8
/21.
1,C
O2
24.8
/24.
9.S
ourc
ean
dpu
rity
ofm
ater
ials
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
586586 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Mag
nesi
umtr
icar
bona
todi
oxou
rana
te~V
I!;
Mg 2
UO
2~C
O3!
3;@
#~2
!W
ater
;H 2
O;
@773
2-18
-5#
M.
Bac
hele
t,E
.C
heyl
an,
M.
Dou
is,
and
J.C
.G
oule
tte,
Bul
l.S
oc.
Chi
m.
Fra
nce
565
–9~1
952!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
6–
325
J.H
a´ la
Exp
erim
enta
lDat
a
Com
posi
tion
ofso
lutio
nsof
Mg 2U
O2~
CO
3!3
satu
rate
dat
vario
uste
mpe
ratu
res
a
Tem
pera
ture
~°C
!U
~gdm
23 !
Mg 2
UO
2~C
O3!
3
~gdm
23 !b
Mg 2
UO
2~C
O3!
3
(c1
/mol
dm2
3 )b
2339
.081
.71
0.16
38
3241
.586
.94
0.17
43
4257
.812
1.1
0.24
28
5281
.016
9.7
0.34
03
a Com
posi
tion
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
b Cal
cula
ted
byco
mpi
ler.
Add
ition
alin
form
atio
n:M
g 2U
O2~
CO
3!3
hydr
olyz
edab
ove
70°C
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.M
g 2UO
2~C
O3!
3•18
H2O
was
obta
ined
bypa
ssin
ga
stre
amof
CO
2th
roug
ha
slur
ryof
stoi
chio
met
ricam
ount
sof
UO
3•1/
2H2O
and
basi
cm
agne
sium
carb
onat
efo
r2
–3
days
unde
rag
itatio
n.T
here
acta
nts
diss
olve
dan
dth
esa
ltw
asob
tain
edei
ther
bycr
ysta
lliza
tion
orby
prec
ipita
tion
with
acet
one
asst
rong
lyef
flore
scen
tye
llow
crys
tals
.A
naly
sis~f
ound
/cal
cula
ted
for
anhy
drou
ssa
ltob
tain
edat
60°C
,m
ass
%!:
UO
357
.35/
57.0
0,M
gO16
.15/
16.2
0,C
O 226
.5/2
6.80
.S
ourc
ean
dpu
rity
ofm
ater
ials
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
@ ~2!
Va
T/
a C b C Ad
Ca
Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.4.
Sod
ium
Pen
taki
s„ca
rbon
ato…
Bisˆdi
oxou
rana
te„V
I…‰„6-…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
pent
acar
bona
tobi
s$d
ioxo
uran
ate~V
I!%;
6~U
O2!
2~C
O3!
5;@
#W
ater
;H 2
O;
@773
2-18
-5#
M.B
ache
let,
E.C
heyl
an,M
.Dui
s,an
dJ.
C.G
oule
tte,B
ull.
Soc
.C
him
.F
ranc
e55
–60
~195
2!.
riabl
es:
Pre
pare
dby
:
K:
293
J.H
ala
Exp
erim
enta
lDat
aso
lutio
nin
wat
erof
Na 6~
UO
2!2~
CO
3!5
satu
rate
dat
20°C
was
repo
rted
toco
ntai
n19
0g
UO
3/d
m3
solu
tion.
Fro
mth
isva
lue
the
com
pile
rlc
ulat
edth
eco
ncen
trat
ion
ofur
aniu
mto
be0.
664
mol
dm2
3 .C
ompo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
inve
stig
ated
.
ditio
nali
nfor
mat
ion:
Ref
.1,
Na 6
~UO
2!2~
CO
3!5
was
repo
rted
tobe
am
ixtu
reof
Na
4UO
2~C
O3!
3an
dN
a 2U
O2~
CO
3!2•
xH2O
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Na 6~U
O2!
2~C
O3!
5w
aspr
epar
edby
prol
onge
dag
itatio
nof
asl
urry
ofU
O3•
1/2H
2Oan
dN
aHC
O 3~m
ole
ratio
1:3!
inw
ater
bypa
ssin
gth
roug
hit
ast
ream
ofC
O2
gas
atro
omte
mpe
ratu
re.
Fro
mth
ere
sulti
ngso
lutio
n,th
esa
ltw
aspr
ecip
itate
dat
50°C
.S
ourc
ean
dpu
rity
ofm
ater
ials
used
not
spec
ified
.1
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Ref
eren
ces:
1 L.A
.M
cCla
ine,
E.
P.
Bul
lwin
kel,
and
J.C
.H
uggi
ns,
Pro
ceed
ings
Pea
cefu
lUse
sA
tom
icE
nerg
y,G
enev
a,19
55,
Vol
.8,
p.26
.
587587IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Str
ontiu
mtr
icar
bona
todi
oxou
rana
te~VI!
;S
r 2U
O2~
CO
3!3;
@#
~2!
Wat
er;
H 2O
;@7
732-
18-5#
M.B
ache
let,
E.C
heyl
an,M
.Dui
s,an
dJ.
C.G
oule
tte,B
ull.
Soc
.C
him
.F
ranc
e56
5–
9~195
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
2J.
Hala
Exp
erim
enta
lDat
aT
heso
lubi
lity
at19
°Cof
Sr 2U
O2~
CO
3!3
inw
ater
was
repo
rted
tobe
1.7
gdm2
3sa
ltor
0.65
5g
uran
ium
/dm3
solu
tion
~usi
ngth
ela
tter
valu
eth
eco
mpi
ler
calc
ulat
edc15
2.75
310
23
mol
dm2
3 !.
The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asno
tin
vest
igat
ed.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.S
r 2UO
2~C
O3!
3•9H
2Ow
aspr
epar
edei
ther
bypr
olon
ged
pass
ing
ast
ream
ofC
O 2th
roug
ha
slur
ryof
UO 3•1/
2H2O
and
SrC
O 3un
der
agita
tion,
orby
doub
lede
com
posi
tion
reac
tion
betw
een
Na 2
UO
2~C
O3!
3an
dS
rCl 2.
Ana
lysi
s~f
ound
/cal
cula
ted
for
the
anhy
drou
ssa
lt,m
ass
%!:U
O3
46.7
5/45
.7,S
rO32
.70/
33.1
5,C
O2
20.5
5/21
.15.
Sou
rce
and
purit
yof
mat
eria
lsus
edno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Co
~1!
Na
~2!
Va
T/
A ca Ad
In Me
No
J
he
othe
rwis
e~se
eab
ove!,
the
satu
rate
dso
lutio
nsw
ere
stab
lew
ithre
spec
tto
hydr
olys
isw
hen
expo
sed
tolig
ht.
eith
erin
solu
tion
orin
the
form
ofa
susp
ensi
onin
wat
er,
onU
O2~
OH
! 2.
The
salts
wer
ere
crys
talli
zed,
and
char
acte
rized
byel
emen
tala
naly
sis.
Est
imat
edE
rror
:P
reci
sion
ofte
mpe
ratu
reor
solu
bilit
yno
tre
port
ed.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
diox
obis~
form
ate!
;U
O2~
CH
O2!
2;@1
6984
-59-
1#F
orm
icac
id;
CH 2
O2;
@64-
18-6
#W
ater
;H 2
O;
@773
2-18
-5#
A.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce45
,62
4–
6~1
929!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%:0
.012
–93
.93
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofaq
ueou
sso
lutio
nsof
form
icac
idsa
tura
ted
with
UO
2~C
HO
2!2
at25
°C
CH
2O2
(100
w2
/mas
s%)
UO
3
~mas
s%!
UO
2~C
HO
2!2
(100
w1
/mas
s%)b
Sol
idph
asea
0.01
20.
076
A
0.28
50.
368
A
0.80
60.
759
A
1.33
1.07
A
4.88
3.06
A
8.23
4.87
A
10.8
76.
05c
A1
B
12.3
35.
717.
19B
20.1
64.
125.
19B
31.5
72.
523.
17B
44.8
51.
151.
45B
50.6
70.
765
0.96
3B
61.3
20.
325
0.40
9B
72.2
90.
116
0.14
6B
85.8
60.
058
0.07
3B
93.9
30.
057
0.07
2B
:U
O2~
CH
O2!
2•U
O3•
3H2O
,@
#;B
:U
O2~
CH
O2!
2•H
2O,
@#.
alcu
late
dby
com
pile
run
der
the
assu
mpt
ion
that
UO
2~C
HO
2!2
isth
esp
ecie
sex
istin
gin
thes
eso
lutio
ns.
orth
isso
lutio
nth
eau
thor
repo
rted
7.99
gU
O2~
CH
O2!
2•H
2Ope
r10
0g
solu
tion.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:E
stim
ated
Err
or:
Isot
herm
alm
etho
dus
ed.
The
solid
used
for
expe
rimen
tsw
asU
O2~
CH
O2!
2•H
2O.
No
furt
her
deta
ilsw
ere
repo
rted
exce
ptth
ateq
uilib
ratio
nw
asca
rrie
dou
tin
the
dark
.
Pre
cisi
onof
tem
pera
ture
mea
sure
men
tor
solu
bilit
yde
term
inat
ion
not
repo
rted
.
588588 JIRI HALA
5.5.
Ura
nium
„V
I…D
ioxo
Bis
„ca
rbox
ylat
es…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obis~
carb
oxyl
ates!
~2!
Wat
er;
H 2O
;@7
732-
18-5#
G.
Cou
rtoi
s,C
ompt
.R
end.1
58,
1511
–4~
1914
!;15
8,16
88–
91~1
914!
;B
ullS
oc.
Chi
m.
Fra
nce3
3,17
61–
73~1
923!
.
Var
iabl
es:
Pre
pare
dby
:
Con
stan
tte
mpe
ratu
reJ.
Ha
´ la
Exp
erim
enta
lDat
a
Sol
ubili
ties
ofur
aniu
m~V
I!di
oxob
is~ca
rbox
ylat
es!in
wat
er
Dic
arbo
xyla
te,
UO 2
Ry•
xH2O
aT
empe
ratu
re~°
C!
Sol
ubili
tyb
~gsa
lt/10
0g
satu
rate
dso
lutio
n!
UO
2~H
CO
2!2•
H2O
;~f
orm
ate!
;@
157.
20c
UO
2~C
2H3O
2!2•
2H2O
;~a
ceta
te!;
@615
9-44
-0#17
7.73
d
UO
2~C
3H5O
2!2•
2H2O
;~p
ropi
onat
e!;@
198.
48
UO
2~C
4H7O
2!2•
2H2O
;~b
utyr
ate!;
@17
10.5
3
UO
2~C
4H7O
2!2•
2H2O
;~is
o-bu
tyra
te!;
@20
4.25
UO
2~C
5H9O
2!2•
2H2O
;~v
aler
ate!;
@14
3.72
UO
2~C
H2~
OH
!CO
2!2;
~gly
cola
te!;
@19
15.6
0e
UO
2~C
H3C
H~O
H!C
O2!
2;~la
ctat
e!;@
182.
92f
UO
2C4H
4O6•
4H2O
;~t
artr
ate!;
@17
3.82
UO
2~C
7H5O
2!2;
~ben
zoat
e!;@
180.
32
UO
2~C
7H4~
OH
!O2!
2•2H
2O;
~sal
icyl
ate!;
@18
0.52
a Com
posi
tion
ofth
ein
itial
solid
salt.
Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b F
orsa
ltspr
epar
edas
hydr
ates
itw
asno
tst
ated
whe
ther
the
repo
rted
solu
bilit
ies
refe
rto
the
hydr
ate
oran
hydr
ous
salt.
Onl
yfo
rt
salic
ylat
eth
eso
lubi
lity
was
expl
icitl
yre
port
edas
that
ofth
edi
hydr
ate.
c Sat
urat
edso
lutio
nsof
uran
ium
diox
ide
form
ate
wer
eun
stab
le;
even
inth
eda
rka
basi
csa
ltpr
ecip
itate
dou
taf
ter
24h.
d Sat
urat
edso
lutio
nw
asun
stab
lein
the
dark
.W
hen
expo
sed
todi
fuse
light
,a
basi
csa
lt,U
O2~
C2H
3O2!
2•U
O3•
4H2O
,pr
ecip
itate
dou
t.e S
atur
ated
solu
tions
wer
eun
stab
le,
and
aba
sic
salt,
UO
2~C
H2~
OH
!CO
2!2•
UO
3•4H
2O,
prec
ipita
ted
out
inth
eda
rk.
f Sat
urat
edso
lutio
nsst
able
inth
eda
rk.
Whe
nex
pose
dto
light
,a
gree
nhy
drol
ytic
prod
uct
prec
ipita
ted
out,
and
asm
allq
uant
ityof
CO
2
was
prod
uced
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed,
node
tails
repo
rted
.U
nles
sst
ated
The
salts
wer
epr
epar
edby
actio
nof
the
corr
espo
ndin
gac
id,
Co
~1!
~2!
~3!
Va
T/
10 a A b C c F
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obis~
acet
ate!;
UO
2~C
2H3O
2!2;
@541
-09-
3#A
cetic
acid
;C 2
H4O
2;@6
4-19
-7#
Wat
er;
H 2O
;@7
732-
18-5#
A.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce41
,12
91–
3~19
27!.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%:
0.27
–97
.8J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofaq
ueou
sso
lutio
nsof
acet
icac
idsa
tura
ted
with
UO
2~C
2H3O
2!2
at25
°C
C2H
4O2
00w
2/m
ass%
)U
O3
~mas
s%!
UO
2~C
2H3O
2!2
(100
w1
/mas
s%)b
Sol
idph
asea
C2H
4O2
(100
w2
/mas
s%)
UO
3
~mas
s%!
UO
2~C
2H3O
2!2
(100
w1
/mas
s%)b
Sol
idph
asea
0.27
00.
544
A30
.73.
114.
22C
0.49
90.
883
A36
.92.
883.
91C
0.61
81.
11A
41.1
2.65
3.60
C
0.74
71.
28A
46.4
2.36
3.20
C
1.20
2.07
A56
.71.
872.
54C
2.32
4.12
A1B
65.9
1.38
1.87
C
2.49
4.47
B77
.40.
831
1.13
C
2.64
4.89
B1C
79.9
0.85
81.
16C1
D
2.87
4.54
6.16
C81
.60.
645
0.87
5D
4.55
4.07
5.52
C88
.20.
405
0.55
0D
11.3
3.79
5.14
C97
.80.
306
0.41
5D
24.8
3.30
4.48
C
:U
O2~
C2H
3O2!
2•2U
O2~
OH
! 2,
@#;
B:
UO
2~C
2H3O
2!2•
UO
2~O
H! 2•3H
2O,
@#;
C:
UO
2~C
2H3O
2!2•
2H2O
,@6
159-
44-0#
;D
:O
2~C
2H3O
2!2•
C2H
4O2•
2H2O
,@
#.al
cula
ted
byco
mpi
ler
unde
rth
eas
sum
ptio
nth
atU
O2~
C2H
3O2!
2is
the
spec
ies
exis
ting
inth
ese
solu
tions
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
cess
UO 2
~C2H
3O2!
2•2H
2Oor
UO
2~C
2H3O
2!2•
2UO
2~O
H! 2
dth
eso
lutio
nof
acet
icac
idof
the
desi
red
conc
entr
atio
nre
kept
ata
tem
pera
ture
clos
eto
100
°Cfo
rse
vera
lhou
rsin
der
tosp
eed
uphy
drol
ytic
reac
tions
.T
hem
ixtu
rew
asth
enth
erm
osta
ted
at25
°Cun
der
freq
uent
stirr
ing
until
equi
libriu
mw
asre
ache
d.E
xper
imen
tsw
ere
cond
ucte
din
flask
spr
otec
ted
from
light
.E
quili
brat
ion
time
and
met
hods
used
toan
alyz
eth
esa
tura
ted
solu
tions
wer
eno
tre
port
ed.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
589589IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obis~
acet
ate!;
UO
2~C
2H3O
2!2;
@541
-09-
3#~2
!W
ater
;H 2
O;
@773
2-18
-5#J.
Zeh
ente
r,M
onat
sh.
Che
m.
21,
235
–55
~190
0!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:288
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofU
O 2~C
2H3O
2!2
was
repo
rted
tobe
7.69
4g
salt
in10
0g
wat
erat
15°C
.C
ompo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
inve
stig
ated
.
Add
ition
alIn
form
atio
n:It
isno
tcl
ear
from
the
docu
men
tw
heth
erth
ere
port
edso
lubi
lity
refe
rsto
the
anhy
drou
ssa
ltor
toth
edi
hydr
ate,
UO
2~C
2H3O
2!2•
2H2O
,@6
159-
44-0#
.T
here
port
edso
lubi
lity
valu
eis
alm
ost
iden
tical
with
that
repo
rted
inR
ef.
1.It
was
repo
rted
that
solu
tions
ofU
O 2~C
2H3O
2!2
are
fully
stab
lew
hen
kept
inth
eda
rk.W
hen
expo
sed
tolig
ht,t
heso
lutio
nsbe
cam
etu
rbid
,an
da
spar
ingl
yso
lubl
ehy
drol
ytic
prod
uct
prec
ipita
ted.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed,
node
tails
spec
ified
.U
O2~
C2H
3O2!
2w
asa
prod
uct
ofM
erck
~pur
iss.!
.
Est
imat
edE
rror
:P
reci
sion
ofte
mpe
ratu
reor
solu
bilit
ym
easu
rem
entn
otre
port
ed.
Ref
eren
ces:
1 G.
Cou
rtoi
s,C
ompt
.R
end.1
58,
1511
~191
4!.
Co
~1!
~2!
~3!
Va
T/
10 (1 a A U b C Me
Ex
an we
or
J
.4.
Ura
nium
~VI!
diox
obis~
acet
ate!–
tri-n
-but
ylph
osph
ate
–w
ater
syst
em.L
egen
dto
the
phas
edi
agra
m:
~A!
two-
phas
ere
gion
;~B!
two
uid
phas
esin
equi
libriu
mw
ithU
O 2~C
2H3O
2!2•
2H2O
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2H3O
2!2•
2H2O
;~D
!sa
tura
ted
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2H3O
2!2•
2H2O
and
UO 2
~C2H
3O2!
2•H
2O;
~E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ith
2~C
2H3O
2!2•
H2O
;~F
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2H3O
2!2•
H2O
and
UO 2
~C2H
3O2!
2;~G
!sa
tura
ted
solu
tions
inui
libriu
mw
ithU
O 2~C
2H3O
2!2;
~H!
unsa
tura
ted
aque
ous-
orga
nic
solu
tions
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.D
esire
dam
ount
sof
the
salt,
n-bu
tylp
hosp
hate
and
wat
erw
ere
equi
libra
ted
inse
aled
ssam
poul
espr
otec
ted
from
light
ina
ther
mos
tate
dba
th.
eco
ncen
trat
ion
ofur
aniu
man
dw
ater
inth
eeq
uilib
rium
ases
wer
ede
term
ined
grav
imet
rical
lyan
dby
Fis
cher
met
hod,
resp
ectiv
ely.
Com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asde
term
ined
byS
chre
inem
aker
sm
etho
d.D
etai
lsof
the
met
hods
used
wer
eid
entic
alw
ithth
ose
inR
ef.
1.
UO
2~C
2H3O
2!2•
2H2O
used
was
are
agen
tgr
ade
prod
uct,
sour
cew
asno
tsp
ecifi
ed.
Mon
ohyd
rate
and
anhy
drou
ssa
ltw
ere
obta
ined
byva
cuum
dehy
drat
ion.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1 A.
V.
Bal
uev,
A.
A.
Lum
pov,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
6,19
6~1
984!
.
590590 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obis~
acet
ate!;
UO
2~C
2H3O
2!2;
@541
-09-
3#~2
!P
hosp
horic
acid
tri-n-
buty
lest
er;
C 12H
27O
4P;
@126
-73-
8#~3
!W
ater
;H 2
O;
@773
2-18
-5#
A.
V.
Bal
uev,
A.
Yu.
Sili
n,I.
G.
Sug
lubo
va,
and
A.
P.
Tar
anov
,R
adio
khim
iya3
0,44
2–
7~1
988!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
100
w2
/mas
s%:5
0.8
–71
.610
0w
3/m
ass%
:0–
3.16
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofbi
nary
tri-n-
buty
lph
osph
ate
–w
ater
solu
tions
satu
rate
dw
ithU
O2~
C2H
3O2!
2,an
dph
ase
diag
ram
ofth
eU
O2~
C2H
3O2!
2–
C12
H27
O4P
–H 2
Osy
stem
at25
°C
C12
H27
O4P
(100
w2
/mas
s%)b
H2O
(100
w3
/mas
s%)
UO
2~C
2H3O
2!2
(100
w1
/mas
s%)
Sol
idph
ase
a
71.6
33.
1625
.21
A
64.3
52.
2033
.45
A
58.0
21.
6340
.35
B
53.8
61.
0845
.12
B1C
50.4
80.
3649
.16
C
50.8
049
.2cC
a ~A!
UO
2~C
2H3O
2!2•
2H2O
,@6
159-
44-0#
;~B
!U
O2~
C2H
3O2!
2•H
2O,
@#;
~C!
UO
2~C
2H3O
2!2,
@541
-09-
3#b C
alcu
late
dby
com
pile
rby
diffe
renc
e.c S
olub
ility
ofan
hydr
ous
UO 2~
C2H
3O2!
2in
dry
tri-n
-but
ylph
osph
ate;m
15
2.50
mol
kg2
1~a
utho
rs!.
Pha
sedi
agra
m~F
ig.
4!of
the
UO 2
~C2H
3O2!
2–
C12
H27
O4P
–H 2
Osy
stem
at25
°C:
FIG
liq so UO
eq Me
Iso
tri-
gla
Th
ph
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.7.
Sod
ium
Tris
„ac
etat
o…
Dio
xour
anat
e„V
I…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
tris~
acet
ato!
diox
oura
nate~
VI!
;U
O2~
C2H
3O2) 3
;@1
4286
-13-
6#S
odiu
mac
etat
e;C 2H
3O2N
a;@1
27-0
9-3#
Ace
ticac
id;
C 2H
4O2;
@64-
19-7
#W
ater
;H 2
O;
@773
2-18
-5#
B.
P.
Nik
olsk
ii,V
.I.
Par
amon
ova,
L.A
.K
otch
evan
ova,
and
G.
G.
Pam
filov
a,K
him
iya
Tra
nsur
anov
ych
Osk
oloc
hnyc
hE
lem
ento
v~C
hem
istr
yof
Tra
nsur
aniu
mE
lem
ents
and
Fis
sion
Pro
duct
s!,A
NS
SS
R,
Otd
.O
bsh.
Tek
h.K
him
.,19
–26
,19
67.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
18–
4.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
typr
oduc
tof
NaU
O 2~C
2H3O
2!3
at20
°C
C2H
3O2N
a
2/m
oldm
23 )
Ksp
a
(103
mol
2dm
26 )
pHb
0.18
5.2
3.9
–4.
4
0.25
5.9
4.0
–4.
8
0.5
5.9
4.6
–5.
2
1.0
5.0
4.4
–6.
3
2.0
3.3
4.3
–6.
3
3.0
2.05
5.6
–6.
7
4.0
1.54
5.5
–6.
9
sp5
@Na1
#@U
O2~
C2H
3O2) 32
];it
was
obta
ined
byth
eau
thor
sas
the
prod
uct
ofex
perim
enta
llyde
term
ined
sodi
uman
dur
aniu
mco
n-nt
ratio
nsin
the
satu
rate
dso
lutio
ns.
The
auth
ors
assu
med
that
atac
etat
eco
ncen
trat
ions
used
all
U~V
I!w
aspr
esen
tas
the
O2~
C2H
3O2)
32io
n.T
heva
lues
Ksp
repo
rted
are
aver
age
valu
esof
seve
rald
eter
min
atio
nsca
rrie
dou
tin
the
pHra
nge
indi
cate
d.H
rang
ew
ithin
whi
chK
spre
mai
ned
cons
tant
.Con
cent
ratio
nof
acet
icac
idus
edto
adju
stpH
was
nots
peci
fied.
Atp
Hhi
gher
than
thos
eho
wn,
anin
crea
seofK
sw
asob
serv
edw
hich
was
ascr
ibed
byth
eau
thor
sto
hydr
olys
isof
U~V
I!.
The
seda
taw
ere
not
cons
ider
edw
hen
vera
geK
spw
asca
lcul
ated
.A
tpH
,4
ade
crea
seinK
spw
asob
serv
eddu
eto
the
pres
ence
ofhi
gher
acet
icac
idco
ncen
trat
ion.
Nei
ther
ese
data
wer
eco
nsid
ered
inth
eca
lcul
atio
nof
the
aver
age
Ksp
valu
es.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
oa
give
nvo
lum
eof
aso
lutio
nw
ithde
sire
dco
mpo
sitio
nN
aUO 2~C
2H3O
2!3
was
adde
din
anou
ntto
obta
ina
satu
rate
dso
lutio
nco
ntai
ning
exce
ssso
lid.
The
pHof
the
solu
tions
was
adju
sted
byad
ditio
nsof
acet
icac
id.
The
solu
tions
wer
eal
low
edto
stan
dfo
rse
vera
lday
sat
room
tem
pera
ture
,an
dth
ensh
aken
ina
ther
mos
tate
dba
thfo
r2
h.S
atur
ated
solu
tions
wer
ean
alyz
edfo
rur
aniu
mgr
avim
etric
ally
asU 3
O8
afte
rre
mov
alof
acet
ate
from
the
sam
ple
byre
peat
edev
apor
atio
nw
ithH
NO
3,an
dfo
rso
dium
grav
imet
rical
lyas
Na/
Zn/
UO 2
acet
ate
orN
a 2SO
4.T
hepH
was
dete
rmin
edw
itha
glas
sel
ectr
ode.
Atta
inin
geq
uilib
rium
was
confi
rmed
byus
ing
othe
req
uilib
ratio
npr
oced
ures
such
aspr
ecip
itatio
nof
NaU
O 2~C
2H3O
2!3
inth
ede
sire
dm
ediu
m,
orby
cool
ing
to20
°Ca
solu
tion
satu
rate
dpr
evio
usly
at85
°C.
Not
hing
spec
ified
.
Est
imat
edE
rror
:~a
utho
rs!.
Tem
pera
ture
:pr
ecis
ion6
0.2
K.
Con
cent
ratio
nof
uran
ium
orso
dium
:pr
ecis
ion
6~1
–3!
%.
pH:
prec
isio
n60.
05pH
units
.K
sp:
6~3
–5!
%.
591591IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.6.
Ura
nium
„V
I…D
ioxo
bis„ac
etat
e…
Dih
ydra
te
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obis~
acet
ate!
dihy
drat
e;U
O2~
C2H
3O2!
2•2H
2O;
@615
9-44
-0#~2
!S
olve
nts
M.
Szi
lagy
,A
t.K
ozle
m.2
,49
–52
~196
0!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2~C
2H3O
2!2•
2H2O
at25
°Cin
four
solv
ents
Sol
vent
UO
2~C
2H3O
2!2•
2H2O
a
(100
w1
/mas
s%)
Pht
halic
acid
di-n-
octy
lest
er;
C 24H
38O
4;@1
17-8
4-0#
~PO
E!0.
0008
7
Pht
halic
acid
di-n-
buty
lest
er;
C 16H
22O
4;@8
4-74
-2#
~PB
E!0.
0502
Pho
spho
ricac
idtr
i-n-bu
tyle
ster
;C 1
2H27
O4P
;@1
26-7
3-8#
~TB
P!3.
17
Pho
spho
ricac
iddi
-n-bu
tyle
ster
;C 8
H19
O4P
;@1
07-6
6-4#
~DB
P!30
.9
a Com
pile
ras
sum
edth
eso
lubi
lity
data
refe
rred
toth
edi
hydr
ate.
Thi
sw
asno
tst
ated
expl
icitl
yin
the
orig
inal
docu
men
tw
here
the
solu
bilit
yda
taw
ere
repo
rted
tore
fer
to‘‘u
rany
lace
tate
.’’
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Sol
vent
sw
ere
equi
libra
ted
with
exce
ssso
lidin
ath
erm
osta
ted
bath
ingr
ound
-gla
ssst
oppe
red
vess
els.
Equ
ilibr
atio
ntim
ew
as5,
26,
14,
and
70da
ysfo
rP
OE
,P
PE
,T
BP
,an
dD
BP
,re
spec
tivel
y.T
heco
ncen
trat
ion
ofur
aniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
fluor
imet
rical
lyin
case
ofP
OE
and
PB
E,
orgr
avim
etric
ally
asU
3O8
inca
seof
TB
Pan
dD
BP
.S
atur
ated
solu
tions
did
not
show
any
prec
ipita
tion
ofa
solid
orco
lor
chan
geov
era
perio
dof
12m
onth
s.C
ompo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
repo
rted
.
UO
2~C
2H3O
2!2•
2H2O
was
are
agen
tgr
ade
prod
uct,
sour
ceno
tsp
ecifi
ed.T
heso
lven
tsw
ere
com
mer
cial
prod
ucts
ofun
spec
ified
purit
yw
ithde
nsiti
es~g
cm2
3 !of
0.98
25~P
OE!
,1.
0478
~PB
E!,
1.05
51~T
BP!
,an
d0.
9732
~DB
P!.
Est
imat
edE
rror
:P
reci
sion
ofte
mpe
ratu
reor
solu
bilit
ym
easu
rem
entn
otre
port
ed.
Co
~1!
Na
~2!
~3!
~4!
Va
T/
c 2 (c a K ce U b p s a th Me
Iso
the
am
J
NaC
lO4;
@760
1-89
-0#2.
01.
03.
03.
9
NH
4NO
3;@6
484-
52-2#
2.0
1.0
3.0
3.2
C2H
3O2N
H4;
@631
-61-
8#2.
01.
03.
03.
3
a At
20°C
.A
vera
geva
lue
oftw
oor
thre
em
easu
rem
ents
inth
epH
rang
ew
here
Ksp
was
inde
pend
ent
ofpH
.S
olut
ions
cont
aine
dun
spec
ified
conc
entr
atio
nof
acet
icac
idus
edto
adju
stpH
.
mpe
ratu
re~°
C!
C2H
4O2
(c3
/mol
dm2
3 )pH
aK
spb
(103
mol
2dm
26 )
200.
095.
294.
2
0.34
5.01
4.0
1.04
4.43
4.1
4.16
0.1c
500.
15.
587.
6
0.5
4.87
7.5
1.0
4.59
7.9
7.76
0.1c
750.
15.
5115
.4
0.5
4.88
15.7
1.0
4.47
15.9
15.7
60.
2c
Hof
the
equi
libriu
mso
lutio
ns.
t20
°C.
All
solu
tions
cont
aine
d1.
00m
oldm2
3C
2H3O
2Na
and
2.00
mol
dm2
3N
aNO
3.ve
rage
valu
e.
ditio
nali
nfor
mat
ion:
eK
spva
lues
obta
ined
inC 2H
3O2N
a–
C 2H
4O2
and
C 2H
3O2N
a–
NaN
O 3~C
2H3O
2Na/
NaN
O 3ra
tio1:
1,io
nic
stre
ngth
2–
5m
oldm2
3 !
lutio
nsw
ere
used
toca
lcul
ate
theKsp0
valu
eas
Ksp0
5K
spg
625
(2.7
60.
2)3
102
3m
ol2
dm2
6 .T
hem
ean
activ
ityco
effic
ientg
6w
aslc
ulat
edac
cord
ing
toR
ef.
1us
ing
Åan
d3.
8Å
for
the
para
met
erof
clos
est
ion
appr
oach
inN
aUO
2~C
2H3O
2!3
inC
2H3O
2Na
–C 2
H4O
2
dC 2
H3O
2Na
–N
aNO 3
solu
tions
,re
spec
tivel
y.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
oa
give
nvo
lum
eof
aso
lutio
nw
ithde
sire
dco
mpo
sitio
nN
aUO 2~C
2H3O
2!3
was
adde
din
anou
ntto
obta
ina
satu
rate
dso
lutio
nco
ntai
ning
exce
ssso
lid.
epH
ofth
eso
lutio
nsw
asad
just
edby
addi
tions
ofac
etic
id.
The
solu
tions
wer
eal
low
edto
stan
dfo
rse
vera
lday
sat
omte
mpe
ratu
re,
and
then
shak
enin
ath
erm
osta
ted
bath
for
h.S
atur
ated
solu
tions
wer
ean
alyz
edfo
rur
aniu
mav
imet
rical
lyas
U 3O
8af
ter
rem
oval
ofac
etat
efr
omth
em
ple
byre
peat
edev
apor
atio
nw
ithH
NO
3,an
dfo
rso
dium
avim
etric
ally
asN
a/Z
n/U
O 2ac
etat
eor
Na 2S
O4.
The
pHw
aste
rmin
edw
itha
glas
sel
ectr
ode.
Atta
inin
geq
uilib
rium
was
nfirm
edby
usin
got
her
equi
libra
tion
proc
edur
essu
chas
prec
ipita
tion
ofN
aUO 2
~C2H
3O2!
3in
the
desi
red
med
ium
,or
byco
olin
gto
20°C
aso
lutio
nsa
tura
ted
prev
ious
lyat
85°C
.
Not
hing
spec
ified
.
Est
imat
edE
rror
:~a
utho
rs!.
Tem
pera
ture
:pr
ecis
ion6
0.2
Kin
the
first
two
serie
sof
mea
sure
men
ts,60.
1K
inth
eth
irdse
ries.
Con
cent
ratio
nof
uran
ium
orso
dium
:pr
ecis
ion
6~1
–3!
%.
pH:
prec
isio
n60.
05pH
units
.
Ref
eren
ces:
1 G.H
arne
dan
dB
.Ow
en,Th
eP
hys
ica
lCh
em
istr
yo
fE
lect
roly
teS
olu
tion
s~R
ussi
anT
rans
l.!~M
osco
w,
1952
!,p.
371.
592592 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
tris~
acet
ato!
diox
oura
nate~
VI!
;N
aUO
2~C
2H3O
2) 3
;@1
4286
-13-
6#~2
!S
odiu
mac
etat
e;C 2H
3O2N
a;@1
27-0
9-3#
~3!
Ace
ticac
id;
C 2H
4O2
;@6
4-19
-7#
~4!
Sal
ts~5
!W
ater
;H 2
O;
@773
2-18
-5#
B.
P.
Nik
olsk
ii,V
.I.
Par
amon
ova,
L.A
.K
otch
evan
ova,
and
G.
G.
Pam
filov
a,K
him
iya
Tra
nsur
anov
ych
Osk
oloc
hnyc
hE
lem
ento
v~C
hem
istr
yof
Tra
nsur
aniu
mE
lem
ents
and
Fis
sion
Pro
duct
s!,A
NS
SS
R,O
td.O
bsh.
Tek
h.K
him
.,19
67,p
p.19
–26
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3;32
3;34
8c 2
/mol
dm2
3 :1
–3
c 3/m
oldm
23 :
0.06
–2
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
typr
oduc
tof
NaU
O 2~C
2H3O
2!3
atva
rious
ioni
cst
reng
ths
and
tem
pera
ture
s
Sal
tS
alt
(c4
/mol
dm2
3 )C
2H3O
2Na
(c2
/mol
dm2
3 )C
2H4O
2
(c3
/mol
dm2
3 )K
spa
(103
mol
2dm
26 )
——
2.99
0.06
–1.
32.
0560.
07
C2H
3O2N
H4;
@631
-61-
8#3.
00—
23.
346
0.03
2.00
1.00
13.
360.
1
NaC
lO4
;@7
601-
89-0#
2.00
1.00
13.
960.
1
NaN
O3
;@7
631-
99-4#
2.00
1.00
14.
160.
1
NH
4NO
3;
@648
4-52
-2#1.
002.
001
3.546
0.04
2.00
1.00
15.
260.
1
a At
20°C
.A
vera
geva
lue
oftw
oor
thre
em
easu
rem
ents
inth
epH
rang
ew
here
Ksp
was
inde
pend
ent
ofpH
.
Sal
tS
alt
(c4
/mol
dm2
3 )C
2H3O
2Na
(c2
/mol
dm2
3 )Io
nic
stre
ngth
~mol
dm2
3 !K
spa
(103
mol
2dm
26 )
NaN
O3;
@763
1-99
-4#1.
01.
02.
04.
5
1.5
1.5
3.0
3.5
2.0
2.0
4.0
2.8
2.5
2.5
5.0
2.4
2.0
1.0
3.0
4.1
3.0
1.0
4.0
3.4
4.0
1.0
5.0
2.6
Te
a p b A c A Ad
Th
so ca an Me
Iso
the
am Th
ac ro 2 gr sa gr de co
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.9.
Ura
nium
„V
I…D
ioxo
Bis
„ca
rbox
ylat
es…¿
Org
anic
Sol
vent
¿W
ater
Ter
nary
Sys
tem
s
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~tr
ifluo
roac
etat
e!;U
O2~
C2F
3O2!
2;49
74-8
0-0#
Die
thyl
ethe
r;C 4
H10
O;
@60-
29-7
#W
ater
;H 2
O;
@773
2-18
-5#
V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
Rad
iokh
imiy
a,17
,62
–5
~197
5!.
riabl
es:
Pre
pare
dB
y:
K:
298
0w
2/m
ass
%:
17.5
8–
92.0
30
w3
/mas
s%
:50.
20–
5.92
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rydi
ethy
let
her–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2F3O
2!2,
and
phas
edi
agra
mof
the
UO
2~C
2F3O
2!2–
H10
O–
H2O
syst
emat
25°C
C4H
10O
(100
w2
/mas
s%
)bH
2O(1
00w
3/m
ass
%)
UO
2~C
2F3O
2!2a
(100
w1
/mas
s%
)
92.0
30.
207.
77
84.6
30.
7614
.61
60.8
72.
5136
.62
59.2
32.
6138
.16
17.5
85.
9276
.50c
heeq
uilib
rium
solid
phas
ew
asU
O2~
C2F
3O2!
2•2C
4H10
Oin
alls
olut
ions
.
alcu
late
dby
com
pile
rby
diffe
renc
e.
this
syst
emth
em
ole
ratio
H 2O/U
O2~
C2F
3O2!
2is
2:1,
and
the
syst
emca
n,ac
cord
ing
toth
eau
thor
s,be
cons
ider
edto
repr
esen
tm
olte
n
O2~
C2F
3O2!
2•2H
2O•1.
5C 4
H10
O.
Ats
altc
once
ntra
tions
high
erth
an77
mas
s%
itw
asno
tpos
sibl
eto
inve
stig
ate
the
solu
bilit
yis
othe
rm
ueto
high
visc
osity
ofth
esy
stem
whi
chpr
even
ted
the
solid
phas
eto
sepa
rate
.F
orth
esa
me
reas
onth
eso
lubi
lity
ofU
O2~
C2F
3O2!
2in
ater
coul
dno
tbe
dete
rmin
ed.
ase
diag
ram~
Fig
.5!
ofth
eU
O 2~C
2F3O
2!2–
C4H
10O
–H
2Osy
stem
at25
°C.
593593IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.8.
Sod
ium
Zin
cT
ris„di
oxou
rani
um„V
I……
Non
akis„ac
etat
e…
Com
pone
nts:
Orig
inal
mea
sure
men
ts:
~1!
Sod
ium
zinc
tris$
uran
ium~
VI!
diox
o%no
naki
s~ace
tate!
;N
aZn~
UO
2!3~
C2H
3O2) 9
;@
#~2
!E
than
ol;
C 2H
6O;
@64-
17-5
#~3
!W
ater
;H 2
O;
@773
2-18
-5#
G.
W.
B.
van
der
Ling
en,
Ana
lyst5
7,37
6–
7~1
932!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8E
than
ol/v
olum
e%
:50
–10
0J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyin
etha
nol–
wat
erm
ixtu
res
ofN
aZn
~UO
2!3~
C2H
3O2!
9at
25°C
a
C2H
6O(w
2/v
ol.
%)
NaZ
n~U
O2!
3~C
2H3O
2!9
~g/1
00cm
3so
lutio
n!
500.
967
600.
316
700.
194
800.
119
900.
062
960.
042
100
0.13
2
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.F
rom
aque
ous
solu
tions
the
salt
crys
talli
zes
ashe
xahy
drat
e,1
and
itw
asno
tm
entio
ned
whe
ther
itre
tain
sth
ew
ater
ofcr
ysta
lliza
tion
whe
nin
equi
libriu
mw
ithet
hano
l–w
ater
mix
ture
sor
with
neat
etha
nol.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
The
solu
bilit
yof
the
salt
was
dete
rmin
edby
evap
orat
ing
todr
ynes
sof
anal
iquo
tof
the
satu
rate
dso
lutio
n,an
dw
eigh
ing
the
resi
due.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 H.
H.
Bar
ber
and
I.M
.K
olth
off,
J.A
m.
Che
m.
Soc
.50
,16
25~1
928!
.
Co
~1!
@5 ~2!
~3!
Va
T/
10 10 Co
C4
a T b C c In U d w Ph
J
22
32
2
stro
ngly
hygr
osco
pic.
Tem
pera
ture
:pr
ecis
ion6
0.05
K~a
utho
rs!.
Sol
ubili
ty:
prec
isio
nno
tre
port
ed.
Ref
eren
ces:
1 V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
inC
om
ple
xF
orm
atio
na
nd
Ext
ract
ion
of
La
nth
an
ide
sa
nd
Act
inid
es~
inR
ussi
an!
~Nau
ka,
Leni
ngra
d,19
74!,p.
35.
2 A.
Wei
sber
ger,
E.
Pos
kaue
r,J.
Rid
dick
,an
dE
.T
ups,
Org
an
icS
olv
en
ts~R
ussi
anT
rans
l.!~I
L,M
osco
w,
1958
!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~tr
ifluo
roac
etat
e!;U
O2~
C2F
3O2!
2;49
74-8
0-0#
Pho
spho
ricac
idtr
i-n-bu
tyle
ster
;C 1
2H27
O4P
;@1
26-7
3-8#
Wat
er;
H 2O
;@7
732-
18-5#
A.
V.
Bal
uev,
A.
A.
Lum
pov,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
7,27
4–
80~1
985!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%
:3.9
5–
57.7
00
w3
/mas
s%
:0–
12.6
7
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rytr
i-n-bu
tylp
hosp
hate
–w
ater
solu
tions
satu
rate
dw
ithU
O2~
C2F
3O2!
2,an
dph
ase
diag
ram
ofth
eU
O2~
C2F
3O2!
2–
2H27
O4P
–H 2
Osy
stem
at25
°C
C12
H27
O4P
~100
w2
/mas
s%!
bH
2O~1
00w
3/m
ass
%!U
O2~
C2F
3O2!
2
~100
w1
/mas
s%!
Sol
idph
asea
57.7
00
42.3
0cA
55.6
80.
1044
.22
A
55.7
80.
3143
.91
A
52.9
41.
0146
.05
A1B
51.5
41.
4746
.99
B
51.0
31.
7447
.23
B
48.7
01.
5349
.77
B
47.8
01.
9750
.23
B
45.3
51.
8652
.79
B
44.7
31.
8653
.41
B
43.0
22.
6154
.37
B
41.4
72.
6555
.88
B
35.9
63.
5260
.52
B
35.7
33.
2661
.01
B
28.8
85.
2065
.92
B1C
27.9
95.
0067
.01
B1C
26.9
35.
4167
.66
B1C
7.62
10.5
081
.88
C
3.95
12.6
783
.38
C
a ~A!
UO
2~C
2F3O
2!2,
@549
74-8
0-0#;
~B!
UO
2~C
2F3O
2!2•
H2O
,@
#;~C
!un
spec
ified
hydr
olyz
edfo
rms
ofU
O 2~C
2F3O
2!2.
b Cal
cula
ted
byco
mpi
ler
bydi
ffere
nce.
c Sol
ubili
tyof
anhy
drou
sU
O 2~C
2F3O
2!2
indr
ytr
i-n-b
utyl
phos
phat
e;m15
1.48
mol
kg2
1~c
ompi
ler!.
Pha
sedi
agra
m~F
ig.
6!of
the
UO 2
~C2F
3O2!
2–
C12
H27
O4P
–H 2
Osy
stem
at25
°C:
594594 JIRI HALA
FIG
.5.
Ura
nium
~VI!
diox
obi
s~tr
ifluo
roac
etat
e!–di
ethy
let
her–
wat
ersy
stem
.Le
gend
toth
eph
ase
diag
ram
:~A
!tw
o-ph
ase
regi
on;~B
!
unsa
tura
ted
hom
ogen
eous
wat
er–
diet
hyle
ther
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2F3O
2!2•
C4H
10O
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
phas
esw
ere
brou
ght
toeq
uilib
rium
bysh
akin
gth
emin
seal
edgl
ass
ampo
ules
.T
heco
ncen
trat
ion
ofur
aniu
man
dw
ater
inth
eeq
uilib
rium
phas
esw
asde
term
ined
grav
imet
rical
ly~met
hod
not
spec
ified!
and
byF
isch
erm
etho
d,re
spec
tivel
y.A
llw
ork
was
cond
ucte
din
atm
osph
ere
ofdr
yai
rsi
nce
the
solv
ate
ofU
O~CF
O!
was
Anh
ydro
usU
O 2~C
2F3O
2!2
and
itsso
lvat
ew
ere
prep
ared
acco
rdin
gto
Ref
.1.D
ieth
ylet
her
was
purifi
edac
cord
ing
toR
ef.
2,dr
ied
over
sodi
umm
etal
,an
ddi
still
edon
are
ctifi
catio
nco
lum
n.
Est
imat
edE
rror
:
Co
~1!
@5 ~2!
~3!
Va
T/
10 10 Co
C1
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
hydr
olyz
ein
syst
ems
cont
aini
ngm
ore
than
3%–
4%of
wat
er,
and
tohi
ghvi
scos
ityof
conc
entr
ated
solu
tions
.R
efer
ence
s:1 A
.V
.B
alue
v,S
.V
.Z
hdan
ovsk
ii,an
dI.
G.
Sug
lubo
va,
Rad
iokh
imiy
a20,
68~1
978!
.2 V
.M
.V
dove
nko,
A.
V.
Bal
uev,
and
I.G
.S
uglu
bova
,in
Co
mp
lex
Fo
rma
tion
an
dE
xtra
ctio
no
fL
an
tha
nid
es
an
dA
ctin
ide
s~in
Rus
sian
!~N
auka
,Le
ning
rad,
1974!,
p.35
.3 H
.Ir
ving
and
D.
N.
Edg
ingt
on,
J.In
org.
Nuc
l.C
hem
.10
,30
6~1
959!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~m
onoc
hlor
oace
tate!;
2~C
2H2O
2Cl! 2
;@1
5221
-09-
7#D
ieth
ylet
her;
C 4H
10O
;@6
0-29
-7#
Wat
er;
H 2O
;@7
732-
18-5#
V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
Rad
iokh
imiy
a17,
65–
8~1
975!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%
:87.
97–
99.6
90
w3
/mas
s%
:0–
1.30
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rydi
ethy
let
her–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2H2O
2Cl! 2
,an
dph
ase
diag
ram
ofth
e
2~C
2H2O
2Cl! 2
–C
4H10
O–
H2O
syst
emat
25°C
C4H
10O
~100
w2
/mas
s%!
bH
2O~1
00w
2/m
ass
%!U
O2~
C2H
2O2C
l! 2~1
00w
1/m
ass
%!S
olid
phas
ea
99.6
90
0.31
cA
98.4
70.
111.
42A1
B
98.4
70.
111.
42B
96.3
50.
253.
40B
96.5
70.
333.
10B
89.2
90.
6110
.10
B
87.9
71.
3010
.73
B
!U
O2~
C2H
2O2C
l! 2,
@152
21-0
9-7#;
~B!
UO
2~C
2H2O
2Cl! 2•H
2O,
@#.
alcu
late
dby
com
pile
rby
diffe
renc
e.ol
ubili
tyof
UO
2~C
2H2O
2Cl! 2
indr
ydi
ethy
leth
er;m
15
6.80
310
23
mol
kg2
1~c
ompi
ler!.
ditio
nali
nfor
mat
ion:
eto
hydr
olys
isin
mix
ture
sco
ntai
ning
high
eram
ount
ofw
ater
itw
aspo
ssib
leto
inve
stig
ate
syst
ems
with
mol
era
tios
H2O
/sal
t,3
only
.as
edi
agra
m~F
ig.
7!of
the
UO 2
~C2H
2O2C
l! 2–
C4H
10O
–H
2Osy
stem
at25
°C.
FIG
.7.
Ura
nium
~VI!
diox
obi
s~m
onoc
hlor
oace
tate!–
diet
hyle
ther
–w
ater
syst
em.L
egen
dto
the
phas
edi
agra
m:
~A!
two
liqui
dph
ases
;~B!
unsa
tura
ted
hom
ogen
eous
wat
er–
diet
hyle
ther
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2H2O
2Cl! 2
H2O
;~D
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2
~C2H
2O2C
l! 2;
~E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2H2O
2Cl! 2
and
UO 2
~C2H
2O2C
l! 2•H
2O.
595595IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.6.
Ura
nium
~VI!
diox
obi
s~tr
ifluo
roac
etat
e!–tr
i-n-b
utyl
phos
phat
e–
wat
ersy
stem
.Le
gend
toth
eph
ase
diag
ram
:~A
!tw
o-ph
ase
regi
on;~
b!un
satu
rate
daq
ueou
s-or
gani
cso
lutio
ns;
~C!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2F3O
2!2
and
UO 2
~C2F
3O2!
2•H
2O;~
D!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2F3O
2!2•
H2O
;~E
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2F3O
2!2.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Cal
cula
ted
amou
nts
ofth
esa
lt,tr
i-n-
buty
lpho
spha
tean
dw
ater
wer
eeq
uilib
rate
din
seal
edgl
ass
ampo
ules
prot
ecte
dfr
omlig
htin
ath
erm
osta
ted
bath
for
4da
ysw
hich
was
foun
dsu
ffici
ent
for
equi
libriu
mto
bere
ache
d.T
heph
ases
wer
ese
para
ted
byce
ntrif
ugat
ion
and
anal
yzed
asin
Ref
.1.
Equ
ilibr
ium
solid
phas
esw
ere
iden
tified
byS
chre
inem
aker
sm
etho
d.It
was
not
poss
ible
toob
tain
the
who
leso
lubi
lity
curv
edu
eto
the
stro
ngte
nden
cyof
the
salt
to
UO
2~C
2F3O
2!2
and
itsm
onoh
ydra
tew
ere
prep
ared
acco
rdin
gto
Ref
.2.
Tri-
n-bu
tyl
phos
phat
ew
aspu
rified
acco
rdin
gto
Ref
.3,
and
then
dist
illed
at15
mm
Hg
pres
sure
.F
ract
ion
boili
ngat
172
–17
5°C
was
colle
cted
for
use.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Co
~1!
UO
~2!
~3!
Va
T/
10 10 Co
UO
a ~A b C c S Ad
Du
Ph
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~m
onoc
hlor
oace
tate!;
2~C
2H2O
2Cl! 2
;@1
5221
-09-
7#P
hosp
horic
acid
tri-n-
buty
lest
er;
C 12H
27O
4P;
@126
-73-
8#W
ater
;H 2
O;
@773
2-18
-5#
A.
V.
Bal
uev,
A.
A.
Lum
pov,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
7,28
0–
8~1
985!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%
:30.
97–
60.3
0w
3/m
ass
%:0
.09
–3.
50
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rytr
i-n-bu
tyl
phos
phat
e–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2H2O
2Cl! 2
,an
dph
ase
diag
ram
ofth
e
2~C
2H2O
2Cl! 2
–C
12H
27O
4P–
H 2O
syst
emat
25°C
C12
H27
O4P
~100
w2
/mas
s%!
bH
2O~1
00w
3/m
ass
%!U
O2~
C2H
2O2C
l! 2~1
00w
1/m
ass
%!S
olid
phas
ea
30.9
73.
5065
.53
A
30.9
42.
8566
.21
A
35.2
92.
6862
.03
A
41.9
31.
1256
.95
A
43.2
51.
0655
.69
A
43.2
81.
0355
.69
A
44.9
71.
3053
.73
A
46.0
41.
0152
.95
A
48.0
30.
9251
.05
A
50.2
60.
9248
.82
A
55.1
60.
4844
.36
A1B
59.4
10.
1240
.47
B
60.3
00.
0939
.61
B
!U
O2~
C2H
2O2C
l! 2•H
2O,
@#;
~B!
UO
2~C
2H2O
2Cl! 2
@152
21-0
9-7#.
alcu
late
dby
com
pile
rby
diffe
renc
e.
ditio
nali
nfor
mat
ion:
mpo
sitio
nof
the
phas
esre
port
edar
eav
erag
eva
lues
oftw
oto
thre
em
easu
rem
ents
.E
xtra
pola
ted
valu
eof
the
solu
bilit
yof
2~C
2H2O
2Cl! 2
indr
ytr
i-n-b
utyl
phos
phat
ew
asre
port
edto
beap
prox
imat
ely
m15
1.45
mol
kg2
1 .In
am
ore
rece
ntdo
cum
ent,
1m
1
1.43
mol
kg2
1w
asre
port
ed.
Pha
sedi
agra
m~F
ig.
8!of
the
UO 2
~C2H
2O2C
l! 2–
C12
H27
O4P
–H 2
Osy
stem
at25
°C.
596596 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
phas
esw
ere
brou
ght
toeq
uilib
rium
bysh
akin
gth
emin
seal
edgl
ass
ampo
ules
.T
heco
ncen
trat
ion
ofur
aniu
man
dw
ater
inth
eeq
uilib
rium
phas
esw
asde
term
ined
grav
imet
rical
ly~met
hod
not
spec
ified!
and
byF
isch
erm
etho
d,re
spec
tivel
y.
Anh
ydro
usU
O 2~C
2H2O
2Cl! 2
and
itshy
drat
ew
ere
prep
ared
and
anal
yzed
acco
rdin
gto
Ref
.1.
Die
thyl
ethe
rw
aspu
rified
acco
rdin
gto
Ref
.2,
drie
dov
erso
dium
met
al,
and
dist
illed
ona
rect
ifica
tion
colu
mn.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1 V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
Co
mp
lex
Fo
rma
tion
an
dE
xtra
ctio
no
fL
an
tha
nid
es
an
dA
ctin
ide
s~in
Rus
sian
!~N
auka
,Le
ning
rad,
1974!,
p.35
.2 A
.W
eisb
erge
r,E
.P
oska
uer,
J.R
iddi
ck,
and
E.
Tup
s,O
rga
nic
So
lve
nts
~Rus
sian
Tra
nsl.!~I
L,M
osco
w,
1958
!.
Co
~1!
UO
~2!
~3!
Va
T/
10 10 Co
UO
a ~A b C Ad
Co
UO
5
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
byS
chre
inem
aker
sm
etho
d.T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1 A.V
.Bal
uev,
A.Y
u,S
ilin,
I.G
.Sug
lubo
va,a
ndA
.P.T
aran
ov,
Rad
iokh
imiy
a30,
442
~198
8!.
2 A.
V.
Bal
uev,
S.
V.
Zhd
anov
skii,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
0,68
~197
8!.
3 V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
inC
om
ple
xF
orm
atio
na
nd
Ext
ract
ion
of
La
nth
an
ide
sa
nd
Act
inid
es~
inR
ussi
an!
~Nau
ka,
Leni
ngra
d,19
74!,p.
35.
4 H.
Irvi
ng,
and
D.
N.
Edg
ingt
on,
J.In
org.
Nuc
l.C
hem
.10
,30
6~1
959!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~tr
ichl
oroa
ceta
te!;U
O2~
C2O
2Cl 3
! 2;
1740
-41-
0#D
ieth
ylet
her;
C 4H
10O
;@6
0-29
-7#
Wat
er;
H 2O
;@7
732-
18-5#
V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
Rad
iokh
imiy
a17,
58–
62~1
975!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%
:1.3
–98
.80
w3
/mas
s%
:0.2
–19
.4
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rydi
ethy
let
her–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2O2C
l 3! 2
,an
dph
ase
diag
ram
ofth
e
2~C
2O2C
l 3! 2
–C
4H10
O–
H2O
syst
emat
25°C
C4H
10O
~100
w2
/mas
s%!
bH
2O~1
00w
3/m
ass
%!U
O2~
C2O
2Cl 3
! 2~1
00w
1/m
ass
%!S
olid
phas
ea
1.30
19.4
079
.30
A
2.85
17.0
080
.15
A
5.70
12.6
081
.70
A
5.95
13.1
580
.90
A1B
4.53
13.1
282
.35
A1B
8.70
12.8
078
.50
A1B
10.2
216
.43
73.3
5B
16.6
520
.00
63.3
5B1
C
19.1
816
.95
63.8
7B1
C
17.3
018
.30
64.4
0C
25.1
011
.70
63.2
0C
47.4
04.
8847
.72
C
50.9
84.
0544
.97
C
60.7
02.
5036
.80
C
59.7
71.
8538
.38
C1D
69.8
51.
6028
.55
D
81.2
00.
9017
.90
D
85.2
31.
2513
.25
D
86.8
30.
6012
.57
D1E
98.8
00.
201.
00E
a ~A!
UO
2~C
2O2C
l 3! 2•3H
2O,
@#;
~B!
UO
2~C
2O2C
l 3! 2•2H
2O•C
4H10
O,
@#;
~C!
UO
2~C
2O2C
l 3! 2•2H
2O•2C
4H10
O,
@#;
~D!
UO
2~C
2O2C
l 3! 2•H
2O•C
4H10
O,
@#;
~E!
UO
2~C
2O2C
l 3! 2•C
4H10
O,
@#.
b Cal
cula
ted
byco
mpi
ler
bydi
ffere
nce.
Pha
sedi
agra
m~F
ig.
9!of
the
UO 2
~C2O
2Cl 3
! 2–
C4H
10O
–H
2Osy
stem
at25
°C.
597597IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.8.
Ura
nium
~VI!
diox
obi
s~m
onoc
hlor
oace
tate!–
tri-n
-but
ylph
osph
ate
–w
ater
syst
em.
Lege
ndto
the
phas
edi
agra
m:
~A!
two-
phas
ere
gion
;~B
!un
satu
rate
daq
ueou
s–
orga
nic
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2H2O
2Cl! 2
;~D
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2
~C2H
2O2C
l! 2an
dU
O 2~C
2H2O
2Cl! 2•H
2O;~
E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2H2O
2Cl! 2•H
2O;
~F!
UO
2~C
2H2O
2Cl! 2•H
2Oin
equi
libriu
mw
ithsa
tura
ted
orga
nic
and
aque
ous
solu
tions
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Cal
cula
ted
amou
nts
ofth
esa
lt,tr
i-n-
buty
lpho
spha
te,
and
wat
erw
ere
equi
libra
ted
inse
aled
glas
sam
poul
espr
otec
ted
from
light
ina
ther
mos
tate
dba
thfo
r4
days
whi
chw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
phas
esw
ere
sepa
rate
dby
cent
rifug
atio
nan
dan
alyz
edas
inR
ef.
2.E
quili
briu
mso
lidph
ases
wer
eid
entifi
ed
UO
2~C
2H2O
2Cl! 2
and
itsm
onoh
ydra
tew
ere
prep
ared
acco
rdin
gto
Ref
.3.T
ri-n-
buty
lpho
spha
tew
aspu
rified
acco
rdin
gto
Ref
.4,
and
then
dist
illed
at15
mm
Hg
pres
sure
.F
ract
ion
boili
ngat
172
–17
5°C
was
colle
cted
for
use.
Est
imat
edE
rror
:
Co
~1!
@2 ~2!
~3!
Va
T/
10 10 Co
UO
J
Fis
cher
met
hod,
resp
ectiv
ely.
All
wor
kw
asco
nduc
ted
inth
eat
mos
pher
eof
dry
air
sinc
eth
ehy
drat
esan
dhy
drat
o-so
lvat
esof
UO
2~C
2O2C
l 3! 2
are
stro
ngly
hygr
osco
pic.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1 V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
va,
inC
om
ple
xF
orm
atio
na
nd
Ext
ract
ion
of
La
nth
an
ide
sa
nd
Act
inid
es~
inR
ussi
an!
~Nau
ka,
Leni
ngra
d,19
74!,p.
35.
2 A.
Wei
sber
ger,
E.
Pos
kaue
r,J.
Rid
dick
,an
dE
.T
ups,
Org
an
icS
olv
en
ts~R
ussi
anT
rans
l.!~I
L,M
osco
w,
1958
!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~tr
ichl
oroa
ceta
te!;U
O2~
C2O
2Cl 3
! 2;
1740
-41-
0#P
hosp
horic
acid
tri-n-
buty
lest
er;
C 12H
27O
4P;
@126
-73-
8#W
ater
;H 2
O;
@773
2-18
-5#
A.
V.
Bal
uev,
A.
A.
Lum
pov,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
6,19
6–
206~
1984
!.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%:6
.5–
48.1
0w
3/m
ass%
:0.0
1–
14.2
8
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rytr
i-n-bu
tyl
phos
phat
e–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2O2C
l 3! 2
,an
dph
ase
diag
ram
ofth
e
2~C
2O2C
l 3! 2
–C
12H
27O
4P–
H 2O
syst
emat
25°C
C12
H27
O4P
~100
w2
/mas
s%!b
H2O
~100
ww
3/m
ass%
!U
O2~
C2O
2Cl 3
! 2~1
00w
1/m
ass%
!S
olid
phas
ea
48.0
90.
0151
.90
A
46.7
20.
7552
.53
A1B
45.7
60.
6653
.58
A1B
37.9
21.
1060
.98
B
33.6
61.
8164
.53
B
29.3
23.
6567
.03
B
30.4
02.
3567
.25
B
28.3
54.
1267
.53
B
26.2
35.
3368
.40
B1C
26.4
24.
2069
.38
B1C
24.3
65.
7469
.90
C
21.4
36.
8271
.75
C1D
17.2
58.
4074
.35
D
11.1
811
.20
77.6
2D
4.72
16.6
878
.60
D
6.51
14.2
879
.21
D
!U
O2~
C2O
2Cl 3
! 2,
@217
40-4
1-0#;
~B!
UO
2~C
2O2C
l 3! 2•H
2O,
@#;
~C!
UO
2~C
2O2C
l 3! 2•2H
2O,
@#;
~D!
UO
2~C
2O2C
l 3! 2•3H
2O,
#.al
cula
ted
byco
mpi
ler
bydi
ffere
nce.
Add
ition
alin
form
atio
n:In
am
ore
rece
ntre
fere
nce,1th
eso
lubi
lity
at25
°Cin
dry
tri-n-
buty
lpho
spha
teof
UO 2~
C2O
2Cl 3
! 2w
asre
port
edasm
15
1.81
mol
kg2
1 .
Pha
sedi
agra
m~F
ig.
10!
ofth
eU
O 2~C
2O2C
l 3) 2
–C
12H
27O
4P–
H 2O
syst
emat
25°C
.
598598 JIRI HALA
FIG
.9.
Ura
nium
~VI!
diox
obi
s~tr
ichl
oroa
ceta
te!–
diet
hyle
ther
–w
ater
syst
em.
Lege
ndto
the
phas
edi
agra
m~f
orno
tatio
nof
solid
phas
esse
eab
ove!:
~I!
two
liqui
dph
ases
;~II!
unsa
tura
ted
hom
ogen
eous
wat
er–
diet
hyl
ethe
rso
lutio
ns;
regi
on~I
II!–
~XI!
repr
esen
tfie
lds
ofsa
tura
ted
solu
tions
ineq
uilib
rium
with
the
follo
win
gso
lidph
ases
:~I
II!
C;~
IV!
C1
D;
~V!
D;
~VI!
D1
E;~
VII
!E
;~V
III!
B1
C;~
IX!
B;
~X!
A1
B;
~XI!
A.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
phas
esw
ere
brou
ght
toeq
uilib
rium
bysh
akin
gth
emin
seal
edgl
ass
ampo
ules
.T
heco
ncen
trat
ion
ofur
aniu
man
dw
ater
inth
eeq
uilib
rium
phas
esw
asde
term
ined
grav
imet
rical
ly~met
hod
not
spec
ified!
and
by
Anh
ydro
usU
O 2~C
2O2C
l 3! 2
and
itshy
drat
ew
ere
prep
ared
and
anal
yzed
acco
rdin
gto
Ref
.1.
Die
thyl
ethe
rw
aspu
rified
acco
rdin
gto
Ref
.2,
drie
dov
erso
dium
met
al,
and
dist
illed
ona
rect
ifica
tion
colu
mn.
Co
~1!
@2 ~2!
~3!
Va
T/
10 10 Co
UO
a ~A @ b C
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
reac
hed.
The
phas
esw
ere
sepa
rate
dby
cent
rifug
atio
nan
dan
alyz
edas
inR
ef.
2.C
ompo
sitio
nof
the
phas
esre
port
edar
eav
erag
ere
sults
oftw
oto
thre
em
easu
rem
ents
.E
quili
briu
mso
lidph
ases
wer
eid
entifi
edby
Sch
rein
emak
ers
met
hod.
All
wor
kw
asco
nduc
ted
inat
mos
pher
eof
dry
argo
nsi
nce
UO
2~C
2O2C
l 3! 2
tend
sto
hydr
olyz
ean
dis
stro
ngly
hygr
osco
pic.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1 A.V
.Bal
uev,
A.Y
u.S
ilin,
I.G
.Sug
lubo
va,a
ndA
.P.T
aran
ov,
Rad
iokh
imiy
a30,
442
~198
8!.
2 A.
V.
Bal
uev,
S.
V.
Zhd
anov
skii,
and
I.G
.S
uglu
bova
,R
adio
khim
iya2
0,68
~197
8!.
3 V.
M.
Vdo
venk
o,A
.V
.B
alue
v,an
dI.
G.
Sug
lubo
ya,
inC
om
ple
xF
orm
atio
na
nd
Ext
ract
ion
of
La
nth
an
ide
sa
nd
Act
inid
es~
inR
ussi
an!
~Nau
ka,
Leni
ngra
d,19
74!,p.
35.
4 H.
Irvi
ngan
dD
.N
.E
dgin
gton
,J.
Inor
g.N
ucl.
Che
m.
10,
306
~195
9!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~tr
ichl
oroa
ceta
te!;U
O2~
C2O
2Cl 3
! 2;
1740
-41-
0#4-
met
hyl-2
-pen
tano
ne~m
ethy
liso
buty
lket
one!;
C6H
12O
;08
-10-
1#W
ater
;H 2
O;
@773
2-18
-5#
A.V
.Bal
uev,
M.A
.Mya
gkov
a-R
oman
ova,
and
I.G
.Sug
lubo
va,
Rad
iokh
imiy
a34,
59–
68~1
992!
.
riabl
es:
Pre
pare
dby
:
K:2
980
w2
/mas
s%:0
.09
–85
.90
w3
/mas
s%:0
.02
–20
.70
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
ry4-
met
hyl-2
-pen
tano
ne–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
2O2C
l 3! 2
,an
dph
ase
diag
ram
ofth
e
2~C
2O2C
l 3! 2
–C
6H12
O–
H2O
syst
emat
25°C
C6H
12O
~100
w2
/mas
s%!b
H2O
~100
w3
/mas
s%!
UO
2~C
2O2C
l 3! 2
~100
w1
/mas
s%!
Sol
idph
asea
85.8
80.
0214
.10
A
66.0
22.
1031
.88
A
56.2
23.
8539
.93
A
33.6
58.
3458
.01
A1B
32.4
68.
5059
.04
A1B
29.7
48.
9061
.36
B
19.7
210
.29
69.9
9B
7.79
13.5
578
.66
B
3.78
17.4
078
.82
B
0.09
20.7
079
.21
B
!U
O2~
C2O
2Cl 3
! 2•C
6H12
O,
@#;
~B!
UO
2~C
2O2C
l 3! 2•3H
2O,
@#
alcu
late
dby
com
pile
rby
diffe
renc
e.
ase
diag
ram~
Fig
.11
!of
the
UO 2
~C2O
2Cl 3
! 2–
C6H
12O
–H
2Osy
stem
at25
°C.
599599IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.10
.U
rani
um~V
I!di
oxo
bis~
tric
hlor
oace
tate!
–tr
i-n-b
utyl
phos
phat
e–
wat
ersy
stem
.Le
gend
toth
eph
ase
diag
ram
:~A
!tw
o-ph
ase
regi
on;~
B!
unsa
tura
ted
aque
ous-
orga
nic
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2O2C
l 3! 2
;~D
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2
~C2O
2Cl 3
! 2an
dU
O 2~C
2O2C
l 3! 2•H
2O;~
E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2O2C
l 3! 2•H
2O;~
F!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2
~C2O
2Cl 3
! 2•H
2Oan
dU
O 2~C
2O2C
l 3! 2•2H
2O;
~G!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O2~
C2O
2Cl 3
! 2•2H
2Oan
dU
O 2~C
2O2C
l 3! 2•3H
2O;
~H!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2O2C
l 3! 2•2H
2O;
~I!
satu
rate
dso
lu-
tions
ineq
uilib
rium
with
UO 2
~C2O
2Cl 3
! 2•3H
2O.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Cal
cula
ted
amou
nts
ofth
esa
lt,tr
i-n-
buty
lpho
spha
tean
dw
ater
wer
eeq
uilib
rate
din
seal
edgl
ass
ampo
ules
prot
ecte
dfr
omlig
htin
ath
erm
osta
ted
bath
for
4da
ysw
hich
was
foun
dsu
ffici
ent
for
equi
libriu
mto
be
UO
2~C
2O2C
l 3! 2
and
itshy
drat
esw
ere
prep
ared
acco
rdin
gto
Ref
.3.
Tri-
n-bu
tylp
hosp
hate
was
purifi
edac
cord
ing
toR
ef.
4,an
dth
endi
still
edat
15m
mH
gpr
essu
re.
Fra
ctio
nbo
iling
at17
2–
175
°Cw
asco
llect
edfo
rus
e.
Co
~1!
@2 ~2!
@1 ~3!
Va
T/
10 10 Co
UO
a ~A b C Ph
J
byS
chre
inem
aker
sm
etho
d.V
.M
.V
dove
nko
et
al.,
Rad
iokh
imiy
a17,
58~1
975!
.2 A
.V.B
alue
and
I.G
.Sug
lubo
va,i
nTh
eC
he
mis
try
ofU
ran
ium
~inR
ussi
an!,
edite
dby
B.
N.
Lask
orin~
Nau
ka,
Mos
cow
,19
89!,
p.18
8.3 V
.M
.V
dove
nko,
A.
V.
Bal
uev,
and
I.G
.S
uglu
bova
,in
Co
mp
lex
Fo
rma
tion
an
dE
xtra
ctio
no
fL
an
tha
nid
es
an
dA
ctin
ide
s~in
Rus
sian
!~N
auka
,Le
ning
rad,
1974!,
p.35
.
5.10
.U
rani
um„V
I…D
ioxo
Bis
„be
nzen
esul
fona
te…¿
Pho
spho
ricA
cid
Tri-
n-B
utyl
Est
er¿
Wat
erS
yste
m
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~be
nzen
esul
fona
te!;
2~C
6H5O
3S! 2
;@9
4667
-45-
5#P
hosp
horic
acid
tri-n-
buty
lest
er;
C 12H
27O
4P;
@126
-73-
8#W
ater
;H 2
O;
@773
2-18
-5#
A.V
.Bal
uev,
I.G
.Sug
lubo
va,a
ndA
.P.T
aran
ov,R
adio
khim
iya
30,
349
–54
~198
8!.
riabl
es:
Pre
pare
dby
:
K:
298
0w
2/m
ass%
:0–
52.6
40
w3
/mas
s%:0
–26
.06
J.H
ala
Exp
erim
enta
lDat
a
mpo
sitio
nof
bina
rytr
i-n-bu
tyl
phos
phat
e–
wat
erso
lutio
nssa
tura
ted
with
UO
2~C
6H5O
3S! 2
,an
dph
ase
diag
ram
ofth
e
2~C
6H5O
3S! 2
–C
12H
27O
4P–
H 2O
syst
emat
25°C
C12
H27
O4P
~100
w2
/mas
s%!b
H2O
~100
w3
/mas
s%!
UO
2~C
6H5O
3S! 2
~100
w1
/mas
s%!
Sol
idph
asea
52.6
40
47.3
6cA
49.9
40.
8849
.18
A
45.9
82.
0152
.11
A1B
43.8
73.
0953
.04
B
34.4
56.
0259
.40
B
28.0
39.
4862
.49
B
14.7
119
.10
66.1
9B
2.97
25.7
671
.27
B
026
.06
73.9
3dB
!U
O2~
C6H
5O3S
! 2,
@946
67-4
5-5#;
~B!
UO
2~C
6H5O
3S! 2•H
2O,
@#.
alcu
late
dby
com
pile
rby
diffe
renc
e.ol
ubili
tyat
25°C
ofU
O 2~C
6H5O
3S! 2
indr
ytr
i-n-b
utyl
phos
phat
e;m15
1.54
mol
kg2
1~c
ompi
ler!.
olub
ility
at25
°Cof
UO 2
~C6H
5O3S
! 2in
wat
er;m
15
4.85
mol
kg2
1~c
ompi
ler!.
ase
diag
ram~
Fig
.12
!of
the
UO 2
~C6H
5O3S
! 2–
C12
H27
O4P
–H 2
Osy
stem
at25
°C.
ditio
nali
nfor
mat
ion:
eph
ase
diag
ram
ofth
eU
O2~
C6H
5O3S
! 2–
H2O
–C 1
2H27
O4P
syst
emat
25°C
was
stud
ied
byth
e1 H
the
nucl
ear
mag
netic
reso
nanc
eM
R!
met
hod1
with
fairl
ygo
odag
reem
entw
ithth
eda
tare
port
edin
the
com
pile
ddo
cum
ent,
exce
ptfo
rso
me
diffe
renc
esin
the
boun
dary
betw
een
regi
ons
Aan
dB
.
600600 JIRI HALA
FIG
.11
.U
rani
um~V
I!di
oxo
bis~
benz
enes
ulfo
nate!–
tri-n
-but
ylph
osph
ate
–w
ater
syst
em.
Lege
ndto
the
phas
edi
agra
m:
~A!
two-
phas
ere
gion
;~B
!un
satu
rate
daq
ueou
s–
orga
nic
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
2O2C
l 3! 2•C
6H12
O;
~D!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
2O2C
l 3! 2•C
6H12
Oan
dU
O 2~C
2O2C
l 3! 2•3H
2O;
~E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O2~
C2O
2Cl 3
! 2•3H
2O
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Cal
cula
ted
amou
nts
ofth
esa
lt,m
ethy
liso
buty
lket
one,
and
wat
erw
ere
equi
libra
ted
inse
aled
glas
sam
poul
espr
otec
ted
from
light
ina
ther
mos
tate
dba
th.
Equ
ilibr
atio
ntim
ew
asno
tre
port
ed.
The
phas
esw
ere
sepa
rate
dby
cent
rifug
atio
nan
dan
alyz
edfo
rth
eco
nten
tof
the
salt
and
wat
erac
cord
ing
toR
efs.
1an
d2.
Com
posi
tions
ofth
eph
ases
repo
rted
are
aver
age
resu
ltsof
two
toth
ree
mea
sure
men
ts.
By
anal
ogy
toot
her
auth
ors’
wor
k,th
eco
mpi
ler
assu
mes
that
equi
libriu
mso
lidph
ases
wer
eid
entifi
ed
UO
2~C
2O2C
l 3! 2
and
itshy
drat
esw
ere
prep
ared
acco
rdin
gto
Ref
.3.
Met
hyl
isob
utyl
keto
new
asa
reag
ent
grad
epr
oduc
t~s
ourc
eno
tsp
ecifi
ed!
and
was
used
with
out
furt
her
purifi
catio
n.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
Ref
eren
ces:
1
Co
~1!
UO
~2!
~3!
Va
T/
10 10 Co
UO
a ~A b C c S d S Ph
Ad
Th
~N
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Sch
rein
emak
ers’
met
hod.
Tem
pera
ture
:pr
ecis
ion6
0.05
K~a
utho
rs!.
Sol
ubili
ty:
prec
isio
nno
tre
port
ed.
Ref
eren
ces:
1 E.O
.Ash
evsk
aya,
L.L.
Sch
erba
kova
,and
V.A
.Sch
erba
kov,
J.R
adio
anal
.N
ucl.
Che
m.,
Art
icle
s143,
307
~199
0!.
2 A.V
.Bal
uev,
S.G
.Kry
lov,
I.G
.Sug
lubo
va,a
ndA
.P.T
aran
ov,
Ves
t.Le
ning
rad.
Gos
ud.
Uni
v.,
Phy
s.C
hem
.22
,36
~198
4!.
3 H.
Irvi
ng,
and
D.
N.
Edg
ingt
on,
J.In
org.
Nuc
l.C
hem
.10
,30
6~1
959!
.
5.11
.U
rani
um„IV…
Oxa
late
5.11
.1.
Eva
luat
ion
ofth
eU
„C
2O4…
2¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4) 2
;@2
847-
15-6#
Wat
er;
H 2O
;@77
32-1
8-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
The
only
exte
nsiv
est
udy
onth
issy
stem
has
been
carr
ied
out
byG
rinbe
rgan
dP
etrz
hak
1w
hom
easu
red
the
solu
bilit
yof
C2O
4!2•
6H2O
inw
ater
at29
8K
asa
func
tion
ofsp
ecifi
cac
tivity
ofth
esa
ltan
deq
uilib
ratio
ntim
eby
two
diffe
rent
equi
libra
tion
hniq
ues,
and
used
thre
edi
ffere
ntm
etho
dsfo
rth
ede
term
inat
ion
ofur
aniu
min
the
satu
rate
dso
lutio
ns.
The
yob
serv
edra
ther
larg
eat
ter
ofre
sults
,an
das
crib
edit
tolo
wdi
ssol
utio
nra
teof
the
salt
and
cons
eque
ntly
tosl
owat
tain
men
tof
equi
libriu
m.
Mor
eove
r,th
esu
ltsob
tain
edw
hen
uran
ium
was
dete
rmin
edby
copr
ecip
itatio
nw
ithLa
F3
~whi
chen
able
dth
emto
elim
inat
eth
ein
fluen
ceof
UO
221
oduc
edby
oxid
atio
nof
U~IV
!!w
ere
cons
iste
ntly
muc
hlo
wer
than
thos
eba
sed
onto
talu
rani
umco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
.is
indi
cate
dth
atth
eso
lubi
lity
ofU~C
2O4!
2w
asra
ther
sens
itive
toox
idat
ion
ofU~IV
!by
trac
esof
oxyg
enin
solu
tions
whi
chco
uld
not
elim
inat
edev
enth
ough
the
mea
sure
men
tsw
ere
perf
orm
edin
anin
ert
atm
osph
ere.
The
diss
olut
ion
proc
ess
was
furt
her
com
plic
ated
byfa
ctth
atdu
ring
oxid
atio
nof
U~C2O
4!2
toU
O2C
2O4,
oxal
icac
idw
asre
leas
ed,
and
caus
edth
eso
lubi
lity
ofU
~C2O
4!2
furt
her
tore
ase.
Bec
ause
ofth
ese
proc
esse
s,th
eau
thor
sco
nsid
ered
the
U~C
2O4) 2
–H
2Osy
stem
tobe
ano
nequ
ilibr
ium
one.
As
the
mos
tre
liabl
elu
bilit
yva
lue
they
prop
osed
that
obta
ined
byth
eLa
F3
met
hod,
i.e.,
20–
25m
gU~C
2O4!
2•6H
2Ope
rdm
3 .T
akin
gth
eav
erag
eof
the
two
lues
,th
eev
alua
tor
obta
ined
the
solu
bilit
yof
U~C
2O4!
2in
wat
erat
298
Kas
4.33
102
5m
olkg
21 ,
whi
chis
sugg
este
dto
beus
edas
ata
tive
valu
e.It
isal
mos
tide
ntic
alw
ithth
atof
Zak
haro
vaan
dM
oskv
in2
who
,in
thei
rst
udy
ofth
ete
rnar
yU~C
2O4) 2
–H
Cl–
H2O
syst
em,
tain
edth
eso
lubi
lity
tobe
4.273
102
5m
olkg
21 .
The
seau
thor
s,ho
wev
er,
did
not
spec
ifyth
ete
mpe
ratu
reof
the
mea
sure
men
t,or
mm
ent
onth
eef
fect
ofth
eox
idat
ion
ofU~IV
!in
this
syst
em.
Orig
inal
ly,
Grin
berg
and
Pet
rzha
kre
port
edth
eso
lubi
lity
ofU
~C2O
4!2
inte
rto
be9.
7310
25
mol
kg2
1 .3In
thei
rm
ore
rece
ntst
udy1th
eyre
ject
edth
isva
lue
aser
rone
ousl
yhi
ghdu
eto
the
inte
rfer
ence
from
idat
ion
ofU~
IV!.
fere
nces
:
.A
.G
rinbe
rgan
dG
.I.
Pet
rzha
k,R
adio
khim
iya5,
319
~196
3!.
.A
.Z
akha
rova
and
A.
I.M
oskv
in,
Zh.
Neo
rg.
Khi
m.5,12
28~1
960!
.
.A
.G
rinbe
rgan
dG
.I.
Pet
rzha
k,Z
h.N
eorg
.K
him
.3,
204
~195
8!.
601601IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.12
.U
rani
um~V
I!di
oxoo
xala
te–
sodi
umox
alat
e–
wat
ersy
stem
.Le
gend
toth
eph
ase
diag
ram
:~A
!tw
o-ph
ase
regi
on;~B
!un
satu
rate
daq
ueou
s–
orga
nic
solu
tions
;~C
!sa
tura
ted
solu
tions
ineq
uilib
rium
with
UO 2~C
6H5O
3S! 2
and
UO 2
~C6H
5O3S
! 2•H
2O;
~D!
satu
rate
dso
lu-
tions
ineq
uilib
rium
with
UO 2
~C6H
5O3S
! 2;
~E!
satu
rate
dso
lutio
nsin
equi
libriu
mw
ithU
O 2~C
6H5O
3S! 2•H
2O.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Cal
cula
ted
amou
nts
ofth
esa
lt,tr
i-n-
buty
lpho
spha
tean
dw
ater
wer
eeq
uilib
rate
din
seal
edgl
ass
ampo
ules
prot
ecte
dfr
omlig
htin
ath
erm
osta
ted
bath
for
4da
ysw
hich
was
foun
dsu
ffici
ent
for
equi
libriu
mto
bere
ache
d.T
heph
ases
wer
eal
low
edto
sepa
rate
onst
andi
ngor
byce
ntrif
ugat
ion,
and
anal
yzed
for
the
cont
ent
ofur
aniu
man
dw
ater
bygr
avim
etric
~uns
peci
fied!
and
Fis
cher
met
hods
,re
spec
tivel
y.B
yan
alog
yto
othe
rau
thor
s’w
ork
the
com
pile
ras
sum
esth
atth
eeq
uilib
rium
solid
phas
esw
ere
iden
tified
by
UO
2~C
6H5O
3S! 2•H
2Ow
aspr
epar
edby
diss
olvi
ngam
orph
ous
UO
3in
aque
ous
solu
tions
ofbe
nzen
esul
foni
cac
id,
and
crys
talli
zing
the
salt.
Anh
ydro
ussa
ltw
asob
tain
edby
vacu
umde
hydr
atio
nof
the
hydr
ate
acco
rdin
gto
Ref
.2.
Tri-
n-bu
tylp
hosp
hate
was
purifi
edac
cord
ing
toR
ef.
3,an
dth
endi
still
edat
15m
mH
gpr
essu
re.
Fra
ctio
nbo
iling
at17
2–
175
°Cw
asco
llect
edfo
rus
e.
Est
imat
edE
rror
:
Co
~1!
~2!
U~
tec
sc re pr Th
be the
inc
so va ten
ob co wa
ox Re
1 A 2 F 3 A
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4) 2
;@2
847-
15-6#
Wat
er;
H 2O
;@77
32-1
8-5#
A.
A.
Grin
berg
and
G.
I.P
etrz
hak,
Rad
iokh
imiy
a,5,31
9–
29~1
963!
.
riabl
es:
Pre
pare
dby
:
K:
298
ecifi
cac
tivity
ofU~
C2O
4!2
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU~
C2O
4!2
inw
ater
Isot
herm
alm
etho
d-m
odifi
catio
nA~s
eeM
etho
dse
ctio
n!
C2O
4!2•
6H2O
~g!a
U~C
2O4!
2•6H
2O~c
ount
sm
in21
mg2
1 !bE
quili
brat
ion
time
~h!
U~C
2O4!
2•6H
2O~m
gdm
23 !c
U~C
2O4!
2•6H
2O~m
gdm
23 !d
0.25
8.75
310
39
4421
0.30
5.92
310
39.
546
15
13.5
—24
1.00
5.92
310
30.
545
17
23.5
5622
7.20
310
39.
540
18
23.5
9825
5.5e
7118
9.5e
100
28
0.10
7.20
310
64.
025
14
7.0
4016
0.20
4.64
310
66
248
1644
13
2375
14
3068
15
3783
19
5097
18
8610
019
0.20
4.64
310
67
239
1130
9
1845
10
2254
15
2670
17
1.07
4.64
310
65.
554
7
11.5
7710
2410
113
5214
020
8718
931
122
238
32
170
274
32
a Am
ount
ofU~
C2O
4!2•
6H2O
used
inth
eex
perim
ent.
b Spe
cific
activ
ityof
U~C
2O4!
2•6H
2O.
c Obt
aine
dby
dire
ctaco
untin
g.d O
btai
ned
byco
prec
ipita
tion
with
LaF
3.e In
the
pres
ence
ofai
r.
Add
ition
alin
form
atio
n:A
nav
erag
eso
lubi
lity
valu
eof;
20m
gU~
C2O
4!2•
6H2O
/dm
3~;
3.83
102
5m
oldm
23;
com
pile
r!w
asgi
ven
byth
eau
thor
sba
sed
onth
eLa
F 3m
etho
dof
uran
ium
dete
rmin
atio
n.
602602 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!W
ater
;H 2
O;@
7732
-18-
5#A
.A
.G
rinbe
rg,
G.
I.P
etrz
hak,
and
L.I.
Evt
eev,
Zh.
Neo
rg.
Khi
m.
3,20
4–
11~1
958!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
aT
heso
lubi
lity
inw
ater
ofU~
C2O
4!2•
6H2O
was
repo
rted
tobe
0.05
1g
salt/
kgH
2Oor
9.73
102
5m
olkg
21
at25
°C
Add
ition
alin
form
atio
n:T
hepH
ofth
esa
tura
ted
solu
tions
was
4.3
onav
erag
e,an
dth
em
olar
elec
tric
alco
nduc
tivity
varie
dbe
twee
n45
1an
d49
5V
21
cm2
2 .Fro
mth
isth
eau
thor
sco
nclu
ded
that
inth
esa
tura
ted
solu
tions
U~C
2O4!
2is
fully
diss
ocia
ted
acco
rdin
gto
the
equa
tion
U~C
2O4!
2~H
2O! n
12
H2O�
U~C
2O4!
~H2O
) n1
22
11
C2O
422
whi
leth
eU~
C2O
4!~H
2O! n
12
21
ion
diss
ocia
ted
byab
out
70%
acco
rdin
gto
the
reac
tion
U~C
2O4!
~H2O
! n1
22
1�
U~C
2O4!
~H2O
! n1
1~O
H!1
1H
1
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
inth
edo
cum
ent
com
pile
d.B
yan
alog
yto
am
ore
rece
ntau
thor
s’pa
per
1it
can
beas
sum
edth
atis
othe
rmal
met
hod
was
used
,th
atth
eso
lutio
nsw
ere
brou
ght
tosa
tura
tion
for
6–
8h
unde
rH 2
atm
osph
ere,
and
that
oxal
ate
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
titrim
etric
ally
with
KM
nO4
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:P
reci
sion
ofte
mpe
ratu
reor
solu
bilit
ym
easu
rem
entn
otre
port
ed.
Ref
eren
ces:
1 A.A
.Grin
berg
and
G.I
.Pet
rzha
k,R
adio
khim
iya5,31
9~1
963!
.
Co
~1!
~2!
Va
T/
Sp
U~
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
of
Sou
rce
and
Pur
ityof
Mat
eria
ls:
Est
imat
edE
rror
:
U~C
2O4!
2•6H
2Ola
bele
dw
ith23
3 Uw
aspr
epar
edby
redu
ctio
nof
UO
221
with
rong
alite
inac
idic
solu
tions
.H
ydro
gen
gas
was
free
dfr
omox
ygen
bypa
ssin
git
over
palla
dium
-tre
ated
asbe
stos
.
Tem
pera
ture
:pr
ecis
ion6
0.1
Kfo
rm
etho
dA
,60.
3K
for
met
hod
B~a
utho
rs!.
Ref
eren
ces:
1 A.
A.
Grin
berg
,E
.I.
Pet
rzha
k,an
dL.
I.E
vtee
v,Z
h.N
eorg
.K
him
.3,
204
~195
8!.
2 A.
A.
Grin
berg
,L.
E.
Nik
olsk
aya,
G.
I.P
etrz
hak,
V.
I.S
pits
yn,
and
F.
M.
Fili
nov,
Zh.
Ana
l.K
him
.12,
92~1
957!
.
5.11
.2.
Eva
luat
ion
ofth
eU
„C
2O4…
2¿H
Cl¿
H2O
Sys
tem
mpo
nent
s:E
valu
ator
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
The
solu
bilit
yof
U~C
2O4!
2in
aque
ous
HC
lsol
utio
nsw
asm
easu
red
asa
func
tion
ofH
Clc
once
ntra
tion
intw
odo
cum
ents
.1,
2In
the
rkof
Dor
ough
,1th
em
easu
rem
ents
wer
eca
rrie
dou
tat
298
K,
and
care
was
take
nto
prev
ent
uran
ium
~IV
!fr
omox
idat
ion
byox
ygen
solv
edin
the
solu
tions
mea
sure
d.N
osu
chpr
ecau
tions
wer
eta
ken
inth
ew
ork
ofZ
akha
rova
and
Mos
kvin
2w
here
,be
side
sth
is,
pera
ture
was
not
spec
ified
.In
spite
ofth
is,
both
sets
ofda
tafit
onon
ecu
rve
whe
npl
otte
dgr
aphi
cally
.O
win
gto
the
less
defin
ednd
ition
sin
Ref
.2,
how
ever
,th
eev
alua
tor
sugg
ests
the
data
ofD
orou
gh1
begi
ven
pref
eren
ce.
fere
nces
:
.D
.D
orou
gh,
U.
S.
At.
Ene
rgy
Com
m.
Rep
ort
TID
5290
,B
ook
2,19
58,
p.53
5.
.A
.Z
akha
rova
and
A.
I.M
oskv
in,
Zh.
Neo
rg.
Khi
m.5,12
28~1
960!
.
603603IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Isot
herm
alm
etho
d-m
odifi
catio
nB
U~C
2O4!
2•6H
2O~c
ount
sm
in21
mg2
1 !aE
quili
brat
ion
time
~h!
U~C
2O4!
2•6H
2O~m
gdm
23 !b
U~C
2O4!
2•6H
2O~m
gdm
23 !c
U~C
2O4!
2•6H
2O~m
gdm
23 !d
1.57
310
3e
686
94—
1.19
310
3e
3593
9725
1110
9—
—
2417
218
8—
3018
318
9—
100
182
179
32
2.89
310
3f
923
25—
2.55
310
3f
1474
71—
2069
65—
3472
7326
180
113
9222
200
109
100
24
200
111
103
27
4.64
310
3f
19—
9717
31—
100
16
157
—10
017
a Spe
cific
activ
ityof
U~C
2O4!
2•6H
2Ous
edin
the
expe
rimen
t.b O
btai
ned
byel
ectr
opla
ting.
c Obt
aine
dby
dire
ctaco
untin
g.d O
btai
ned
byco
prec
ipita
tion
onto
LaF
3.e M
easu
rem
ents
carr
ied
out
with
finel
ygr
ound
U~C
2O4!
2•6H
2O.
f Coa
rse
crys
talli
neU~C
2O4!
2•6H
2Opl
aced
inbo
iling
wat
eran
dco
oled
ina
stre
amof
nitr
ogen
gas.
Add
ition
alin
form
atio
n:A
nav
erag
eso
lubi
lity
valu
eof;
25m
gdm
23
U~C
2O4!
2•6H
2O~;
4.83
102
5m
oldm
23;
com
pile
r!w
asgi
ven
byth
eau
thor
sba
sed
onth
eLa
F 3m
etho
dof
uran
ium
dete
rmin
atio
n.T
heau
thor
sst
ate
that
the
grea
tsc
atte
rof
solu
bilit
yva
lues
obta
ined
byth
eth
ree
met
hods
was
due
toth
elo
wdi
ssol
utio
nra
teU
~C2O
4!2•
6H2O
,an
dco
nseq
uent
lyto
slow
atta
inm
ent
ofeq
uilib
rium
,an
d—as
indi
cate
dby
the
diffe
renc
ein
the
figur
esob
tain
edby
diffe
rent
anal
ytic
alm
etho
ds—
also
bypa
rtia
loxi
datio
nof
uran
ium
~IV
!.T
hela
tter
effe
ctw
asca
used
bytr
aces
ofO
2no
trem
oved
from
the
syst
em,
and
part
ially
byth
epr
oduc
tsof
radi
olys
isof
wat
er.
The
proc
ess
ofU
~C2O
4!2•
6H2O
diss
olut
ion
was
furt
her
com
plic
ated
byth
efa
ctth
atdu
ring
itsox
idat
ion
toU
O 2C2O
4,ox
alic
acid
was
rele
ased
whi
chin
crea
sed
the
solu
bilit
yof
U~C
2O4!
2an
dat
the
sam
etim
ehi
nder
edits
oxid
atio
n.B
ecau
seof
thes
epr
oces
ses,
the
auth
ors
char
acte
rized
the
U~C
2O4) 2
–H
2Osy
stem
asa
none
quili
briu
mon
e,an
dco
nclu
ded
the
solu
bilit
yof
U~C2O
4!2
inw
ater
give
nby
them
ina
prev
ious
pape
r1
tobe
erro
neou
s.
Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
wo
dis
tem
co Re
1 G 2 F
J
ofox
alic
acid
,Ka1
55.
9310
22
and
Ka2
56.
4310
25
~sou
rce
not
give
n!.
Add
ition
alin
form
atio
n:B
ased
onth
eva
lue
ofth
eco
nsta
ntK,
the
auth
orco
nclu
ded
that
near
lyco
mpl
ete
hydr
olys
isof
U~I
V!
toU
~OH
!31to
okpl
ace
inH
Cl
solu
tions
satu
rate
dw
ithU~C
2O4!
2.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.G
reat
care
was
take
nto
prev
ent
idat
ion
ofU~
IV!
oxal
ate
sinc
eU
O 2C2O
4is
rela
tivel
yqu
itelu
ble.
Prio
rto
solu
bilit
yde
term
inat
ion,
the
solu
tions
wer
eile
dto
rem
ove
diss
olve
dO 2an
dth
enke
ptun
der
N 2os
pher
e.A
sam
ple
ofU
O 221-f
ree
U~IV
!ox
alat
ew
assh
eda
num
ber
oftim
esw
ithth
eso
lutio
nin
whi
chth
elu
bilit
yw
asto
bem
easu
red
and
shak
enw
ithth
esa
me
lutio
nin
agl
ass-
stop
pere
dfla
skun
der
N2
atm
osph
ere
ina
rmos
tate
dba
th.
Afte
r24
hth
esa
tura
ted
solu
tion
was
thdr
awn
thro
ugh
asu
ctio
nfil
ter
appa
ratu
s,an
dan
alyz
edfo
ran
ium
cont
ent
bya
coun
ting.
Tw
om
etho
dsw
ere
used
toep
are
the
sam
ples
for
coun
ting.
Inth
eel
ectr
opla
ting
met
hod,
sam
ples
ofth
esa
tura
ted
solu
tions
wer
eco
nver
ted
to
2SO
4by
fum
ing
with
conc
entr
ated
H 2SO
4,di
lute
dw
ithte
r,an
del
ectr
odep
osite
don
apl
atin
umca
thod
eas
UF
4fr
omdi
umflu
orid
eso
lutio
n.T
heca
thod
ew
asth
enig
nite
dan
da
unte
d.In
the
filte
rpa
per
met
hod,
the
sam
ples
ofth
etu
rate
dso
lutio
nsw
ere
conv
erte
dto
UO
2SO
4,an
aliq
uot
was
ced
ona
filte
rpa
per,
whi
chw
asth
enm
ount
edon
aco
pper
k,dr
ied,
and
coun
ted.
No
diffe
renc
esw
ere
note
insa
mpl
esep
ared
byap
proa
chin
geq
uilib
rium
from
abov
ean
dbe
low
equi
libriu
mte
mpe
ratu
re.
All
mea
sure
men
tsw
ere
mad
eon
C2O
4!2
sam
ples
3da
ysol
d,si
nce
fres
hly
prec
ipita
ted
C2O
4!2
was
repo
rted
toha
vea
cons
ider
ably
high
erlu
bilit
y.2
U~C
2O4!
2•6H
2Ow
aspr
epar
edfr
omU
O 3.T
hela
tter
was
diss
olve
din
HC
l~1:1
!,an
dth
ere
sulti
ngso
lutio
nof
UO 2C
l 2w
asre
duce
del
ectr
olyt
ical
lyto
U~IV
!,w
hich
was
prec
ipita
ted
with
oxal
icac
id.
The
prec
ipita
tew
asfil
tere
d,w
ashe
dw
ithbo
iled
3m
oldm
23
HC
l,an
dsh
aken
with
oxyg
en-f
ree
3m
oldm2
3H
Cl
vigo
rous
lyfo
r3
hin
N2
atm
osph
ere.
The
last
oper
atio
nw
asre
peat
edth
ree
times
.S
ourc
ean
dpu
rity
ofch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:U
rani
umco
ncen
trat
ion:
stan
dard
devi
atio
nof
the
mea
n5
1.1%
–6
%~a
utho
r!.
Ref
eren
ces:
1 G.
N.
Lew
isan
dM
.R
anda
ll,Th
erm
od
yna
mic
s~McG
raw
–H
ill,
New
Yor
k,19
23!,
p.33
6.2 E
.L.
Wag
ner,
The
Sol
ubili
tyan
dS
olub
ility
Pro
duct
ofU
~IV
!O
xala
te,
Rep
ort
RL-
4.6.
321.
604604 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
G.
D.
Dor
ough
,U
.S
.A
tE
nerg
yC
omm
.,T
ID52
90,
Boo
k2,
1958
,pp
.53
5–
42.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
118
–6.
18J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU~
C2O
4!2•
6H2O
inH
Cls
olut
ions
a
HC
l(c
2/
mol
dm2
3 )U
~mg
dm2
3 !
U~C
2O4!
2f
(104
c 1/
mol
dm2
3 )
Kg
(1022
mol
4dm
212
)
HC
l(c
2/
mol
dm2
3 )U
~mg
dm2
3 !
U~C
2O4!
2f
(104
c 1/
mol
dm2
3 )
Kg
(1022
mol
4dm
212
)
0.11
85.
15c
3.62
142c
5.51
c14
2c
5.33
b0.
224
2.87
142b
5.97
0.57
5
1.04
928
.9c6.
0153
6c
28.3
c46
2c
28.6
b1.
201.
2352
3d
1.18
37.3c
465d
38.3
b51
8e
37.8
b1.
591.
6545
8e
3.09
99.3c
494b
20.8
0.68
107c
6.18
515d
112d
461d
101d
488b
20.5
0.50
8
105b
4.41
0.56
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b A
vera
geva
lue~
auth
or!.
c Det
erm
ined
bypl
atin
g.d D
eter
min
edby
the
filte
rpa
per
met
hod.
e Det
erm
ined
byan
unsp
ecifi
edvo
lum
etric
met
hod.
f Cal
cula
ted
byco
mpi
ler.
g Equ
ilibr
ium
cons
tant
for
the
reac
tion
U~C2O
4!2~
H2O
! ~s!�
U~O
H!31
12C
2O422
1H
1,
calc
ulat
edby
the
auth
orasK
5@U
~OH
!31#
3@C
2O422
#2@H
1#
byus
ing
mea
nio
nic
activ
ityco
effic
ient
sof
HC
las
inte
rpol
ated
from
the
data
inR
ef.
1,an
dth
edi
ssoc
iatio
nco
nsta
ntsMe
Iso
ox so bo atm
wa
so so the
wi
ur pr the
UO
wa
so co sa pla
dis
pr the
U~
U~
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsco
ntai
ning
exce
ssso
lidw
ere
equi
libra
ted
for
4–
6h
whi
chw
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.U
rani
umin
the
satu
rate
dso
lutio
nsw
asde
term
ined
bya
coun
ting.
U~C
2O4!
2•6H
2Ow
aspr
epar
edfr
om23
3 U-la
bele
dU
O 2~N
O3!
2
solu
tion
byre
duct
ion
with
rong
alite
.U~IV
!ox
alat
ew
asdi
ssol
ved
in~N
H4!
2C2O
4so
lutio
n,th
eso
lutio
nw
asce
ntrif
uged
,an
dth
eox
alat
oco
mpl
exde
com
pose
dw
ithH
Cl.
U~C
2O4!
2•6H
2Opr
ecip
itate
dw
asce
ntrif
uged
,w
ashe
dto
rem
ove
exce
ssox
alic
acid
,an
dai
rdr
ied.
Sou
rce
and
purit
yof
chem
ical
sno
tre
port
ed.
Est
imat
edE
rror
:a
coun
ting:
prec
isio
n65%
~aut
hors!
.
Ref
eren
ces:
1 L.E
.D
rabk
ina,
A.
I.M
oskv
in,
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,1
934~
1958
!.2 K
.A.K
raus
and
F.N
elso
n,J.
Am
.Che
m.
Soc
.72,
3901
~195
0!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#S
ulfu
ricac
id;
H 2S
O4;
@766
4-93
-9#W
ater
;H 2
O;
@773
2-18
-5#
G.
D.
Dor
ough
,U
.S
.A
tE
nerg
yC
omm
.,T
ID52
90,
Boo
k2,
1958
,pp
.53
5–
542.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
515
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU~
C2O
4!2•
6H2O
in0.
515
mol
dm2
3H
2SO
4so
lutio
na
H2S
O4
(c2
/mol
dm2
3 )U
~mg
dm2
3 !U
~C2O
4!2c
(104
c 1/m
oldm
23 )
0.51
516
0
174
167b
7.02
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
vera
geva
lue~
auth
or!.
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.G
reat
care
was
take
nto
prev
ent
idat
ion
ofU~
IV!
oxal
ate
sinc
eU
O 2C2O
4is
rela
tivel
yqu
itelu
ble.
Prio
rto
solu
bilit
yde
term
inat
ion,
the
solu
tions
wer
eile
dto
rem
ove
diss
olve
dO 2an
dth
enke
ptun
der
N 2os
pher
e.A
sam
ple
ofU
O 221-f
ree
U~IV
!ox
alat
ew
assh
eda
num
ber
oftim
esw
ithth
eso
lutio
nin
whi
chth
elu
bilit
yw
asto
bem
easu
red
and
shak
enw
ithth
esa
me
lutio
nin
agl
ass-
stop
pere
dfla
skun
der
N2
atm
osph
ere
ina
rmos
tate
dba
th.
Afte
r24
hth
esa
tura
ted
solu
tion
was
thdr
awn
thro
ugh
asu
ctio
nfil
ter
appa
ratu
s,an
dan
alyz
edfo
ran
ium
cont
ent
bya
coun
ting.
Sam
ples
ofth
esa
tura
ted
lutio
nsw
ere
conv
erte
dto
UO 2S
O4
byfu
min
gw
ithnc
entr
ated
H 2SO
4,di
lute
dw
ithw
ater
,an
del
ectr
odep
osite
da
plat
inum
cath
ode
asU
F4
from
sodi
umflu
orid
eso
lutio
n.T
heca
thod
ew
asth
enig
nite
dan
da
coun
ted.
All
mea
sure
men
tsw
ere
mad
eon
U~C
2O4!
2sa
mpl
es3
days
old,
sinc
efr
eshl
ypr
ecip
itate
dU~C
2O4!
2ha
sa
cons
ider
ably
high
erso
lubi
lity.
1
U~C
2O4!
2•6H
2Ow
aspr
epar
edfr
omU
O 3.T
hela
tter
was
diss
olve
din
HC
l~1:1
!,an
dth
ere
sulti
ngso
lutio
nof
UO 2C
l 2w
asre
duce
del
ectr
olyt
ical
lyto
U~IV
!,w
hich
was
prec
ipita
ted
with
oxal
icac
id.
The
prec
ipita
tew
asfil
tere
d,w
ashe
dw
ithbo
iled
3m
oldm
23
HC
l,an
dsh
aken
with
oxyg
en-f
ree
3m
oldm2
3H
Cl
vigo
rous
lyfo
r3
hin
N2
atm
osph
ere.
The
last
oper
atio
nw
asre
peat
edth
ree
times
.S
ourc
ean
dpu
rity
ofch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Ura
nium
conc
entr
atio
n:st
anda
rdde
viat
ion
ofth
em
ean
54
%~a
utho
r!.
Ref
eren
ces:
1 E.
L.W
agne
r,T
heS
olub
ility
and
Sol
ubili
tyP
rodu
ctof
U~I
V!
Oxa
late
,R
epor
tR
L-4.
6.32
1.
605605IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
F.
A.
Zak
haro
vaan
dA
.I.
Mos
kvin
,Z
h.N
eorg
.K
him
.5,
1228
–33
;R
uss.
J.In
org.
Che
m.5,
592
–5
~196
0!.
Var
iabl
es:
Pre
pare
dby
:
c 2/m
oldm
23 :
0–
3.0
J.H
a´ la
Exp
erim
enta
lDat
a
Sol
ubili
tyat
°Cof
U~C
2O4!
2•6H
2Oin
HC
lsol
utio
nsa
HC
l(c
2/m
oldm
23 )
U~C
2O4!
2•6H
2O(1
02g
dm2
3 )bU
~C2O
4!2•
6H2O
(104
c 1/m
oldm
23 )c
Ksp
d
(1022
mol
3dm
29 )
Ksp
e
(1025
mol
3dm
29 )
02.
230.
427
——
0.1
1.26
0.24
1—
—
0.3
1.71
0.32
86.
62.
1
0.5
2.19
0.41
92.
80.
5
1.0
5.00
0.95
83.
20.
8
2.0
14.0
02.
86—
—
3.0
23.5
64.
51—
—
4.36
1.6f
1.16
0.7f
a Mea
sure
men
tsw
ere
cond
ucte
dat
unsp
ecifi
edte
mpe
ratu
re.
Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b A
vera
geva
lue
ofth
ree
mea
sure
men
ts.
c Cal
cula
ted
byco
mpi
ler.
d Cal
cula
ted
byau
thor
sasK
sp5
@U41
#@C
2O422
#2by
usin
gth
eU41
and
C 2O
422co
ncen
trat
ions
obta
ined
from
equi
libriu
mco
nsta
nts
for
the
reac
tions
U~C
2O4!
212H
1�
U~C
2O4!
211
C2H
2O4,
and
U~C
2O4!
214H
1�
U41
12C
2H2O
4de
term
ined
from
the
solu
bilit
yda
ta,
and
the
diss
ocia
tion
cons
tant
sof
oxal
icac
idta
ken
from
Ref
.1.
Hyd
roly
sis
ofU
41an
dth
efo
rmat
ion
ofth
eU
Cl
31co
mpl
exw
ere
cons
ider
edus
ing
the
appr
opria
teda
tafr
omR
ef.
2.e S
ourc
eof
activ
ityco
effic
ient
sno
tre
port
ed.
f Ave
rage
valu
e~au
thor
s!.
Add
ition
alin
form
atio
n:In
anot
her
appr
oach
,th
eeq
uilib
rium
cons
tant
for
the
reac
tion
U~C
2O4!
214H
1�
U41
12C
2H2O
4w
asob
tain
edas
K5
1.5
310
211
mol
22
dm6 ,
and
from
this
the
solu
bilit
ypr
oduc
tof
U~C2O
4!2
was
obta
ined
asK
s05
K(K
a1K
a2)2
57.
0310
22m
ol3
dm2
9w
ithdi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
take
nfr
omR
ef.
1.
Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
Va
T/
c 2 a E b A c C Me
Iso
ox so bo atm
wa
so so the
wi
ur so co on
J
for
uran
ium
cont
ent
eith
erph
otom
etric
ally
with
arse
nazo
IIIin
4m
oldm
231
or,
athi
gher
uran
ium
conc
entr
atio
ns,
titrim
etric
ally
with
stan
dard
KM
nO4
solu
tion.
anal
yzed
grav
imet
rical
lyfo
rur
aniu
m~a
sU 3
O8!
,an
dtit
rimet
rical
lyfo
rox
alat
eco
nten
t.It
cont
aine
d2%
free
oxal
icac
id.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hor!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 D.
I.R
yabc
hiko
van
dM
.M
.S
enya
vina
,E
ds.,An
aly
tica
lC
he
mis
try
of
Ura
niu
m~in
Rus
sian
!~A
cad.
Sci
.U
SS
R,
1962!
,p.
134.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4) 2
;@2
847-
15-6#
Sod
ium
oxal
ate;
C 2O4N
a 2;
@62-
76-0
#W
ater
;H 2
O;@
7732
-18-
5#
N.
M.
Nik
olae
va,
Izv.
Sib
irsk.
Otd
el.
Aka
d.N
auk
SS
SR
,S
er.
Khi
m.
Nau
k.6,
64–
9~1
979!
.
riabl
es:
Pre
pare
dby
:
K:2
98–
363
/mol
dm2
3 :0.0
1J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyin
0.01
mol
dm2
3C
2O4N
a 2so
lutio
nsof
U~C
2O4!
2•6H
2Oas
afu
nctio
nof
tem
pera
turea
Tem
pera
ture
~°C
!U
~C2O
4!2
(103
c 1/m
oldm
23 )
255.
52
405.
95
506.
21
606.
51
706.
68
807.
25
907.
71
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sU
~C2O
4!2•
6H2O
was
uilib
rate
dw
ith50
ml0
.01
mol
dm23
C2O
4Na 2
solu
tion
ina
rmos
tate
dte
flon
vess
el.
Agi
tatio
nof
the
mix
ture
was
rrie
dou
tby
mea
nsof
ast
ream
ofar
gon
gas.
Equ
ilibr
ium
sre
ache
dw
ithin
4–
5h.
Sat
urat
edso
lutio
nsw
ere
anal
yzed
uran
ium
cont
ent
eith
erph
otom
etric
ally
with
arse
nazo
IIIin
mol
dm2
31or
,at
high
erur
aniu
mco
ncen
trat
ions
,im
etric
ally
with
stan
dard
KM
nO4
solu
tion.
U~C
2O4!
2•6H
2Ow
aspr
epar
edby
addi
ngho
t~9
0°C
!so
lutio
nof
oxal
icac
idsa
tura
ted
atro
omte
mpe
ratu
reto
abo
iling
solu
tion
ofU
~IV
!ob
tain
edby
elec
trol
ytic
redu
ctio
nof
UO 2C
l 2.
Pal
egr
een
hexa
hydr
ate
was
kept
onw
ater
bath
for
30m
in,
filte
red,
and
was
hed
thre
eor
four
times
with
hot
wat
er.
The
prod
uct
was
anal
yzed
grav
imet
rical
lyfo
rur
aniu
m~a
sU 3
O8!
,an
dtit
rimet
rical
lyfo
rox
alat
eco
nten
t.It
cont
aine
d2%
free
oxal
icac
id.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hor!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 D.
I.R
yabc
hiko
van
dM
.M
.S
enya
vina
,E
ds.,An
aly
tica
lC
he
mis
try
of
Ura
niu
m~in
Rus
sian
!~A
cad.
Sci
.U
SS
R,
1962!
,p.
134.
606606 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!P
erch
loric
acid
;H
ClO 4
;@7
601-
90-3#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
N.
M.
Nik
olae
va,
Izv.
Sib
irsk.
Otd
el.
Aka
d.N
auk
SS
SR
,S
er.
Khi
m.
Nau
k.6,
64–
9~1
979!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8–
363
c 2/m
oldm
23 :
0.1
and
0.73
5J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyin
HC
lsol
utio
nsof
U~C
2O4!
2•6H
2Oas
afu
nctio
nof
tem
pera
turea
HC
lO4
(c2
/mol
dm2
3 )T
empe
ratu
re~°
C!
U(1
05c 1
/mol
dm2
3 )H
ClO
4
(c2
/mol
dm2
3 )T
empe
ratu
re~°
C!
U(1
05c 1
/mol
dm2
3 )
0.10
0525
1.5
0.73
525
3.75
401.
840
6.35
502.
050
9.20
603.
460
15.2
704.
670
21.6
806.
880
30.8
9010
.790
40.6
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.
Add
ition
alIn
form
atio
n:T
heau
thor
desc
ribed
the
solu
bilit
yof
U~C2O
4!2•
6H2O
in0.
1m
oldm
23
HC
lby
the
reac
tion
U~C
2O4!
2•6H
2O~s
!�U
~C2O
4!2~
aq!
In0.
735
mol
dm2
3H
Clt
hefo
llow
ing
reac
tion
was
repo
rted
tota
kepl
ace
inth
eso
lutio
n:
U~C
2O4!
2~aq
!12H
1�
U~C
2O4!
211
H2C
2O4
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
U~C
2O4!
2•6H
2Ow
aseq
uilib
rate
dw
ith50
mL
solu
tion
ofth
ede
sire
dco
mpo
sitio
nin
ath
erm
osta
ted
teflo
nve
ssel
.A
gita
tion
ofth
em
ixtu
rew
asca
rrie
dou
tby
mea
nsof
ast
ream
ofar
gon
gas.
Equ
ilibr
ium
was
reac
hed
with
in4
–5
h.S
atur
ated
solu
tions
wer
ean
alyz
ed
U~C
2O4!
2•6H
2Ow
aspr
epar
edby
addi
ngho
t~9
0°C
!so
lutio
nof
oxal
icac
idsa
tura
ted
atro
omte
mpe
ratu
reto
abo
iling
solu
tion
ofU
~IV
!ob
tain
edby
elec
trol
ytic
redu
ctio
nof
UO 2C
l 2.
Pal
egr
een
hexa
hydr
ate
was
kept
onw
ater
bath
for
30m
in,
filte
red,
and
was
hed
thre
eor
four
times
with
hot
wat
er.
The
prod
uct
was
Co
~1!
~2!
~3!
Va
T/
c 2 a E Me
Iso
eq the
ca wa
for
4 titr
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
189
190
E
194
190
P
0.75
202
214
216
221
218
215
218
225
201
204
D4.
09
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b ~D
!di
rect
aco
untin
g;~E
!a
coun
ting
ofel
ectr
odep
osite
dur
aniu
m;
~P!
prec
ipita
tion
ofU~
IV!
with
La~I
II!.
c Cal
cula
ted
byco
mpi
ler
byus
ing
the
aver
age
valu
eof
auth
ors’
data
ofur
aniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
.d T
his
valu
ew
asno
tco
nsid
ered
whe
nta
king
the
aver
age
valu
e.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.F
irst,
the
usua
lapp
roac
hw
asd
inw
hich
exce
ssU~C
2O4!
2•6H
2Ow
asst
irred
with
lutio
nsof
oxal
icac
idin
ath
erm
osta
ted
vess
elfo
r8
–10
htil
equi
libriu
mw
asre
ache
d.T
opr
even
tox
idat
ion
ofan
ium~
IV!
byO
2du
ring
the
satu
ratio
npr
oces
s,ct
roly
tical
lypr
oduc
edH 2
was
bubb
led
thro
ugh
the
solu
tion.
mpl
esof
the
satu
rate
dso
lutio
nsw
ere
take
nw
itha
pipe
tteth
aco
tton
wad
anda
coun
ted
ona
plat
inum
targ
et.
Whe
nh
oxal
icac
idco
ncen
trat
ion
was
pres
ent,
the
sam
ples
wer
et
evap
orat
edan
dig
nite
din
apo
rcel
ain
cruc
ible
tore
mov
eal
icac
id,
the
dry
resi
due
was
then
diss
olve
din
mol
dm2
3H
NO
3,an
dm
ount
edon
toa
plat
inum
targ
et.
lubi
lity
data
soob
tain
edw
ere
illre
prod
ucib
le,
fluct
uatin
gth
inup
to30
%–
50%
beca
use
oftu
rbid
ityin
som
esa
tura
ted
lutio
ns,
whi
chco
uld
not
bere
mov
edby
filtr
atio
n.T
helo
win
gm
odifi
catio
nof
the
met
hod
yiel
ded
good
resu
lts.
–40
mg
ofU~
C2O
4!2•
6H2O
and
aso
lutio
nof
oxal
icac
idre
plac
edin
ate
sttu
be,
and
ast
ream
ofN
2w
aspa
ssed
ough
for
5–
10m
in.
With
out
inte
rrup
ting
the
flow
ofga
sth
et
tube
was
seal
ed,
and
then
agita
ted
for
30–
360
hin
an-t
herm
osta
ted
appa
ratu
s.T
hree
sam
ples
for
uran
ium
term
inat
ion
wer
eta
ken
from
each
test
tube
,an
dur
aniu
ms
dete
rmin
edby
diffe
rent
met
hods
inea
chon
e:~i
!by
dire
ctco
untin
gon
apl
atin
umta
rget
eith
erw
ithor
with
out
oxal
icid
rem
oval
,~ii!
aco
untin
gof
uran
ium
depo
site
dct
roly
tical
lyon
plat
inum
from
HN
O 3so
lutio
nsat
pH3
with
rren
tde
nsity
of0.
5A
cm2
2 ,~ii
i!by
copr
ecip
itatio
nof
aniu
m~IV
!w
ithLa
F 3~0
.5m
gLa
~III
!us
ed!.
The
last
met
hod
deit
poss
ible
toju
dge
the
chan
gein
vale
ncy
ofur
aniu
mrin
gth
epr
oces
sof
satu
ratio
n.S
ince
ityi
elde
dso
lubi
lity
taco
nsis
tent
with
the
othe
rtw
om
etho
ds,
the
auth
ors
nclu
ded
that
oxid
atio
nof
U~C2O
4!2
did
not
take
plac
ein
alic
acid
solu
tions
.
U~C
2O4!
2•6H
2Ola
bele
dw
ith23
3 Uw
aspr
epar
edby
redu
ctio
nof
UO
221w
ithro
ngal
ite1
inac
idic
solu
tions
.H 2
and
N 2ga
ses
wer
efr
eed
from
oxyg
enby
pass
ing
them
over
palla
dium
-tre
ated
asbe
stos
orth
roug
hal
kalin
eso
lutio
nof
pyro
gallo
l,re
spec
tivel
y.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
3K
for
mea
sure
men
tsin
seal
edte
sttu
bes
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.
A.
Grin
berg
,L.
E.
Nik
olsk
aya,
G.
I.P
etrz
hak,
V.
I.S
pits
yn,
and
F.
M.
Fili
nov,
Zh.
Ana
l.K
him
.12,
92~1
957!
.
607607IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!O
xalic
acid
;C 2
O4H
2;@1
44-6
2-7#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
A.
A.
Grin
berg
and
G.
I.P
etrz
hak,
Rad
iokh
imiy
a5,31
9–
29~1
963!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
c 2/m
oldm
23 :0
.000
4–
0.75
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU~
C2O
4!2
inox
alic
acid
solu
tionsa
C2O
4H2
(c2
/mol
dm2
3 )aU
~C2O
4!2•
6H2O
~mg
dm2
3 !M
etho
dof
U~IV
!de
term
inat
ionb
U~C
2O4!
2
(104
c 1/m
oldm
23 )c
0.00
0429
39D
0.66
1
3935
E
3332
P
0.00
0538
4136
3543
4443
4346
4245
39D
0.77
9
40E
35P
0.00
553
4952
5458
5660
5761
60E
1.07
0.04
267
7266
D1.
36
7171
71E
6977
73P
0.05
8480
8181
8891
8789
8583
7476
D1.
60
8591
E
7678
P
0.12
511
611
411
811
611
411
511
7D
2.22
0.21
140
D2.
76
141
E
152
P
0.25
154
151
149
145
151
154
142
D2.
95
156
171
161
E
156
156
154
P
0.33
516
716
216
6D
3.16
0.50
201
190
122d
187
176
181
172
181
183
D3.
57
Me
Iso
trie
so un ur ele
Sa
wi
hig
firs
ox 1.5
So
wi
so fol
20 we
thr
tes
air
de wa
a ac ele
cu ur ma
du da co ox
J
was
hed
anu
mbe
rof
times
with
the
solu
tion
inw
hich
the
solu
bilit
yw
asto
bem
easu
red
and
shak
enw
ithth
esa
me
solu
tion
ina
glas
s-st
oppe
red
flask
unde
rN
2at
mos
pher
ein
ath
erm
osta
ted
bath
.A
fter
24h
the
satu
rate
dso
lutio
nw
asw
ithdr
awn
thro
ugh
asu
ctio
nfil
ter
appa
ratu
s,an
dan
alyz
edfo
rur
aniu
mco
nten
t.S
ampl
esof
the
satu
rate
dso
lutio
nsw
ere
conv
erte
dto
UO 2
SO
4by
fum
ing
with
conc
entr
ated
H 2SO
4,di
lute
dw
ithw
ater
,an
del
ectr
odep
osite
don
apl
atin
umca
thod
eas
UF 4
from
sodi
umflu
orid
eso
lutio
n.T
heca
thod
ew
asth
enig
nite
dan
d aco
unte
d.A
llm
easu
rem
ents
wer
em
ade
onU
~C2O
4!2
sam
ples
3da
ysol
d,si
nce
fres
hly
prec
ipita
ted
U~C
2O4!
2w
asre
port
edto
have
aco
nsid
erab
lyhi
gher
solu
bilit
y.1
vigo
rous
lyfo
r3
hin
N 2at
mos
pher
e.T
hela
stop
erat
ion
was
repe
ated
thre
etim
es.
Sou
rce
and
purit
yof
chem
ical
sus
edno
tsp
ecifi
ed.
Est
imat
edE
rror
:U
rani
umco
ncen
trat
ion:
stan
dard
devi
atio
nof
the
mea
n5
(6–
9)%
~aut
hor!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 E.
L.W
agne
r,T
heS
olub
ility
and
Sol
ubili
tyP
rodu
ctof
U~I
V!
Oxa
late
,R
epor
tR
L-4.
6.32
1.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#A
mm
oniu
mox
alat
e;~N
H4!
2C2O
4;@1
113-
38-8#
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
0#W
ater
;H 2
O;
@773
2-18
-5#
F.
A.
Zak
haro
vaan
dA
.I.
Mos
kvin
,Z
h.N
eorg
.K
him
.5,
1228
–33
~196
0!;
Rus
s.J.
Inor
g.C
hem
.5,59
2–
5~1
960!
.
riabl
es:
Pre
pare
dby
:
/mol
dm2
3 :0.0
7–
0.24
/mol
dm2
3 :0.5
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
U~C
2O4!
2•6H
2Oin
~NH
4!2C
2O4
solu
tions
cont
aini
ng0.
5m
oldm2
3H
Cla
~NH
4!2C
2O4
(c2
/mol
dm2
3 )U
~C2O
4!2
(104
c 1/m
oldm
23 )
0.07
02.
15
0.10
52.
30
0.14
02.
66
0.15
82.
90
0.17
63.
10
0.19
34.
30
0.21
16.
28
0.22
810
.8
0.24
115
.9
easu
rem
ents
wer
eco
nduc
ted
atun
spec
ified
tem
pera
ture
.C
ompo
sitio
nof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.
ditio
nali
nfor
mat
ion:
ein
crea
sing
solu
bilit
yof
U~C2O
4!2
with
incr
easi
ng~N
H4!
2C2O
4co
ncen
trat
ion
was
ascr
ibed
byth
eau
thor
sto
the
form
atio
nof
U~I
V!
alat
oco
mpl
exes
inth
esa
tura
ted
solu
tions
.F
rom
thei
rso
lubi
lity
data
the
auth
ors
obta
ined
over
all
inst
abili
tyco
nsta
nts
ofth
eC
2O4)
x42
2x
(x5
1–
4)
com
plex
es.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
cont
aini
ngex
cess
solid
reeq
uilib
rate
dfo
r4
–6
hw
hich
was
suffi
cien
tfo
rui
libriu
mto
bere
ache
d.U
rani
umin
the
satu
rate
dso
lutio
nsw
asde
term
ined
bya
coun
ting.
U~C
2O4!
2•6H
2Ow
aspr
epar
edfr
om23
3 U-la
bele
dU
O 2~N
O3!
2
solu
tion
byre
duct
ion
with
sodi
umsu
lfoxy
late
,an
dsu
bseq
uent
prec
ipita
tion.
U~IV
!ox
alat
ew
asdi
ssol
ved
in~N
H4!
2C2O
4
solu
tion,
the
solu
tion
was
cent
rifug
ed,
and
the
oxal
ato
com
plex
deco
mpo
sed
with
HC
l.U~C
2O4!
2•6H
2Opr
ecip
itate
dw
asce
ntrif
uged
,w
ashe
dto
rem
ove
exce
ssox
alic
acid
,an
dai
rdr
ied.
Sou
rce
and
purit
yof
chem
ical
sno
tre
port
ed.
Est
imat
edE
rror
:a
coun
ting:
prec
isio
n65%
~aut
hors!
.
608608 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ox
alat
e!;U
~C2O
4!2;
@284
7-15
-6#~2
!O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
~3!
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
1#~4
!W
ater
;H 2
O;
@773
2-18
-5#
G.
D.
Dor
ough
,U
.S
.A
t.E
nerg
yC
omm
.,T
ID52
90,
Boo
k2,
1958
,pp
.53
5–
42.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
100w
2/m
ass%
:0.2
6c 3
/mol
dm2
3 :3.0
8an
d6.
05
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofU~
C2O
4!2•
6H2O
inC
2H2O
4–
HC
lsol
utio
nsa
HC
l(c
3/m
oldm
23 )
C2H
2O4
(100
w2
/mas
s%)
U~m
gdm
23 !
U~C
2O4!
2c
(106
c 1/m
oldm
23 )
3.08
40.
261.
4
1.64
1.52
b6.
39
6.05
0.26
813
.6
15.4
14.5
b60
.9
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b A
vera
geva
lue~
auth
or!.
c Cal
cula
ted
byco
mpi
ler.
Add
ition
alin
form
atio
n:A
ttem
pts
mad
eby
the
auth
orto
calc
ulat
eth
eso
lubi
lity
prod
uct
ofU
~C2O
4!2
wer
eun
succ
essf
ulbe
caus
eof
unkn
own
exte
ntof
hydr
olys
isan
dco
mpl
exat
ion
ofU~I
V!.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Gre
atca
rew
asta
ken
topr
even
tox
idat
ion
ofU~
IV!
oxal
ate
sinc
eU
O 2C2O
4is
rela
tivel
yqu
iteso
lubl
e.P
rior
toso
lubi
lity
dete
rmin
atio
n,th
eso
lutio
nsw
ere
boile
dto
rem
ove
diss
olve
dO 2an
dth
enke
ptun
der
N 2at
mos
pher
e.A
sam
ple
ofU
O 221-f
ree
U~IV
!ox
alat
ew
as
U~C
2O4!
2•6H
2Ow
aspr
epar
edfr
omU
O 3.T
hela
tter
was
diss
olve
din
HC
l~1:
1!,
the
resu
lting
solu
tion
ofU
O 2Cl 2
was
redu
ced
elec
trol
ytic
ally
toU~I
V!,
whi
chw
asth
enpr
ecip
itate
dw
ithox
alic
acid
.The
prec
ipita
tew
asfil
tere
d,w
ashe
dw
ithbo
iled
3m
oldm
23
HC
l,an
dsh
aken
with
oxyg
en-f
ree
3m
oldm2
3H
Cl
Co
~1!
~2!
~3!
~4!
Va
c 2 c 3 a M Ad
Th
ox U~
Me
Iso
we
eq
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
d.
5.11
.4.
Ura
nium
„V
I…D
ioxo
„ox
alat
e…
5.11
.5.
Eva
luat
ion
ofth
eU
O2C
2O4¿
H2O
Sys
tem
mpo
nent
s:E
valu
ator
:
Ura
nium
~VI!
diox
o~ox
alat
e!;U
O2C
2O4;
@203
1-89
-2#W
ater
;H 2
O;
@773
2-18
-5#J.
Hala
,D
epar
tmen
tof
Inor
gani
cC
hem
istr
y,M
asar
ykU
nive
rsity
,61
137
Brn
o,C
zech
Rep
ublic
,M
ay20
00
Crit
ical
Eva
luat
ion:
The
mos
tex
tens
ive
stud
yof
the
solu
bilit
yof
UO
2C2O
4in
wat
eris
that
ofC
olan
i1w
hore
port
edso
lubi
litie
sov
erth
ete
mpe
ratu
reer
valf
rom
284.
1to
373.
1K
.O
ther
data
have
been
publ
ishe
dby
Bol
shak
ove
ta
l.2–
4in
thei
rst
udie
sof
vario
uste
rnar
ysy
stem
s.W
hile
irva
lue
at29
8.1
K~10
0w
15
0.58
mas
s%
;m15
0.01
63m
olkg
21 !
2,3
isin
exce
llent
agre
emen
tw
ithth
atof
Col
ani,
1th
eir
valu
eat
3.1
K~1
00w
15
0.21
mas
s%
;m15
0.00
588
mol
kg2
1 !4
falls
belo
wth
eC
olan
i’sso
lubi
lity/
tem
pera
ture
curv
e.It
is,
ther
efor
e,re
com
-nd
edto
use
the
data
ofC
olan
ias
tent
ativ
eva
lues
.T
hetw
om
easu
rem
ents
at28
7.1
and
373.
1K
repo
rted
byE
belm
en5
are
som
ewha
tbi
ous
sinc
eit
isno
tcle
arw
heth
erth
eyre
fer
toth
ean
hydr
ous
salt
orto
the
trih
ydra
te,U
O2C
2O4•
3H2O
.A
ssum
ing
the
orig
inal
data
refe
rth
etr
ihyd
rate
whi
chw
asre
port
edto
beth
eeq
uilib
rium
phas
ein
aque
ous
HN
O3
solu
tions
cont
aini
ngle
ssth
an31
mas
s%
HN
O3,
1,2
the
lubi
lity
ofth
ean
hydr
ous
salt
at37
3.1
Kis
foun
dto
be10
0w
15
3.06
mas
s%
orm15
0.08
8m
olkg
21 ,
whi
chis
inex
celle
ntag
reem
ent
thC
olan
i’sm
easu
rem
ents
.T
heE
belm
en’s
valu
eat
287.
1K
seem
sto
beer
rone
ousl
yhi
gh.
fere
nces
:
.C
olan
i,B
ull.
Soc
.C
him
.F
ranc
e37,
856
~192
5!.
.A
.B
olsh
akov
and
S.
S.
Kor
ovin
,T
rudy
Mos
k.In
st.
Ton
koiK
him
.T
ekhn
ol.
7,16
5~1
958!
.
.A
.B
olsh
akov
and
S.
S.
Kor
ovin
,Z
h.N
eorg
.K
him
.2,
1940
~195
7!.
.A
.B
olsh
akov
,V
.E
.P
lyus
hche
v,an
dT
.A
.E
rmak
ova,
Zh.
Neo
rg.
Khi
m.
2,22
2~1
957!
.
.E
belm
en,
Ann
.C
him
.P
hys.5
,18
9~1
842!
.
609609IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.11
.3.
Pot
assi
umT
etra
kis
„O
xala
to…
Ura
nate„IV…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Pot
assi
umte
trak
is~oxa
lato!
uran
ate~I
V!;
K4U
~C2O
4) 4
;@
#~2
!W
ater
;H 2
O;
@773
2-18
-5#
N.
A.
Orlo
v,Z
h.R
uss.
Fiz
.K
him
.O
bsh.~J
.R
uss.
Phy
s.C
hem
.S
oc.!
34,
375
–80
~190
2!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
0J.
Hala
Exp
erim
enta
lDat
aT
heso
lubi
lity
inw
ater
ofK 4
U~C
2O4!
4w
asre
port
edto
be21
.73
gsa
ltin
100
gH
2Oat
17°C
.Thi
sva
lue
was
obta
ined
from
anex
perim
ent
whe
re4.
9878
gsa
tura
ted
solu
tion
yiel
ded
0.89
03g
dry
resi
due
afte
rev
apor
atio
n.T
heco
mpo
sitio
nof
the
resi
due
was
not
spec
ifie
Ass
umin
gth
ere
sidu
eto
beth
ehe
xahy
drat
e,K
4U~C
2O4!
4•6H
2O,
the
com
pile
rca
lcul
ated
the
solu
bilit
yof
K4U
~C2O
4!4
tobe
m1
50.
247
mol
kg2
1 .
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
d,no
deta
ilsre
port
ed.
K4U
~C2O
4!4•
6H2O
was
prep
ared
asgr
een
crys
tals
bydi
ssol
ving
U~C
2O4!
2•6H
2Oin
conc
entr
ated
solu
tion
ofK 2C
2O4,
and
allo
win
gth
eso
lutio
nto
crys
talli
ze.
The
com
posi
tion
ofth
epr
oduc
twas
confi
rmed
bych
emic
alan
alys
is:t
hepr
oduc
tyie
lded
63.1
7%K 2
U2O
71K
2CO
3up
onig
nitio
n,an
d83
.91%
UO
2SO
41K
2SO
4up
onfu
min
gw
ithco
ncen
trat
edH 2S
O4.
Cal
cula
ted
for
the
hexa
hydr
ate:
63.2
7%an
d83
.63%
,re
spec
tivel
y.
Co
~1!
~2!
int
the
27 me
du to so wi
Re
1 M 2 K 3 K 4 K 5 M
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4;
@203
1-89
-2#W
ater
;H 2
O;
@773
2-18
-5#M
.C
olan
i,B
ull.
Soc
.C
him
.F
ranc
e37,
856
–61
~192
5!.
riabl
es:
Pre
pare
dby
:
K:
284
–37
3J.
Ha´ la
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2C2O
4in
wat
eras
afu
nctio
nof
tem
pera
ture
a
Tem
pera
ture
~°C
!U
O2C
2O4
(100
w1
/mas
s%
)U
O2C
2O4
~mol
kg2
1 !b
110.
450.
0126
150.
470.
0132
200.
500.
0140
501.
000.
0282
751.
650.
0469
100
3.06
0.08
82
heeq
uilib
rium
solid
phas
ew
asU
O2C
2O4•
3H2O
,@1
8860
-43-
0#in
alls
olut
ions
.al
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
610610 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4;
@203
1-89
-2#~2
!W
ater
;H 2
O;
@773
2-18
-5#M
.E
belm
en,
Ann
.C
him
.P
hys.5
,18
9–
223~
1842
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:28
7;37
3J.
Ha´ la
Exp
erim
enta
lDat
aT
heso
lubi
lity
inw
ater
ofU
O 2C
2O4
was
repo
rted
tobe
0.8
and
3.4
gsa
ltin
100
gH
2Oat
14an
d10
0°C
,re
spec
tivel
y.N
ote
:It
itno
tcl
ear
whe
ther
thes
efig
ures
refe
rto
the
trih
ydra
te,
UO
2C2O
4•3H
2O,
@188
60-4
3-0#,
orto
the
anhy
drou
ssa
lt.A
ssum
ing
that
they
refe
rto
the
trih
ydra
te,
the
com
pile
rca
lcul
ated
the
solu
bilit
yof
the
anhy
drou
ssa
ltas
w15
0.69
and
3.06
mas
s%
,re
spec
tivel
y.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.U
O 2C2O
4•3H
2Ow
aspr
epar
edby
prec
ipita
tion
from
aco
ncen
trat
edso
lutio
nof
UO 2~N
O3!
2w
itha
hot
conc
entr
ated
solu
tion
ofox
alic
acid
.A
visc
ous
prod
uct
was
obta
ined
whi
chtu
rned
into
aye
llow
crys
talli
nepo
wde
raf
ter
som
etim
e.It
was
purifi
edby
recr
ysta
lliza
tion.
Co
~1!
~2!
Va
T/
a T b C Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
used
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4;
@203
1-89
-2#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
C.
B.
Am
phle
ttan
dO
.T
.D
avid
ge,
J.C
hem
.S
oc.
2938
–9
~195
2!.
riabl
es:
Pre
pare
dby
:
K:
293
0w
2/m
ass
%:
15.1
–69
.5J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofH
NO 3
solu
tions
satu
rate
dw
ithU
O 2C2O
4at
20°C
a
HN
O3
00w
2/m
ass
%)
HN
O3
~mol
kg2
1of
the
HN
O3
/H2O
solv
ent!b
UO
2C2O
4
~g/1
00g
ofth
eH
NO
3/H
2Oso
lven
t!U
O2C
2O4
(100
w1
/mas
s%
)b
UO
2C2O
4
~mol
kg2
1of
the
HN
O3
/H2O
solv
ent!b
15.1
2.40
1.63
1.60
0.04
55
26.8
4.25
1.88
1.85
0.05
25
27.9
4.43
1.87
1.84
0.05
22
35.8
5.68
2.19
2.14
0.06
12
41.5
6.59
2.68
2.61
0.07
49
42.0
6.67
2.84
2.76
0.07
93
46.5
7.38
3.48
3.36
0.09
72
58.9
9.35
4.04b
3.88
0.11
3
69.5
11.0
33.
993.
840.
111
quili
briu
mso
lidph
ase
atth
isH
NO 3co
ncen
trat
ion
isth
ean
hydr
ous
salt,
UO
2C2O
4,@2
031-
89-2#
;at
low
erH
NO 3
conc
entr
atio
nsit
was
etr
ihyd
rate
,U
O 2C
2O4•
3H2O
,@1
8860
-43-
0#.al
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sso
lidw
assh
aken
with
HN
O3
lutio
nsfo
rse
vera
lday
sin
flask
sw
ithse
cure
lyw
axed
pper
s.2
days
suffi
ced
toen
sure
satu
ratio
n.T
hera
teof
alic
acid
deco
mpo
sitio
nw
asfo
und
tobe
too
low
toca
use
ydi
spla
cem
ent
ofeq
uilib
rium
.T
hesa
tura
ted
solu
tions
wer
eal
yzed
for
uran
ium
and,
afte
rre
mov
alof
uran
ium
aspe
roxi
de,
for
free
acid
cont
ent.
Met
hods
ofan
alys
isw
ere
not
spec
ified
.A
ttem
pts
tode
term
ine
the
com
posi
tion
ofth
eso
lidph
ase
bydi
rect
anal
ysis
wer
eon
lypa
rtly
succ
essf
ul,
owin
gto
the
diffi
culti
esen
coun
tere
din
rem
ovin
gad
sorb
edliq
uid
from
the
solid
with
out
was
hing
.O
nego
oddu
plic
ated
dete
rmin
atio
nw
asob
tain
edfo
r58
.9%
HN
O 3sy
stem
.
UO
2C2O
4•3H
2Ow
aspr
epar
edby
prec
ipita
tion
from
aque
ous
UO
2~N
O3!
2so
lutio
nw
ithso
dium
oxal
ate.
The
prec
ipita
tew
asfil
tere
d,w
ashe
dfr
eefr
omN
O 32,
and
drie
dat
60°C
.Ana
lysi
sfo
rur
aniu
man
dox
alat
eco
nten
tco
rres
pond
edto
the
trih
ydra
te.
Sou
rce
and
purit
yof
mat
eria
lsus
edno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
611611IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.11
.6.
Eva
luat
ion
ofth
eU
O2C
2O4¿
HN
O3¿
H2O
Sys
tem
Com
pone
nts:
Eva
luat
or:
~1!
Ura
nium
~VI!
diox
o~ox
alat
e!;U
O2C
2O4;
@203
1-89
-2#~2
!N
itric
acid
;H
NO
3;@7
697-
37-2#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
The
solu
bilit
yof
UO 2
C2O
4in
aque
ous
HN
O 3so
lutio
nsw
asst
udie
din
four
docu
men
ts.
InR
efs.
1–
3th
eso
lubi
lity
ofU
O2C
2O4
was
mea
sure
das
afu
nctio
nof
HN
O3
conc
entr
atio
n,in
mas
s%
,at
293.
1K
,1,
2or
298.
1an
d32
3.1
K,
3w
hile
Mos
kvin
and
Zak
haro
va4
mea
sure
dth
eso
lubi
lity
asa
func
tion
ofco
ncen
trat
ion
ofH
NO
3in
mol
dm2
3at
293.
1K
.T
hetw
ose
ries
ofm
easu
rem
ents
perf
orm
edat
293.
1K1,
2do
not
coin
cide
.T
heda
taof
Am
phle
ttan
dD
avid
ge2
are
low
erth
anth
ose
ofC
olan
i,1
the
diffe
renc
ebe
ing
mor
epr
onou
nced
with
incr
easi
ngH
NO 3
conc
entr
atio
n.T
here
ason
for
this
disc
repa
ncy
isno
tcle
arsi
nce
Col
ani
1di
dno
trep
orta
nyde
tails
ofth
epr
oced
ure
used
.A
noth
erdi
scre
panc
yex
ists
betw
een
the
data
ofC
olan
i1
and
thos
eof
Bol
shak
ovan
dK
orov
in.
3W
hile
inth
ela
tter
docu
men
tth
eso
lubi
lity
ofU
O2C
2O4
was
repo
rted
toin
crea
sew
ithin
crea
sing
tem
pera
ture
,th
eda
taob
tain
edat
298.
1K
3se
emto
beso
mew
hat
low
erth
anth
ose
ofC
olan
i1
take
nat
293.
1K
.T
heda
taof
Mos
kvin
and
Zak
haro
va4
cann
otbe
com
pare
dw
ithth
ose
inR
efs.
1–
3be
caus
eof
diffe
rent
conc
entr
atio
nun
itsus
ed.
For
thes
ere
ason
sno
neof
the
publ
ishe
dda
taca
nbe
give
npr
efer
ence
,an
dea
chse
tof
data
can
beas
tent
ativ
eon
efo
rth
esp
ecifi
cco
nditi
ons
for
whi
chth
eyw
ere
obta
ined
.A
sfo
rth
eeq
uilib
rium
solid
phas
es,C
olan
i1
and
Bol
shak
ovan
dK
orov
in3ag
ree
inth
atth
etr
ihyd
rate
,UO 2C
2O4•
3H2O
,@18
860-
43-0#
,ex
ists
inso
lutio
nsco
ntai
ning
less
than
31m
ass
%H
NO
3.H
owev
er,a
t.48
.5m
ass
%H
NO 3,
Bol
shak
ovan
dK
orov
in3re
port
edth
eso
lidph
ase
tobe
the
mon
ohyd
rate
,U
O2C
2O4•
H2O
,@
#,w
hile
Am
phle
ttan
dD
avid
ge2re
port
edth
ean
hydr
ous
salt,
UO
2C2O
4,@2
031-
89-2#
tobe
ineq
uilib
rium
with
58.9
mas
s%
HN
O 3.
Ref
eren
ces:
1 M.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce37
,85
6~1
925!
.2 C
.B
.A
mph
lett
and
O.
T.
Dav
idge
,J.
Che
m.
Soc
.29
38~195
2!.
3 K.
A.
Bol
shak
ovan
dS
.S
.K
orov
in,
Tru
dyM
osk.
Inst
.T
onko
iKhi
m.
Tek
hnol
.7,
165
~195
8!.
4 A.
I.M
oskv
inan
dE
.A
.Z
akha
rova
,Z
h.N
eorg
.K
him
.4,21
51~1
959!
.
Co
~1!
~2!
~3!
Va
T/
10 (1 a E th b C Me
Iso
so sto
ox an an
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
Wat
er;
H 2O
;@77
32-1
8-5#
K.
A.
Bol
shak
ovan
dS
.S
.K
orov
in,
Tru
dyM
osk.
Inst
.T
onko
iK
him
.T
ekhn
ol.7
,16
5–
70~1
958!
.
riabl
es:
Pre
pare
dby
:
K:
298;
323
0w2
/mas
s%
:0
–77
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofH
NO 3
solu
tions
satu
rate
dw
ithU
O 2C2O
4at
25an
d50
°C
HN
O3a
00w
2/m
ass
%)
UO
2C2O
4a
(100
w1
/mas
s%
)S
olid
phas
ec
HN
O3b
(100
w2
/mas
s%
)U
O2C
2O4b
(100
w1
/mas
s%
)S
olid
phas
ec
00.
58A
01.
00A
3.98
0.85
A4.
381.
49A
5.70
1.12
A6.
481.
73A
6.68
1.11
A11
.49
2.34
A
9.50
1.16
A20
.36
2.81
A
10.2
01.
20A
30.3
73.
85A
13.1
91.
59A
34.9
04.
68A
16.5
01.
71A
43.2
46.
91A
19.7
51.
73A
47.2
010
.35
e
20.7
01.
95A
61.0
8.42
e
30.7
02.
08A
65.1
07.
26e
39.1
22.
83A
73.8
37.
55e
48.5
04.
76A1
B
51.2
04.
32B
53.8
63.
90B
60.1
33.
70B
62.7
23.
80B
67.1
04.
10B1
Cd
75.9
62.
39B1
Cd
77.1
02.
12B1
Cd
t25
°C.
t50
°C.
c A:
UO
2C2O
4•3H
2O,
@188
60-4
3-0#;
B:U
O2C
2O4•
H2O
,@#;
C:
UO
2~N
O3!
2,@1
0102
-06-
4#.d T
heau
thor
sex
plai
ned
the
pres
ence
ofU
O2~
NO
3!2
inth
eso
lidph
ase
byth
ere
actio
nU
O2C
2O41
2HN
O3�
UO
2~N
O3!
21C
2H2O
4,si
nce
the
equi
libriu
msa
tura
ted
solu
tions
cont
aine
dm
ore
oxal
ate
than
wou
ldco
rres
pond
toth
est
oich
iom
etry
ofU
O2C
2O4.
e The
solid
phas
eco
ntai
ned
less
than
3m
ole
H2O
/mol
eU
O 2C
2O4
;th
eex
act
com
posi
tion
ofth
ehy
drat
eco
uld
not
bede
term
ined
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:E
stim
ated
Err
or:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
aseq
uilib
rate
dw
ithH
NO 3
solu
tions
ofth
ede
sire
dco
mpo
sitio
nin
ther
mos
tate
dve
ssel
seq
uipp
edw
itha
stirr
eran
da
hydr
aulic
mer
cury
seal
.E
quili
briu
mtim
ew
asno
tre
port
ed.
Sam
ples
ofth
esa
tura
ted
solu
tions
wer
ew
ithdr
awn
usin
ga
pipe
tteeq
uipp
edw
itha
glas
sw
oolfi
lter,
and
wei
ghed
.In
the
sam
ples
,ur
aniu
mw
asde
term
ined
bypo
tent
iom
etric
titra
tion
with
KM
nO4,
and
NO 32
byth
eK
jeld
ahlm
etho
d.E
quili
briu
mso
lidph
ases
wer
eid
entifi
edby
the
met
hod
ofin
ert
com
pone
nt(N
O32
)an
dby
chem
ical
anal
ysis
.
Tem
pera
ture
:pr
ecis
ion6
0.1
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
612612 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4;
@203
1-89
-2#~2
!N
itric
acid
;H
NO
3;@7
697-
37-2#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
M.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce37
,85
6–
61~1
925!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
310
0w
2/m
ass%
:1.
84–
31.0
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofH
NO 3
solu
tions
satu
rate
dw
ithU
O 2C2O
4at
20°C
a
HN
O3
(100
w2
/mas
s%
)U
O2C
2O4
(100
w1
/mas
s%
)
UO
2C2O
4
~mol
kg2
1of
the
HN
O3
/H2O
solv
ent!b
1.84
0.79
0.02
22
5.34
1.19
0.03
36
12.1
41.
560.
0443
17.6
01.
760.
0500
21.4
71.
880.
0535
31.0
02.
280.
0652
a The
equi
libriu
mso
lidph
ase
was
UO
2C2O
4•3H
2O,
@188
60-4
3-0#,
inal
lsol
utio
ns.
b Cal
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.N
othi
ngsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
~2!
~3!
Va
T/
10 (1 a A b A
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#W
ater
;H2O
;@77
32-1
8-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
riabl
es:
Pre
pare
dby
:
K:2
93/m
oldm
23 :
0.5
–3.
0J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
inH
ClO
4so
lutio
nsa
HC
lO4
2/m
oldm
23 !
UO
2C2O
4
(c1/1
02m
oldm
23 !
Ksb
(109
mol
2dm
26 !
0.5
2.31
2.8
1.0
2.77
1.55
1.5
3.12
2.8
2.0
3.44
2.0
2.5
3.66
1.4
3.0
3.69
1.0
2.06
0.9c
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
olub
ility
prod
uctK
s5@U
O22
1#@
C2O
422
#.It
was
obta
ined
byth
eau
thor
sfr
omth
eso
lubi
lity
ofU
O2C
2O4,
and
the
equi
libriu
mco
ncen
-at
ion
ofth
eox
alat
eio
n.T
hela
tter
was
calc
ulat
edby
usin
gdi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
~Ka1
50.
108,
Ka2
56.
4310
25;
sour
ceot
repo
rted
!,an
das
sum
ing
the
equi
libriu
mco
ncen
trat
ion
ofH
1io
nw
aseq
ualt
oth
eH
ClO 4
conc
entr
atio
nus
ed.
vera
geva
lue~
auth
ors!.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sU
O2C
2O4•
3H2O
was
stirr
edth
the
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.el
imin
ary
expe
rimen
tssh
owed
that
this
was
suffi
cien
tto
ach
equi
libriu
m.
Con
cent
ratio
nof
uran
ium
inth
esa
tura
ted
lutio
nsw
asde
term
ined
grav
imet
rical
lyas
U3O
8af
ter
apor
atin
gan
dig
nitin
gan
aliq
uot
ofth
esa
tura
ted
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Ura
nium
conc
entr
atio
n:pr
ecis
ion6
2.5%
~aut
hors!
.
613613IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
,U
O 2C
2O4
;@2
031-
89-2#
~2!
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
~3!
Wat
er;
H 2O
;@77
32-1
8-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
Var
iabl
es;
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.5
–3.
0J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
inH
NO
3so
lutio
nsa
HN
O3
(c2
/mol
dm2
3 !U
O2C
2O4
(c1/1
02m
oldm
23 !
Ksb
(109
mol
2dm
26 !
0.5
2.67
4.9
1.0
3.54
3.4
1.5
4.17
2.5
2.0
4.53
3.4
2.5
5.22
2.9
3.0
5.61
2.3
3.26
1.3c
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b S
olub
ility
prod
uctK
s5@U
O221
#@C
2O422
#.It
was
obta
ined
byth
eau
thor
sfr
omth
eso
lubi
lity
ofU
O2C
2O4,
and
the
equi
libriu
mco
ncen
-tr
atio
nof
oxal
ate
ion.
The
latte
rw
asca
lcul
ated
byus
ing
diss
ocia
tion
cons
tant
sof
oxal
icac
id~K
a15
0.10
8,K
a25
6.43
102
5;
sour
ceno
tre
port
ed!,
and
assu
min
geq
uilib
rium
conc
entr
atio
nof
H1
ion
was
equa
lto
the
HC
lO 4co
ncen
trat
ion
used
.C
ompl
exat
ion
ofU
O22
1w
ithN
O32
was
not
take
nin
toac
coun
tw
hich
,ac
cord
ing
toth
eau
thor
s,w
asth
ere
ason
for
Ks
bein
ghi
gher
inH
NO 3
solu
tions
than
inH
ClO 4
solu
tions
.c A
vera
geva
lue~
auth
ors!.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
asst
irred
with
the
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.P
relim
inar
yex
perim
ents
show
edth
atth
isw
assu
ffici
ent
tore
ach
equi
libriu
m.
Con
cent
ratio
nof
uran
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edgr
avim
etric
ally
asU
3O8
afte
rev
apor
atin
gan
dig
nitin
gan
aliq
uot
ofth
esa
tura
ted
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Ura
nium
conc
entr
atio
n:pr
ecis
ion6
2.5%
~aut
hors!
.
Co
~1!
~2!
~3!
Va
T/
c 2 (c a E b S tr n c A Me
Iso
wi
Pr
re so ev
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
0#W
ater
;H 2
O;@
7732
-18-
5#
M.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce37
,85
6–
61~1
925!
.
riabl
es:
Pre
pare
dby
:
K:2
840
w2
/mas
s%
:3.
6–
17.6
5J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
11°C
ofU
O 2C
2O4
inH
Cls
olut
ions
a
HC
l(1
00w
2/m
ass
%)
UO
2C2O
4
(100
w1
/mas
s%
)
3.60
1.14
8.20
2.00
11.4
92.
91
14.9
94.
90
17.6
58.
82
heeq
uilib
rium
solid
phas
ew
asU
O2C
2O4•
3H2O
,@1
8860
-43-
0#,in
alls
olut
ions
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tsp
ecifi
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
614614 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
~2!
Pho
spho
ricac
id;
H 3PO
4;
@766
4-38
-2#~3
!W
ater
;H 2
O;@
7732
-18-
5#
M.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce37
,85
6–
61~1
925!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:293
100w
2/m
ass
%:
0.77
–15
.76
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
inH
3PO
4so
lutio
nsa
H3P
O4
(100
w2
/mas
s%
)U
O2C
2O4
(100
w1
/mas
s%
)
0.77
2.10
1.51
3.56
2.67
5.66
4.94
9.25
8.75
15.1
4
15.7
625
.74
a The
equi
libriu
mso
lidph
ase
was
UO
2C2O
4•3H
2O,
@188
60-4
3-9
0#,in
alls
olut
ions
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.N
othi
ngsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
~2!
~3!
Va
T/
10 a T Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
oox
alat
e;U
O 2C
2O4
;@2
031-
89-2#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Wat
er;
H 2O
;@7
732-
18-5#
K.
A.
Bol
shak
ov,
S.
S.
Kor
ovin
,V
.E
.P
lyus
hche
v,an
dT
.A
.E
rmak
ova,
Zh.
Neo
rg.
Khi
m2,
222
–8
~195
7!.
riabl
es:
Pre
pare
dby
:
K:
273
–34
30
w2
/mas
s%
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2C2O
4in
oxal
icac
idso
lutio
nsas
afu
nctio
nof
tem
pera
ture
mpe
ratu
re~°
C!
C2H
2O4
(100
w2
/mas
s%
)C
2H2O
4
(m2
/mol
kg2
1 )aU
O2C
2O4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !a
00
00.
210.
0058
8
0.74
0.08
371.
030.
0293
1.51
0.17
21.
250.
0359
2.89
0.33
51.
380.
0403
3.45
0.40
31.
400.
0411b
3.42
0.39
70.
910.
0266
3.41
0.39
40.
450.
0131
3.41
0.39
20
0
250
00.
580.
0162
0.66
0.07
481.
370.
0376
1.73
0.19
91.
800.
0521
2.58
0.30
02.
020.
0591
4.01
0.47
42.
100.
0625
7.80
0.96
42.
340.
0727
8.70
1.08
62.
340.
0735
9.70
1.12
32.
400.
0763
9.90
1.25
42.
440.
0777b
10.0
01.
267
2.33
0.07
42
10.1
21.
267
1.17
0.03
68
10.2
01.
267
0.40
0.01
25
10.1
71.
257
00
400
00.
830.
0234
0.99
0.11
31.
800.
0517
2.23
0.25
92.
220.
0649
3.91
0.46
42.
530.
0755
9.02
1.13
72.
840.
0900
12.4
01.
626
2.91
0.09
60
15.6
42.
129
2.75
0.09
41
17.2
22.
387
2.64
0.09
20b
17.4
22.
399
1.93
0.06
68
17.6
42.
412
1.14
0.03
92
17.8
02.
420
0.51
0.01
74
17.7
12.
390
00
500
01.
000.
0282
1.34
0.15
52.
350.
0681
1.90
0.22
02.
500.
0730
4.64
0.55
72.
810.
0848
6.37
0.78
13.
070.
0947
7.90
0.98
63.
100.
0973
9.72
1.24
3.14
0.10
1
10.5
61.
363.
190.
103
615615IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
~2!
Sul
furic
acid
;H 2
SO
4;
@766
4-93
-9#~3
!W
ater
;H 2
O;@
7732
-18-
5#
M.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce37
,85
6–
61~1
925!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:293
100
w2
/mas
s%
:0.
82–
29.6
7J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
inH
2SO
4so
lutio
nsa
H2S
O4
(100
w2
/mas
s%
)U
O2C
2O4
(100
w1
/mas
s%
)
0.82
0.85
2.59
1.34
3.05
1.61
5.53
2.04
15.0
73.
85
19.8
84.
93
25.5
85.
98
27.3
16.
46
29.6
77.
49
a The
equi
libriu
mso
lidph
ase
was
UO
2C2O
4•3H
2O,
@188
60-4
3-0#,
inal
lsol
utio
ns.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.N
othi
ngsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
~2!
~3!
Va
T/
10 Te
J
Isot
herm
alm
etho
dus
ed.
Mix
ture
sw
ere
stirr
edin
ath
erm
osta
ted
vess
eleq
uipp
edw
itha
hydr
aulic
seal
.T
heve
ssel
was
prot
ecte
dag
ains
tsu
nlig
htto
avoi
dre
duct
ion
ofU
O22
1to
U~I
V!.
Equ
ilibr
ium
was
reac
hed
in4
–5
days
at25
°C,
and
in10
–11
hat
70°C
.A
tte
mpe
ratu
res
abov
e25
°Csa
mpl
esof
the
satu
rate
dso
lutio
nsw
ere
with
draw
nby
usin
gpr
ehea
ted
pipe
ts.
Sat
urat
edso
lutio
nsan
dth
eso
lidph
ases
wer
ean
alyz
edfo
rox
alat
eby
dire
cttit
ratio
nw
ithst
anda
rdK
MnO 4
solu
tion,
and
for
uran
ium
~the
sam
ple
was
evap
orat
ed,
igni
ted
at60
0–
700
°Cto
deco
mpo
seth
eox
alat
e,U
3O8
was
conv
erte
dto
UO
2SO
4,an
dU
O 221
was
redu
ced
with
Cd
met
alto
U~IV
!w
hich
was
titra
ted
with
0.02
–0.
04N
KM
nO 4w
ithpo
tent
iom
etric
,en
d-po
int
dete
ctio
n!.
Com
posi
tion
ofth
eso
lidph
ases
was
also
dete
rmin
edby
Sch
rein
emak
ers
met
hod.
UO
2C2O
4w
asob
tain
edas
trih
ydra
teby
prec
ipita
tion
ofa
conc
entr
ated
UO 2~
NO
3!2
solu
tion
with
asa
tura
ted
solu
tion
ofox
alic
acid
.T
hege
latin
ous
prec
ipita
tew
asth
orou
ghly
was
hed
with
wat
eran
dai
rdr
ied
toob
tain
trih
ydra
tepo
wde
r.S
ourc
ean
dpu
rity
ofm
ater
ials
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
at0
and
25°C
,60.
1K
athi
gher
tem
pera
ture
s~aut
hors!
.U
rani
umco
ncen
trat
ion:,
60.
5%~a
utho
rs!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Sod
ium
oxal
ate;
Na 2C
2O4
;@6
2-76
-0#
Wat
er;
H 2O
;@7
732-
18-5#
A.
Col
ani,
Com
pt.
Ren
d.A
cad.
Sci
.165,
111
–3
~191
7!.
riabl
es:
Pre
pare
dby
:
K:
288;
323
0w
2/m
ass
%:
0–
4.9
and
0–
9,re
spec
tivel
yJ.
Hala
Exp
erim
enta
lDat
a
ase
diag
ram
ofth
eU
O 2C2O
4–
Na 2
C2O
4–
H2O
syst
emat
15an
d50
°C,
and
com
posi
tions
ofth
esa
tura
ted
solu
tions
atsi
gnifi
cant
ints
empe
ratu
re~°
C!
Sig
nific
ant
poin
taN
a 2C
2O4
(100
w2
/mas
s%
)N
a 2C
2O4
(m2
/mol
kg2
1 !b
UO
2C2O
4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !b
Sol
idph
asec
15a
00
0.47
0.01
32I
b0.
800.
0460
2.65
0.07
67I
1II
c1.
800.
107
5.01
0.15
0II1III
d4.
930.
298
3.14
0.09
54III1
IV
e3.
090.
177
00
IV
50A
00
1.00
0.02
82I
B1.
010.
0588
3.58
0.10
5I
1II
C3.
600.
231
9.84
0.31
7II1V
D4.
620.
309
12.3
30.
414
V1III
E9.
030.
649
13.6
90.
495
III1IV
F4.
280.
248
00
IV
eeF
ig.
13al
cula
ted
byco
mpi
ler.
!U
O2C
2O4•
3H2O
,@1
8860
-43-
0#;~I
I!N
a 2~U
O2!
4~C
2O4!
5•11
H2O
,@
#;~I
II!
Na 2
UO
2~C
2O4!
2•5H
2O,
@#;
~IV
!N
a 2C
2O4
;@6
2-76
-;
~V!
Na 2
~UO
2!2~
C2O
4!3•
5H2O
,@
#.
ase
diag
ram~
Fig
.13
!of
the
UO 2
C2O
4–
Na 2
C2O
4–
H2O
syst
emat
15an
d50
°C.
616616 JIRI HALA
11.5
01.
503.
220.
105
13.4
51.
793.
070.
103
15.2
92.
082.
870.
0979
18.5
32.
622.
790.
0990
23.4
03.
512.
510.
0946
23.7
03.
567
2.50
0.09
46b
23.7
23.
566
2.40
0.09
07
23.8
53.
581
2.18
0.08
23
24.0
3.56
31.
190.
0444
23.9
53.
500
0
70c
00
1.60
0.04
54
1.03
0.11
92.
670.
0774
1.82
0.21
22.
930.
0859
2.63
0.31
13.
400.
101
2.92
0.34
83.
760.
113
5.23
0.63
93.
840.
118
7.52
0.94
33.
960.
125
10.7
21.
404.
120.
135
11.9
41.
584.
130.
137
13.5
11.
824.
020.
136
14.6
21.
993.
980.
137
16.9
12.
373.
930.
131
22.1
93.
313.
300.
124
27.7
84.
442.
680.
108
29.9
64.
922.
360.
0974
36.6
86.
611.
640.
0743
37.8
66.
951.
660.
0766
37.9
26.
941.
400.
0644
38.2
46.
980.
880.
0404
37.9
26.
780
0
a Cal
cula
ted
byco
mpi
ler.
b Tw
oso
lidph
ases
,i.e
.,U
O 2C2O
4•3H
2O,
@188
60-4
3-0#
~A!
and
C 2H
2O4•
2H2O
,@6
153-
56-6#
~B!,
wer
ein
equi
libriu
mw
ithth
isso
lutio
n.In
solu
tions
cont
aini
nglo
wer
and
high
erox
alic
acid
conc
entr
atio
ns,
the
equi
libriu
mso
lidph
ases
wer
eA
and
B,
resp
ectiv
ely.
c For
mea
sure
men
tsat
this
tem
pera
ture
the
solid
phas
esw
ere
not
repo
rted
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Co
~1!
~2!
~3!
Va
T/
10 Ph
po T a S b C c ~I 0# Ph
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
No
deta
ilsre
port
ed.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Am
mon
ium
oxal
ate;
(NH 4!
2C2O
4;
@111
3-38
-8#W
ater
;H 2
O;
@773
2-18
-5#
A.
Col
ani,
Com
pt.
Ren
d.A
cad.
Sci
.165,
234
–6
~191
7!.
riabl
es:
Pre
pare
dby
:
K:
288;
323
0w
2/m
ass
%:
0–
6.4
and
0–
15.9
,re
spec
tivel
yJ.
Hala
Exp
erim
enta
lDat
a
ase
diag
ram
ofth
eU
O 2C2O
4–
~NH
4!2C
2O4–
H2O
syst
emat
15an
d50
°C,
and
com
posi
tions
ofth
esa
tura
ted
solu
tions
atsi
gnifi
cant
ints
empe
ratu
re~°
C!
Sig
nific
ant
poin
ta~N
H4!
2C2O
4
(100
w2
/mas
s%
)~N
H4!
2C2O
4
(m2
/mol
kg2
1 )bU
O2C
2O4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 )bS
olid
phas
ec
15a
00
0.47
0.01
32I
b2.
140.
190
7.19
0.22
1I
1II
c2.
990.
273
8.78
0.22
8II1III
d6.
430.
618
9.66
0.32
2III1
IV
e3.
690.
309
00
IV
50A
00
1.00
0.02
82I
B1.
360.
110
5.11
0.15
3I
1V
C8.
520.
959
19.8
90.
776
V1V
I
D15
.90
2.16
23.8
21.
10V
I1
IV
E9.
360.
832
00
IV
eeF
ig.
14al
cula
ted
byco
mpi
ler.
!U
O2C
2O4•
3H2O
,@1
8860
-43-
0#;~I
I!~N
H4!
2~U
O2!
2~C
2O4!
3•3H
2O,
@#;
~III
!~N
H4!
2UO
2~C
2O4!
2•2H
2O,
@#;
~IV
!H
4!2C
2O4•
H2O
,@
#;~V
!~N
H4!
2~U
O2!
2~C
2O4!
3,@
#;~V
I!~N
H4!
2UO
2~C
2O4!
2,@
#.
ditio
nali
nfor
mat
ion:
75°C
,~N
H4!
4UO
2~C
2O4!
3,@
#,w
asid
entifi
edas
the
solid
phas
ein
solu
tions
cont
aini
ng18
.70
and
21.1
7m
ass
%~N
H4!
2C2O
4.
ase
diag
ram~
Fig
.14
!of
the
UO 2
C2O
4–
~NH
4!2C
2O4–
H2O
syst
emat
15an
d50
°C.
617617IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.13
.U
rani
um~V
I!di
oxoo
xala
te–
amm
oniu
mox
alat
e–
wat
ersy
stem
.
Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
Va
T/
10 Ph
po T a S b C c ~I ~N Ad
At
Ph
J
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
No
deta
ilsre
port
ed.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Pot
assi
umox
alat
e;K 2C
2O4
;@5
83-5
2-8#
Wat
er;
H 2O
;@7
732-
18-5#
A.
Col
ani,
Com
pt.
Ren
d.A
cad.
Sci
.163,
123
–5
~191
6!.
riabl
es:
Pre
pare
dby
:
K:
288;
323
0w
2/m
ass
%:
0–
24.3
and
0–
32.7
5,re
spec
tivel
yJ.
Hala
Exp
erim
enta
lDat
a
ase
diag
ram
ofth
eU
O 2C2O
4–
K2C
2O4–
H2O
syst
emat
15an
d50
°C,
and
com
posi
tions
ofth
esa
tura
ted
solu
tions
atsi
gnifi
cant
ints
mpe
ratu
re~°
C!
Sig
nific
ant
poin
taK
2C2O
4
(100
w2
/mas
s%
)K
2C2O
4
(m2
/mol
kg2
1 !b
UO
2C2O
4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !b
Sol
idph
asec
15a
00
0.47
0.01
32I
b0.
420.
0257
1.34
0.03
81I
1II
c1.
830.
117
3.89
0.11
5II1III
d1.
850.
118
3.76
0.11
1III1
IV
e24
.30
1.94
0.10
0.00
368
IV1V
f24
.09
1.91
00
V
50A
00
1.00
0.02
82I
B1.
110.
0700
3.45
0.10
1I
1II
C4.
830.
340
9.82
0.32
1II1III
D5.
610.
398
9.52
0.31
4III1
IV
E32
.65
2.97
1.22
0.05
15IV1
V
F32
.75
2.93
00
V
eeF
ig.
15.
alcu
late
dby
com
pile
r.!
UO
2C2O
4•3H
2O,@
1886
0-43
-0#;~
II!
K2~
UO
2!2~
C2O
4!3•
4H2O
,@#;
~III
!K
2UO
2~C
2O4!
2•3.
5H2O
,@#;
~IV
!K
6~U
O2!
2~C
2O4!
5•10
H2O
,@#;
!K
2C2O
4•H
2O,
@648
7-48
-5#.
ase
diag
ram~
Fig
.15
!of
the
UO 2
C2O
4–
K2C
2O4–
H2O
syst
emat
15an
d50
°C.
FIG
.15
.S
odiu
mca
rbon
ato
diox
onep
tuna
te~V!–
sodi
umpe
rchl
orat
e–
carb
ondi
oxid
e–
wat
ersy
stem
.
618618 JIRI HALA
FIG
.14
.U
rani
um~V
I!di
oxoo
xala
te–
pota
ssiu
mox
alat
e–
wat
ersy
stem
.
Co
~1!
~2!
~3!
Va
T/
10 Ph
po Te
a S b C c ~I ~V Ph
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Cal
cium
oxal
ate;
CaC 2
O4
;@5
63-7
2-4#
Wat
er;
H 2O
;@7
732-
18-5#
A.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce1,
1376
–9
~193
4!;
Com
pt.
Ren
d.A
cad.
Sci
.198,
1510
–2~
1934
!.
riabl
es:
Pre
pare
dby
:
K:
288;
323
0w2
/mas
s%
:0
–0.
079
and
0–
0.04
4,re
spec
tivel
yJ.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofth
esa
tura
ted
solu
tions
inth
eU
O2C
2O4–
CaC
2O4–
H2O
syst
emat
15an
d50
°C
mpe
ratu
re~°
C!
CaC
2O4
(100
w2
/mas
s%
)C
aC2O
4
(103
m2
/mol
kg2
1 !a
UO
2C2O
4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !a
Sol
idph
aseb
150
00.
470
0.01
32A
0.01
20.
941
0.46
90.
0132
A1B
0.01
10.
861
0.26
00.
0072
8B
0.07
96.
180.
137
0.00
383
B
0.07
55.
860.
088
0.00
246
B
500
01.
000.
0282
A
0.02
21.
740.
996
0.02
81A
0.04
43.
471.
070.
0302
A1B
0.03
83.
001.
040.
0294
B
0.03
72.
920.
924
0.02
61B
0.01
71.
330.
239
0.00
669
B
alcu
late
dby
com
pile
r.!
UO
2C2O
4•3H
2O,
@188
60-4
3-0#;
~B!
CaC
2O4•
H2O
,@5
794-
28-5#
.
ditio
nali
nfor
mat
ion:
roug
hsk
etch
only
was
give
nfo
rth
eph
ase
diag
ram
ofth
eU
O2C
2O4–
CaC
2O4–
H2O
syst
em.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
oa
give
nvo
lum
eof
wat
er,
the
sire
dqu
antit
ies
ofU
O 2C2O
4an
dC
aC2O
4w
ere
adde
d.T
hext
ures
wer
eag
itate
dun
tileq
uilib
rium
was
reac
hed.
Thi
sto
oka
long
,th
ough
unsp
ecifi
edpe
riod
oftim
e.T
hen
the
clea
rsu
pern
atan
tso
lutio
nw
asan
alyz
edgr
avim
etric
ally
~met
hods
not
spec
ified
!.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
619619IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
No
deta
ilsre
port
ed.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Co
~1!
~2!
~3!
Va
T/
10 Te
a C b ~A Ad
A Me
Iso
de mi
J
Cal
cula
ted
byco
mpi
ler.
b ~A!
UO
2C2O
4•3H
2O,
@188
60-4
3-0#;
~B!
SrU
O2~
C2O
4!2•
4H2O
,@
#;~C
!S
rC2O
4•4H
2O,
@#,
inor
igin
alre
fere
nce,1
orS
rC2O
4•2.
5H2O
,@
#,in
orig
inal
refe
renc
es.2
Add
ition
alin
form
atio
n:A
roug
hsk
etch
ofth
eph
ase
diag
ram
ofth
eU
O2C
2O4–
SrC
2O4–
H2O
syst
emw
asre
port
ed.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
To
agi
ven
volu
me
ofw
ater
,th
ede
sire
dqu
antit
ies
ofU
O 2C2O
4an
dS
rC2O
4w
ere
adde
d.T
hem
ixtu
res
wer
eag
itate
dun
tileq
uilib
rium
was
reac
hed.
Thi
sto
oka
long
,th
ough
unsp
ecifi
edpe
riod
oftim
e.T
hen
the
clea
rsu
pern
atan
tso
lutio
nw
asan
alyz
edgr
avim
etric
ally
~met
hods
not
spec
ified
!.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Bar
ium
oxal
ate;
BaC
2O4
;@5
16-0
2-9#
Wat
er;
H 2O
;@7
732-
18-5#
A.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce1,
1376
–9~
1934
!.
riabl
es:
Pre
pare
dby
:
K:
288;
323
0w
2/m
ass
%:
0–
0.07
7an
d0
–0.
37,
resp
ectiv
ely
J.H
ala
Exp
erim
enta
lDat
aC
ompo
sitio
nof
the
satu
rate
dso
lutio
nsin
the
UO
2C2O
4–
BaC
2O4–
H2O
syst
emat
15an
d50
°C
mpe
ratu
re~°
C!
BaC
2O4
(100
w2
/mas
s%
)B
aC2O
4
(104
m2
/mol
kg2
1 !a
UO
2C2O
4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !a
Sol
idph
aseb
150
00.
470
0.01
32A
0.01
376.
110.
453
0.01
27A
0.02
5211
.20.
460
0.01
29A
0.07
7234
.50.
563
0.01
58B
0.07
0631
.50.
525
0.01
48B
0.06
4028
.50.
422
0.01
18B
0.06
0026
.70.
166
0.00
465
B0.
0592
c26
.30.
140
0.00
392
B0.
0479
21.3
0.07
770.
0021
7C
0.03
5315
.70.
0548
0.00
153
C0.
0306
13.6
0.04
490.
0012
6C
0.03
1514
.00.
0432
0.00
122
D0.
0209
9.28
0.02
210.
0006
17D
500
01.
000.
0282
A0.
193
86.9
1.30
0.03
66A
0.34
315
51.
580.
0450
A0.
370
167
1.62
0.04
62A1
B0.
354
160
1.54
0.04
38B
0.31
514
20.
911
0.02
58B
0.25
111
20.
648
0.01
93B
0.21
194
.30.
443
0.01
25B1C
0.18
683
.00.
368
0.01
03C
0.13
057
.80.
239
0.00
669
C1E
0.10
245
.40.
166
0.00
465
E0.
0366
16.3
0.04
610.
0012
9E
a Cal
cula
ted
byco
mpi
ler.
b ~A!
UO
2C2O
4•3H
2O,@
1886
0-43
-0#;~
B!
BaU
O2~
C2O
4!2•
5H2O
,@#;
~C!
Ba 2
UO
2~C
2O4!
3•7H
2O,@
#,~D
!B
aC2O
4•2H
2O,@
1858
1-91
-4#;~
E!
BaC
2O4•
0.5H
2O,
@185
81-8
9-0#.
c InR
ef.
1,th
isco
mpo
sitio
nis
repo
rted
tobe
that
ofth
eeu
toni
cpo
int
with
solid
phas
esB
and
Cat
equi
libriu
m.
Als
o,co
mpo
sitio
nof
two
mor
eeu
toni
cpo
ints
isre
port
edw
hich
dono
tag
ree
with
the
data
repo
rted
inth
isco
mpi
led
docu
men
t.
Add
ition
alin
form
atio
n:A
roug
hsk
etch
ofth
eph
ase
diag
ram
ofth
eU
O2C
2O4–
BaC
2O4–
H2O
syst
emw
asre
port
ed.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
To
agi
ven
volu
me
ofw
ater
,th
ede
sire
dqu
antit
ies
ofU
O 2C2O
4an
dB
aC2O
4w
ere
adde
d.T
hem
ixtu
res
wer
eag
itate
dun
tileq
uilib
rium
was
reac
hed.
Thi
sto
oka
long
,th
ough
unsp
ecifi
edpe
riod
oftim
e.T
hen
the
clea
rsu
pern
atan
tso
lutio
nw
asan
alyz
edgr
avim
etric
ally
~met
hods
not
spec
ified
!.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tsp
ecifi
ed.
Sol
ubili
tyda
ta:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 A.
Col
ani,
Com
pt.
Ren
d.198
,15
10~1
934!
.
620620 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
~2!
Str
ontiu
mox
alat
e;S
rC 2O
4;
@814
-95-
9#~3
!W
ater
;H 2
O;
@773
2-18
-5#
1 A.
Col
ani,
Bul
l.S
oc.
Chi
m.
Fra
nce1,
1376
–9~
1934
!;2 A
Col
ani,
Com
pt.
Ren
d.A
cad.
Sci
.198,
1510
–2~
1934
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:28
8;32
310
0w
2/m
ass
%:
0–
0.16
and
0–
0.52
,re
spec
tivel
yJ.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofth
esa
tura
ted
solu
tions
inth
eU
O2C
2O4–
SrC
2O4–
H2O
syst
emat
15an
d50
°C
Tem
pera
ture
~°C
!S
rC2O
4
(100
w2
/mas
s%
)S
rC2O
4
(103
m2
/mol
kg2
1 !a
UO
2C2O
4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !a
Sol
idph
aseb
150
00.
470
0.01
32A
0.09
35.
330.
616
0.01
73A
0.16
49.
420.
711
0.02
00A1B
0.15
89.
070.
742
0.02
09B
0.16
09.
190.
701
0.01
97B
0.16
39.
350.
549
0.01
54B1C
0.14
78.
420.
481
0.01
35C
0.08
64.
910.
266
0.00
746
C
0.03
31.
880.
087
0.00
243
C
500
01.
000.
0282
A
0.12
16.
981.
230.
0348
A
0.34
319
.91.
750.
0499
A
0.41
224
.01.
920.
0549
A
0.52
130
.52.
100.
0602
A1B
0.50
829
.71.
990.
0570
B
0.50
029
.11.
820.
0520
B
0.47
727
.71.
450.
0413
B1C
0.43
525
.11.
320.
0373
C
0.18
910
.80.
524
0.01
47C
0.12
87.
320.
349
0.00
979
C
0.07
44.
220.
176
0.00
493
C
a
Co
~1!
~2!
~3!
Va
T/
10 Te
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
asst
irred
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.P
relim
inar
yex
perim
ents
show
edth
atth
isw
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.C
once
ntra
tion
ofur
aniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
grav
imet
rical
lyas
U3O
8af
ter
evap
orat
ing
and
igni
ting
anal
iquo
tof
the
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Con
cent
ratio
nof
uran
ium
:62.
5%~a
utho
rs!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
08–
0.63
for
0.5
and
2.0
mol
dm23
HN
O3
;8
–0.
47fo
r3.
0m
oldm
23
HN
O3
/mol
dm2
3 :0.
5;2.
0;3.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
ty20
°Cof
UO 2
C2O
4in
C2H
2O4–
HN
O3
solu
tions
a
HN
O3
3/m
oldm
23 )
C2H
2O4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
HN
O3
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
0.5
0.08
01.
833.
00.
080
2.91
0.15
82.
070.
158
2.08
0.23
82.
280.
237
1.50
0.31
82.
430.
318
1.29
0.47
62.
680.
394
1.12
0.63
62.
980.
476
1.07
2.0
0.08
02.
48
0.15
81.
92
0.23
71.
66
0.31
61.
50
0.47
61.
30
0.63
61.
32
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
ditio
nali
nfor
mat
ion:
omth
ein
crea
sing
solu
bilit
yof
UO 2C
2O4
with
incr
easi
ngox
alic
acid
conc
entr
atio
nin
0.5
mol
dm23
HC
lO4,
the
auth
ors
calc
ulat
edbi
lity
cons
tant
sof
the
UO 2C
2O4
and
UO 2
~C2O
4!22
2co
mpl
exes
.In
2.0
and
3.0
mol
dm23
HC
lO4,
the
decr
easi
ngso
lubi
lity
ofU
O 2C2O
4
thin
crea
sing
oxal
icac
idco
ncen
trat
ion
was
take
nas
anev
iden
cefo
rth
eab
senc
eof
com
plex
form
atio
nbe
twee
nU
O221
and
C 2O
422io
nsth
ese
solu
tions
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
asst
irred
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.P
relim
inar
yex
perim
ents
show
edth
atth
isw
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.C
once
ntra
tion
ofur
aniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
grav
imet
rical
lyas
U3O
8af
ter
evap
orat
ing
and
igni
ting
anal
iquo
tof
the
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Con
cent
ratio
nof
uran
ium
:62.
5%~a
utho
rs!.
621621IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
~2!
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
~3!
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#~4
!W
ater
;H 2
O;
@773
2-18
-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.
08–
0.63
7c 3
/mol
dm2
3 :0.
5an
d1.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
inC
2H2O
4–
HC
lO4
solu
tions
a
HC
lO4
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
0.5
0.08
01.
63
0.15
91.
71
0.23
81.
88
0.31
82.
14
0.47
62.
32
0.63
62.
56
1.0
0.08
01.
65
0.15
81.
59
0.31
61.
35
0.47
61.
29
0.63
61.
16
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.
Add
ition
alin
form
atio
n:F
rom
the
incr
easi
ngso
lubi
lity
ofU
O 2C2O
4w
ithin
crea
sing
oxal
icac
idco
ncen
trat
ion
in0.
5m
oldm23
HC
lO4,
the
auth
ors
calc
ulat
edst
abili
tyco
nsta
nts
ofth
eU
O 2C2O
4an
dU
O 2~C
2O4!
222
com
plex
es.
In1.
0m
oldm2
3H
ClO
4,th
ede
crea
sing
solu
bilit
yof
UO 2C
2O4
with
incr
easi
ngox
alic
acid
conc
entr
atio
nw
asta
ken
asan
evid
ence
for
the
abse
nce
ofco
mpl
exfo
rmat
ion
betw
een
UO
221an
dC 2
O422
ion
inth
ese
solu
tions
.S
olid
phas
esw
ere
not
inve
stig
ated
. Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 0.0
c 3 (c a E Ad
Fr
sta
wi
in
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
Am
mon
ium
oxal
ate;
~NH
4!2C
2O4
;@1
113-
38-8#
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#W
ater
;H 2
O;
@773
2-18
-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
07–
0.28
/mol
dm2
3 :0.
5,1.
0,an
d3.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
in~N
H4!
2C2O
4–
HC
lO4
solu
tions
a
HC
lO4
3/m
oldm
23 )
~NH
4!2C
2O4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
HC
lO4
(c3
/mol
dm2
3 )~N
H4!
2C2O
4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
0.5
0.07
01.
963.
00.
070
1.16
0.10
52.
430.
140
1.13
0.14
03.
210.
175
0.96
0
0.17
04.
260.
210
0.87
8
0.21
05.
910.
245
0.78
0
0.24
57.
500.
280
0.75
9
0.28
09.
09
1.0
0.07
01.
54
0.10
51.
56
0.14
01.
60
0.17
01.
70
0.21
02.
00
0.24
52.
36
0.28
02.
65
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
ditio
nali
nfor
mat
ion:
crea
sing
solu
bilit
yof
UO 2C
2O4
with
incr
easi
ngam
mon
ium
oxal
ate
in3.
0m
oldm2
3H
ClO
4so
lutio
nsco
ncen
trat
ion
was
take
nas
anid
ence
for
the
abse
nce
ofco
mpl
exfo
rmat
ion
betw
een
UO
221an
dC 2
O422
ions
inth
ese
solu
tions
.S
olid
phas
esw
ere
not
inve
stig
ated
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
asst
irred
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.P
relim
inar
yex
perim
ents
show
edth
atth
isw
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.C
once
ntra
tion
ofur
aniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
grav
imet
rical
lyas
U3O
8af
ter
evap
orat
ing
and
igni
ting
anal
iquo
tof
the
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Con
cent
ratio
nof
uran
ium
:62.
5%~a
utho
rs!.
622622 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4
;@2
031-
89-2#
~2!
Am
mon
ium
oxal
ate;
~NH
4!2C
2O4
;@1
113-
38-8#
~3!
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
A.I
.Mos
kvin
and
E.A
.Zak
haro
va,Z
h.N
eorg
.Khi
m.
4,21
51–
60~1
959!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.
07–
0.28
c 3/m
oldm
23 :
0.5
and
1.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofU
O 2C
2O4
in~N
H4!
2C2O
4–
HN
O3
solu
tions
a
HN
O3
(c3
/mol
dm2
3 )~N
H4!
2C2O
4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
HN
O3
(c3
/mol
dm2
3 )~N
H4!
2C2O
4
(c2
/mol
dm2
3 )U
O2C
2O4
(102
c 1/m
oldm
23 )
0.5
0.07
02.
121.
00.
070
2.09
0.10
52.
610.
105
2.13
0.14
03.
480.
140
2.18
0.17
04.
440.
170
2.37
0.21
06.
120.
210
2.70
0.24
57.
870.
245
2.78
0.28
09.
710.
280
3.18
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
UO
2C2O
4•3H
2Ow
asst
irred
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r6
h.P
relim
inar
yex
perim
ents
show
edth
atth
isw
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.C
once
ntra
tion
ofur
aniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
grav
imet
rical
lyas
U3O
8af
ter
evap
orat
ing
and
igni
ting
anal
iquo
tof
the
solu
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Con
cent
ratio
nof
uran
ium
:62.
5%~a
utho
rs!.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 (c a E Ad
De
ev
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
wer
eeq
uilib
rate
dfo
r3
–6
days
.T
hetim
ene
cess
ary
for
reac
hing
equi
libriu
min
crea
sed
with
incr
easi
ngco
ncen
trat
ion
ofU
O2~
NO
3!.
The
vess
els
used
wer
epr
otec
ted
from
light
topr
even
tth
efo
rmat
ion
ofba
sic
oxal
ates
ofU
~IV
!.S
atur
ated
solu
tions
wer
ean
alyz
edfo
rur
aniu
m,
oxal
ate,
and
nitr
ate.
Ura
nium
and
oxal
ate
wer
ede
term
ined
bytit
ratio
nw
ithK
MnO
4so
lutio
n,ni
trat
ew
asde
term
ined
byth
eK
jeld
ahl
met
hod
afte
rre
duci
ngN
O 32w
ithD
ewar
dal
loy.
Com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asde
term
ined
byth
em
etho
dof
indi
ffere
ntco
mpo
nent
(NO 32
),in
som
eca
ses
also
bych
emic
alan
alys
isan
dop
tical
mic
rosc
opy.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
oox
alat
e;U
O 2C
2O4;
@203
1-89
-2#U
rani
um~V
I!di
oxo
dini
trat
e;U
O 2~N
O3!
2;@1
0102
-06-
04#
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#N
itric
acid
;H
NO
3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
K.
A.
Bol
shak
ovan
dS
.S
.K
orov
in,
Zh.
Neo
rg.
Khi
m.
2,19
40–
50~1
957!
.
riabl
es:
Pre
pare
dby
:
K:
298
mpo
sitio
nJ.
Hala
Exp
erim
enta
lDat
a
ompo
sitio
nof
solu
tions
satu
rate
dat
25°C
,an
dco
rres
pond
ing
tose
lect
edse
ctio
nsof
the
quar
tern
ary
syst
emU
O221
,H1
i C2O
422,N
O32
UO
2~N
O3!
2
(100
w2
mas
s%
)
HN
O3
(100
w4
mas
s%
)
UO
2C2O
4
(100
w1
mas
s%
)S
olid
phas
ef
HN
O3
(100
w4
mas
s%
)
UO
2~N
O3!
2
(100
w2
mas
s%
)
UO
2C2O
4
(100
w1
mas
s%
)S
olid
phas
ef
47.5
0a6.
060
A22
.22c
26.5
20.
47B
47.1
06.
000.
43A1
B22
.31
23.3
80.
42B
39.9
05.
110.
38B
23.5
618
.73
0.40
B
28.3
13.
550.
46B
22.4
216
.01
0.41
B
21.2
1—
0.54
B22
.37
10.2
30.
48B
14.4
2—
0.57
B22
.60
5.46
0.70
B
7.58
—0.
53B
22.5
11.
811.
26B
42.9
3a11
.16
0A
41.0
610
.66
0.46
A1B
C2H
2O4
HN
O3
UO
2C2O
4S
olid
phas
ef
40.1
310
.35
0.44
B~1
00w
3~1
00w
4~1
00w
1
35.2
89.
150.
37B
mas
s%!
mas
s%!
mas
s%!
31.9
7—
0.43
B
22.8
0—
0.47
B1.
73d0
1.80
B
14.9
0—
0.55
B1.
742.
170.
94B
8.83
—0.
57B
1.72
9.00
0.64
B
8.83
—0.
57B
1.73
11.8
70.
62B
8.83
—0.
57B
1.69
27.1
60.
97B
1.68
31.0
11.
29B
31.9
6a23
.08
0A
1.68
35.5
01.
45B
31.4
422
.66
0.83
A1B
1.52
39.8
61.
82B
31.0
621
.05
0.55
B1.
5145
.30
2.28
B
27.0
617
.70
0.38
B1.
7546
.12
2.58
B
22.3
113
.93
0.37
B1.
7447
.02
2.93
B1
D
17.4
4—
0.42
B1.
5050
.55
2.60
D
16.6
310
.94
0.44
B1.
5164
.57
1.36
D
10.6
2—
0.47
B
6.27
—0.
55B
623623IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
ooxa
late
;U
O 2C
2O4;
@203
1-89
-2#~2
!U
rani
um~V
I!di
oxo
dini
trat
e;U
O 2~N
O3!
2;@1
0102
-06-
4#~3
!W
ater
;H 2
O;
@773
2-18
-5#
K.
A.
Bol
shak
ovan
dS
.S
.K
orov
in,
Zh.
Neo
rg.
Khi
m.
2,19
40–
50~1
957!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
810
0w
2/m
ass
%:
0–
56.2
3J.
Hala
Exp
erim
enta
lDat
a
Com
posi
tion
ofso
lutio
nssa
tura
ted
at25
°C
UO
2~N
O3!
2
(100
w2
/mas
s%
)U
O2~
NO
3!(m
2/m
olkg
21 !
aU
O2C
2O4
(100
w1
/mas
s%
)U
O2C
2O4
(m1
/mol
kg2
1 !a
Sol
idph
aseb
00
0.58
0.01
63A
1.26
0.03
260.
580.
0165
A
5.18
0.14
00.
600.
0178
A
9.55
0.27
00.
630.
0196
A
12.6
60.
371
0.63
0.02
03A
18.7
60.
591
0.62
0.02
15A
20.4
00.
655
0.60
0.02
12A
23.6
40.
792
0.58
0.02
14A
31.0
31.
150.
540.
0220
A
43.3
91.
960.
440.
0219
A
51.7
82.
750.
350.
0204
A
55.5
03.
190.
310.
0196
A1B
55.8
53.
230.
260.
0166
B
56.0
03.
240.
120.
0076
4B
56.2
33.
260
0B
a Cal
cula
ted
byco
mpi
ler.
b ~A!
UO
2C2O
4•3H
2O,
@188
60-4
3-0#;
~B!
UO
2~N
O3!
2•6H
2O,
@135
20-8
3-7#.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Mix
ture
sof
the
desi
red
com
posi
tions
Not
hing
spec
ified
.
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
co C
J
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Mix
ture
sof
the
desi
red
com
posi
tion
wer
eeq
uilib
rate
dfo
r3
–6
days
.T
hetim
ene
cess
ary
for
reac
hing
equi
libriu
min
crea
sed
with
incr
easi
ngco
ncen
trat
ion
ofU
O2~
NO
3!2.
The
vess
els
used
wer
epr
otec
ted
from
light
topr
even
tth
efo
rmat
ion
ofba
sic
U~IV
!ox
alat
es.
Sat
urat
edso
lutio
nsw
ere
anal
yzed
for
uran
ium
,ox
alat
e,an
dni
trat
e.U
rani
uman
dox
alat
ew
ere
dete
rmin
edby
titra
tion
with
KM
nO4
solu
tion,
nitr
ate
was
dete
rmin
edby
the
Kje
ldah
lm
etho
daf
ter
redu
cing
NO 32
with
Dew
ard
allo
y.C
ompo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
dete
rmin
edby
the
met
hod
ofin
diffe
rent
com
pone
nt(N
O 32),
inso
me
case
sal
soby
chem
ical
anal
ysis
and
optic
alm
icro
scop
y.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
5.11
.7.
Ura
nium
„V
I…D
ioxo
„ox
alat
e…
N,N
8-D
imet
hylF
orm
amid
eM
onos
olva
te
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
oox
alat
eN
,N 8
-dim
ethy
lfor
mam
ide
noso
lvat
e;U
O 2C2O
4•C
3H7N
O;
@838
35-4
9-8#
N,
N8-
dim
ethy
lfor
mam
ide;
C 3H7N
O;
@68-
12-2
#N
itric
acid
;H
NO
3;
@769
7-37
-2#O
xalic
acid
;C 2
H2O
4;
@144
-62-
7#W
ater
;H 2
O;
@773
2-18
-5#
D.
N.
Byk
hovs
kii,
M.
A.
Kuz
min
a,an
dG
.I.
Pet
rzha
k,R
adio
khim
iya2
5,45
–7
~198
3!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0
–5.
0/m
oldm
23 :
1.0
/mol
dm2
3 :0.
15
J.H
ala
Exp
erim
enta
lDat
a
lubi
lity
ofU
O2C
2O4•
C3H
7NO
at25
°Cin
solu
tions
cont
aini
ng1.
0m
oldm2
3H
NO
3an
d0.
15m
oldm
23
oxal
icac
idas
afu
nctio
nof
H7N
Oco
ncen
trat
iona
C3H
7NO
(c2
/mol
dm2
3 )U
O2C
2O4•
C3H
7NO
(103
c 1/m
oldm
23 )
C3H
7NO
(c2
/mol
dm2
3 )U
O2C
2O4•
C3H
7NO
(103
c 1/m
oldm
23 )
015
.76
0.7
1.5
0.30
60.
01
0.10
2.35
60.
212.
00.
306
0.01
0.25
1.15
60.
073.
00.
306
0.02
0.50
0.58
60.
014.
00.
336
0.01
0.75
0.45
60.
025.
00.
416
0.02
1.0
0.37
60.
02
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
ditio
nali
nfor
mat
ion:
sore
port
edw
as,
ingr
aphi
cal
form
,so
lubi
lity
ofU
O2C
2O4•
C3H
7NO
asa
func
tion
ofox
alic
acid
conc
entr
atio
n,in
mol
dm2
3H
NO
3/0
.5m
oldm
23
C3H
7NO
or1.
0m
oldm
23
HN
O3/2
.0m
oldm
23
C3H
7NO
solu
tions
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sso
lidw
aseq
uilib
rate
dw
ithlu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r30
hw
hile
equi
libriu
mw
asat
tain
edaf
ter
6h.
Con
cent
ratio
nof
uran
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edsp
ectr
opho
tom
etric
ally
with
arse
nazo
III.
1
The
UO 2
C2O
4•C
3H7N
Oco
mpl
exw
aspr
epar
edby
prec
ipita
tion
with
0.8
mol
dm2
3ox
alic
acid
ofa
solu
tion
whi
chw
as0.
1m
oldm
23
inur
aniu
man
d0.
6m
oldm
23
inC
3H7N
O.2
The
crys
talli
neso
lidw
asw
ashe
dw
ithw
ater
,et
hano
land
ethe
r,an
dw
asch
arac
teriz
edby
chem
ical
anal
ysis
and
x-ra
ydi
ffrac
tion.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:se
eau
thor
s’da
taab
ove.
Ref
eren
ces:
1 S.
A.
Nik
itina
,A
.A
.Li
povs
kii,
and
T.
A.
Dem
yano
va,
Rad
iokh
imiy
a20,
900
~197
8!.
2 D.
N.
Byk
hovs
kii,
M.
A.
Kuz
min
a,L.
V.
Sol
ncev
,an
dA
.G
.T
utov
,R
adio
khim
iya2
4,46
8~1
982!
.
624624 JIRI HALA
C2H
2O4
(100
w3
mas
s%!
HN
O3
(100
w4
mas
s%!
UO
2C2O
4
(100
w1
mas
s%!
Sol
idph
asef
C2H
2O4
(100
w3
mas
s%!
HN
O3
(100
w4
mas
s%!
UO
2C2O
4
(100
w1
mas
s%!
Sol
idph
asef
9.30
b2.
170
C9.
90e
02.
44B1
C
8.98
2.17
1.31
C1B
8.98
2.17
1.51
B1C
8.33
—1.
68B
7.81
5.10
0.78
B1C
7.05
1.33
1.80
B7.
326.
470.
61B
1C
6.14
1.25
1.67
B6.
659.
090.
49B
1C
4.45
—1.
98B
6.58
10.5
20.
40B1C
1.06
—1.
35B
5.99
13.8
90.
38B1C
4.63
21.5
40.
35B1
C
8.34
b5.
320
C4.
1326
.25
0.41
B1C
7.81
5.10
0.78
C1B
3.43
35.5
30.
66B1
C
6.97
4.62
1.31
B3.
4739
.15
0.89
B1
C
4.22
2.67
1.22
B3.
3445
.74
1.94
B1
C
2.04
—1.
32B
3.28
47.0
42.
14B1C
1D
1.19
—1.
24B
3.22
51.4
71.
86B1D
0.73
—1.
21B
4.26
62.3
01.
30B1D
7.02
b9.
520
C
6.65
9.09
0.49
C1B
6.48
8.60
0.73
B
4.59
5.68
0.72
B
2.30
—0.
80B
1.74
2.17
0.94
B
1.08
—0.
90B
a Sec
tion
with
cons
tant
ratio
ofU
O 2~N
O3!
2an
dH
NO 3
conc
entr
atio
ns.
b Sec
tion
with
cons
tant
ratio
ofC 2H
2O4
and
HN
O 3co
ncen
trat
ions
.c S
ectio
nw
ithco
nsta
ntH
NO 3
conc
entr
atio
n.d S
ectio
nw
ithco
nsta
ntC 2H
2O4
conc
entr
atio
n.e E
uton
icpo
ints
for
UO 2
C2O
4an
dC 2
H2O
4.f ~A
!U
O2~
NO
3!2•
6H2O
,@1
3520
-83-
7#;~B
!U
O2C
2O4•
3H2O
,@1
8860
-43-
0#;~C
!C
2H2O
4•2H
2O,
@615
3-56
-6#;
~D!
UO
2C2O
4•H
2O,
@#.
Add
ition
alin
form
atio
n:In
solu
tions
cont
aini
ng.
25m
ass
%U
O 2~N
O3!
2an
d.
30m
ass
%H
NO 3
,U
O2C
2O4
show
eda
tend
ency
tow
ard
form
atio
nof
supe
rsat
u-ra
ted
solu
tions
.Thu
sfo
r28
.95
mas
s%
UO
2~N
O3!
2an
d38
.45
mas
s%
HN
O 3,th
eco
ncen
trat
ion
ofU
O 2C2O
4re
ache
d8.
23m
ass
%,w
hile
the
corr
espo
ndin
geq
uilib
rium
solu
bilit
yw
ason
ly2.
72m
ass
%:
Met
asta
ble
solu
tions
wer
efo
rmed
only
whe
ndr
yU
O2C
2O4•
3H2O
was
adde
dto
aso
lutio
nof
UO 2~
NO
3!2
inH
NO
3.
Aux
iliar
yIn
form
atio
n
Co
~1!
mo
~2!
~3!
~4!
~5!
Va
T/
c 2 c 3 c 4 So
C3
a E Ad
Al
1.0
Me
Iso
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
not
inve
stig
ated
.E
stim
ated
Err
or:
Tem
pera
ture
:pr
ecis
ion6
0.2
K~a
utho
rs!.
Sol
ubili
ty:
see
auth
ors’
data
abov
e.
Ref
eren
ces:
1 S.
A.
Nik
itina
,A
.A
.Li
povs
kii,
and
T.
A.
Dem
yano
va,
Rad
iokh
imiy
a20,
900
~197
8!.
2 D.
N.
Byk
hovs
kii,
M.
A.
Kuz
min
a,L.
V.
Sol
ncev
,an
dA
.G
.T
utov
,R
adio
khim
iya2
4,46
8~1
982!
.
5.12
.Am
mon
ium
Tris
„o
-hyd
roxy
benz
oato
…D
ioxo
uran
ate
„V
I…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
mon
ium
tris~
hydr
oxyb
enzo
ato!di
oxou
rana
te~V
I!;
4@U
O2~
C7H
5O3)
3];
@#
Am
mon
ium
hydr
oxyb
enzo
ate~s
alic
ylat
e!;N
H4~
C7H
5O3)
;#
Wat
er;
H 2O
;@7
732-
18-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
2,12
8–
37~1
957!
.
riabl
es:
Pre
pare
dby
:
K:
291
–36
9
4~C
7H5O
3!/g
kg2
1sa
tura
ted
solu
tion:
0–
230
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofN
H4@
UO
2~C
7H5O
3)3]
inw
ater
and
inso
lutio
nsof
NH 4~
C7H
5O3)
atdi
ffere
ntte
mpe
ratu
res
a
Sol
ubili
tyof
NH
4@U
O2~
C7H
5O3)
3]
inw
ater
asa
func
tion
ofte
mpe
ratu
re
Tem
pera
ture
~°C
!U
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(102
m1
/mol
kg2
1 )c
181.
400.
590
503.
731.
58
755.
722.
44
967.
963.
42
Sol
ubili
tyat
18°C
ofN
H 4@U
O2~
C7H
5O3)
3]
asa
func
tion
ofN
H 4~C
7H5O
3)co
ncen
trat
iond
Sol
ubili
tyat
40°C
ofN
H 4@U
O2~
C7H
5O3)
3]
asa
func
tion
ofN
H 4~C
7H5O
3)co
ncen
trat
iond
4~C
7H5O
3)~g
kg2
1 !bU
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(103
mol
kg2
1 )b,c
NH
4~C
7H5O
3)~g
kg2
1 !bU
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(103
mol
kg2
1 )b,c
01.
405.
880
3.09
13.0
200.
291.
2210
01.
245.
21
500.
110.
462
230
0.56
2.35
100
0.08
0.33
6
230
0.12
0.50
4
Sol
ubili
tyof
NH
4@U
O2~
C7H
5O3)
3]
inso
lutio
nsco
ntai
ning
230
gkg2
1N
H4~
C7H
5O3)
Tem
pera
ture
~°C
!U
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(103
mol
kg2
1 )b,c
180.
120.
504
400.
562.
35
701.
054.
41
Sol
ubili
tyat
18°C
ofN
H 4@U
O2~
C7H
5O3)
3]
inso
lutio
nsco
ntai
ning
100
gkg2
1N
H4~
C7H
5O3)
asa
func
tion
ofpH
Sol
ubili
tyat
18°C
ofN
H 4@U
O2~
C7H
5O3)
3]
inso
lutio
nsco
ntai
ning
200
gkg2
1N
H4~
C7H
5O3)
asa
func
tion
ofpH
pHU
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(103
mol
kg2
1 )b,c
pHU
~gkg
21 !b
NH
4@U
O2~
C7H
5O3)
3]
(103
mol
kg2
1 )b,c
5.10
0.08
0.33
65.
250.
120.
504
5.43
0.12
0.50
46.
463.
0913
.0
6.02
2.80
11.8
6.91
11.6
448
.9
6.25
3.09
13.0
8.64
12.9
454
.4
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b G
ram
spe
rkg
satu
rate
dso
lutio
n.c C
alcu
late
dby
com
pile
r.d pH
55.
625625IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
oox
alat
eN
,N 8
-dim
ethy
lfor
mam
ide
mon
osol
vate
;U
O 2C2O
4•C
3H7N
O;
@838
35-4
9-8#
~2!
N,N
8-di
met
hylf
orm
amid
e;C 3H
7NO
;@6
8-12
-2#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
D.
N.
Byk
hovs
kii,
M.
A.
Kuz
min
a,an
dG
.I.
Pet
rzha
k,R
adio
khim
iya2
5,45
–7
~198
3!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
05–
5.0
c 3/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2C2O
4•C
3H7N
Oin
0.1
mol
dm2
3N
aClO
4so
lutio
nsat
25°C
asa
func
tion
ofC
3H7N
Oco
ncen
trat
iona
C3H
7NO
(c2
/mol
dm2
3 !U
O2C
2O4•
C3H
7NO
(103
c 1/m
oldm
23 !
C3H
7NO
(c2
/mol
dm2
3 )U
O2C
2O4•
C3H
7NO
(103
c 1/m
oldm
23 !
0.05
03.
116
0.07
1.0
0.31
60.
01
0.10
1.68
60.
101.
50.
276
0.02
0.15
1.18
60.
042.
00.
256
0.01
0.20
0.99
60.
122.
50.
246
0.01
0.25
0.70
60.
083.
00.
256
0.01
0.35
0.60
60.
014.
00.
266
0.02
0.50
0.46
60.
025.
00.
316
0.02
0.75
0.32
60.
01
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.
Add
ition
alin
form
atio
n:T
heau
thor
sas
sum
edof
the
exis
tenc
eof
UO
2C2O
4~C
3H7N
O!
and
UO 2
C2O
4~C
3H7N
O! 2
spec
ies
inth
esa
tura
ted
solu
tions
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
equi
libra
ted
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nfo
r30
hw
hile
equi
libriu
mw
asat
tain
edaf
ter
6h.
Con
cent
ratio
nof
uran
ium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edsp
ectr
opho
tom
etric
ally
with
arse
nazo
III.
1S
olid
phas
esw
ere
The
UO 2
C2O
4•C
3H7N
Oco
mpl
exw
aspr
epar
edby
prec
ipita
tion
with
0.8
mol
dm2
3ox
alic
acid
ofa
solu
tion
whi
chw
as0.
1m
oldm
23
inur
aniu
man
d0.
6m
oldm
23
inC
3H7N
O.2
The
crys
talli
neso
lidw
asw
ashe
dw
ithw
ater
,et
hano
l,an
det
her,
and
was
char
acte
rized
bych
emic
alan
alys
isan
dx-
ray
diffr
actio
n.
Co
~1!
NH
~2!
@ ~3!
Va
T/
NH
NH
J
5.13
.U
rani
um„V
I…D
ioxo
„8-
hydr
oxyq
uino
-lina
te…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~8-
hydr
oxy-
quin
olin
ate!~
8-dr
oxyq
uino
line!;
UO
2~C
9H6N
O! 2•C
9H7N
O;
or
7H19
N3O
5U;
@178
55-7
5-3#
1,4-
diox
ane;
C 4H8O
2;@1
23-9
1-1#
R.
G.
Cha
rles
and
H.
Fre
iser
,J.
Am
.C
hem
.S
oc.
73,
5223
–4
~195
1!.
riabl
es:
Pre
pare
dby
:
K:
298
J.H
ala
Exp
erim
enta
lDat
ae
solu
bilit
yof
UO 2
~C9H
6NO
! 2•C
9H7N
Oin
1,4-
diox
ane
at25
°Cis
repo
rted
tobex 1
50.
000
51.
Fro
mth
isth
eco
mpi
ler
calc
ulat
ed5
2.76
310
25
mol
kg2
1 .
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
eso
lubi
lity
was
dete
rmin
edby
wei
ghin
gth
ere
sidu
eta
ined
byev
apor
atio
nof
aw
eigh
edpo
rtio
nof
the
satu
rate
dlu
tion.
The
latte
rw
aspr
epar
edby
extr
actin
gth
eso
lid
2~C
9H6N
O! 2•C
9H7N
Oin
aS
oxhl
etex
trac
tor,
and
allo
win
gsa
tura
ted
solu
tion
toco
olto
room
tem
pera
ture
.
UO
2~C
9H6N
O! 2•C
9H7N
Ow
aspr
epar
edby
prec
ipita
tion
with
8-hy
drox
yqui
nolin
eof
anaq
ueou
sso
lutio
nof
aU
O221
salt
acco
rdin
gto
Ref
.1.
The
prod
uct
was
drie
dat
the
reco
mm
ende
dte
mpe
ratu
rein
aco
nsta
ntte
mpe
ratu
reov
en.
8-hy
drox
yqui
nolin
eus
ed~L
emke
Co.!
was
recr
ysta
llize
dfr
omal
coho
lan
dw
ater
.1,
4-di
oxan
e~C
arbi
dean
dC
arbo
nC
o.!w
aspu
rified
byth
epr
oced
ure
give
nin
Ref
.2,
and
dist
illed
from
sodi
umbe
fore
use.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 F.
J.W
elch
er,O
rga
nic
An
aly
tica
lR
ea
ge
nts~
Van
Nos
tran
d,N
ewY
ork,
1947
!,V
ol.
1,p.
265.
2 A.
Wei
ssbe
rger
and
E.
Pos
kaue
r,O
rga
nic
So
lve
nts~
Cla
rend
on,
Oxf
ord,
1935
!.
626626 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
NH
4@U
O2~
C7H
5O3)
3]•
4H2O
was
stirr
edfo
r24
hw
ithth
eso
lutio
nsun
der
the
desi
red
cond
ition
s.In
the
satu
rate
dso
lutio
ns,
uran
ium
was
dete
rmin
edgr
avim
etric
ally
;a
wei
ghed
aliq
uot
ofth
esa
tura
ted
solu
tion
was
evap
orat
edto
dryn
ess,
and
the
resi
due
was
igni
ted
toU
3O8.
NH
4@U
O2~
C7H
5O3)
3]•
4H2O
was
obta
ined
bypr
ecip
itatio
nw
ithsa
licyl
icac
idof
aU
O 221so
lutio
nat
pH3
–6
inth
epr
esen
ceof
NH
41io
ns.
The
salt
was
obta
ined
asor
ange
crys
tals
.It
was
recr
ysta
llize
dfr
omho
tso
lutio
n,an
ddr
ied
at70
–75
°C.
Ana
lysi
s,fo
und/
calc
ulat
edfo
rth
ete
trah
ydra
te~mas
s%!
:U
O221
34.9
6/35
.02;
C 7H5O
3253
.28/
53.3
1;N
H41
2.41
/2.3
3;H 2
O9.
75/9
.34.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
hy C2
~2!
Va
T/
Th
m1
Me
Th
ob so UO
the
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
ypr
oduc
tof
UO 2
~C9H
6NO
! 2•~C
9H7N
O)
was
dete
rmin
edby
two
proc
edur
es.
Inon
e,
1g
ofso
lidco
mpl
exw
aseq
uilib
rate
dfo
r4
days
with
100
mL
solu
tion
initi
ally
cont
aini
ng0.
005
35–
0.05
35m
oldm2
3H
Cl.
Inth
eot
her
one,
the
com
plex
was
prec
ipita
ted
in10
0m
Lvo
lum
etric
flask
sfr
om10
mL
0.1
mol
dm2
3U
O2~
NO
3!2
and
25m
L0.
1m
oldm
23
C9H
7NO
in0.
107
mol
dm2
3H
Cl,
and
pHof
the
solu
tion
was
adju
sted
byad
ding
vary
ing
volu
mes
ofam
mon
iaso
lutio
n.T
hevo
lum
esw
ere
fille
dup
toth
em
ark
with
dist
illed
wat
er,
and
the
flask
sw
ere
equi
libra
ted
for
4da
ys.
Equ
ilibr
atio
nin
both
serie
sof
mea
sure
men
tsw
asca
rrie
dou
tin
anai
r-he
ated
ther
mos
tat.
The
satu
rate
dso
lutio
nsw
ere
anal
yzed
for
uran
ium~
8-hy
drox
yqui
nolin
ew
asde
stro
yed
byig
nitio
nan
dur
aniu
mde
term
ined
titrim
etric
ally
byth
eH
SO
32/P
O432
met
hod3
or,
atlo
wur
aniu
mco
ncen
trat
ions
,co
lorim
etric
ally
with
arse
nazo
,4
and
8-hy
drox
yqui
nolin
e~t
itrim
etric
ally
with
brom
ate!.
The
pHw
asm
easu
red
pote
ntio
met
rical
lyw
itha
glas
sel
ectr
ode.
UO
2~C
9H6N
O! 2•C
9H7N
Ow
aspr
epar
edac
cord
ing
toR
ef.5
from
8-hy
drox
yqui
nolin
epu
rified
bysu
blim
atio
n.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 N.
P.
Kom
aran
dZ
.A
.T
rety
ak,
Zh.
Ana
l.K
him
.10,
236
~195
5!.
2 E.S
.Tin
ovsk
aya,
Nau
ch.Z
ap.K
ievs
k.U
niv.
,Chi
m.S
born
ik5,
220
~194
9!.
3 N.
P.
Kom
ar,
Zh.
Ana
l.K
him
.7,32
5~1
952!
.4 V
.I.
Kuz
nets
ov,
Dok
l.A
kad.
Nau
kS
SR5
0,22
7~1
945!
.5 R
.B
erg,
Th
eU
seo
fQ
uin
olin
ol
inA
na
lytic
al
Ch
em
istr
y~R
ussi
antr
ansl
atio
nof
Ger
man
editi
on!,~O
NT
I,M
osco
w,
1937
!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
o~8
-hyd
roxy
-qui
nolin
ate!~
8-hy
drox
yqui
nolin
e!;
2~C
9H6N
O! 2•C
9H7N
O;
orC 2
7H19
N3O
5U;
@178
55-7
5-3#
Am
mon
ium
carb
onat
e;(N
H 4!2C
O3;
@506
-87-
6#A
mm
oniu
mch
lorid
e;N
H 4C
l;@1
2125
-01-
8#W
ater
;H 2
O;
@773
2-18
-5#
A.
E.
Kly
gin
and
I.D
.S
mirn
ova,
Zh.
Neo
rg.
Khi
m.4,
42–
5~1
959!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
013
–0.
32J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2~C
9H6N
O! 2•C
9H7N
Oat
25°C
in(N
H 4! 2
CO
3so
lutio
nsa,
b
(NH
4!2C
O3
2/m
oldm
23 )
C9H
7NO
c
(103
mol
dm2
3 )U
d
(103
mol
dm2
3 )@H
1#e
(109
mol
dm2
3 )
0.01
299
0.23
50.
312
19.9
5
0.02
598
0.48
50.
231
8.71
0.03
897
0.41
50.
347
5.89
0.06
495
1.18
0.56
33.
89
0.12
992.
200.
9997
2.13
8
0.19
493.
071.
351.
349
0.25
983.
801.
590.
1514
0.29
884.
601.
780.
7763
0.32
474.
325
1.83
0.14
8
nic
stre
ngth
kept
at1.
0m
oldm2
3by
usin
gN
H 4C
l.he
auth
ors
did
not
repo
rtab
out
the
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
e.T
heco
mpi
ler
assu
med
this
tobe
O2~
C9H
6NO
! 2•C
9H7N
O,
@178
55-7
5-3#.
otal
conc
entr
atio
nof
8-hy
drox
yqui
nolin
ein
the
satu
rate
dso
lutio
ns.
once
ntra
tion
ofur
aniu
min
the
satu
rate
dso
lutio
ns.
Hof
the
equi
libriu
msa
tura
ted
solu
tions
.
ditio
nalI
nfor
mat
ion:
Fro
mth
ein
crea
seof
the
solu
bilit
yof
UO 2~C
9H6N
O! 2•C
9H7N
Oin
the
pres
ence
of(N
H 4!2C
O3,
and
from
the
solu
bilit
yof
the
form
er,
1
auth
ors
calc
ulat
edth
ein
stab
ility
cons
tant
ofth
eU
O2~
CO
3!342
com
plex
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
com
plex
UO
2~C
9H6N
O! 2•C
9H7N
Ow
aseq
uilib
rate
din
volu
met
ricfla
sks
with
solu
tions
cont
aini
ngth
ede
sire
dco
ncen
trat
ion
of(N
H4!
2CO
3at
ioni
cst
reng
thof
1.0
mol
dm23 .
the
flask
sw
ere
shak
enin
ath
erm
osta
tfo
r24
hw
hich
was
foun
dsu
ffici
ent
tore
ach
equi
libriu
m.
The
satu
rate
dso
lutio
nsw
ere
filte
red
thro
ugh
aN
o.4
sint
ered
glas
sfil
ter,
and
anal
yzed
for
uran
ium
~8-h
ydro
xyqu
inol
ine
was
dest
roye
dby
igni
tion
and
uran
ium
dete
rmin
edtit
rimet
rical
lyor
,at
low
conc
entr
atio
ns,
colo
rimet
rical
lyw
ithar
sena
zo!,an
d8-
hydr
oxyq
uino
line
~titr
imet
rical
lyw
ithbr
omat
e!.T
hepH
was
mea
sure
dpo
tent
iom
etric
ally
with
agl
ass
elec
trod
e.T
heco
ncen
trat
ion
ofth
e(N
H 4! 2
!CO
3st
ock
solu
tion
was
dete
rmin
edvo
lum
etric
ally
base
don
the
volu
me
ofC
O 2ga
sev
olve
d.
UO
2~C
9H6N
O! 2
.~C
9H7N
O!
was
prep
ared
acco
rdin
gto
Ref
.2
from
8-hy
drox
yqui
nolin
epu
rified
bysu
blim
atio
n.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.
E.
Kly
gin
and
N.
S.
Kol
yaga
,Z
h.N
eorg
.K
him3
,27
67~1
958!
.2 R
.B
erg,
Th
eU
seo
fQ
uin
olin
ol
inA
na
lytic
al
Ch
em
istr
y~R
ussi
antr
ansl
atio
nof
Ger
man
editi
on!~O
NT
I,M
osco
w,1
937!.
627627IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obi
s~8-
hydr
oxy-
quin
olin
ate!~
8-hy
drox
yqui
nolin
e!;U
O2~
C9H
6NO
! 2•C
9H7N
O;
orC
27H
19N
3O5U
;@1
7855
-75-
3#~2
!W
ater
;H 2
O;
@773
2-18
-5#
A.
E.
Kly
gin
and
N.
S.
Kol
yaga
,Z
h.N
eorg
.K
him
.3,27
67–
70~1
958!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
aS
olub
ility
ofU
O2~
C9H
6NO
! 2•C
9H7N
Oat
25°C
inw
atera
C9H
7NO
b
(103
mol
dm2
3 )U
e
(103
mol
dm2
3 )pH
fK
spg
(1029
mol
2dm
26 )
0.60
1c0.
218
3.90
1.63
2.40
c0.
797
3.40
1.79
2.95
c0.
983
3.26
0.87
5.75
c1.
913.
071.
4718
.7c
6.19
2.72
3.10
2.24
d1.
783.
382.
608.
95d
5.51
2.84
1.18
16.9
d7.
312.
651.
211.
960.
5h
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b T
otal
conc
entr
atio
nof
8-hy
drox
yqui
nolin
ein
the
satu
rate
dso
lutio
n.c O
btai
ned
byis
othe
rmal
proc
edur
e.S
atur
ated
solu
tions
cont
aine
dva
ryin
gco
ncen
trat
ion
ofH
Cl,
from
0.00
535
to0.
0535
mol
dm2
3 .d O
btai
ned
bypr
ecip
itatio
npr
oced
ure.
Sat
urat
edso
lutio
nsco
ntai
ned
0.02
mol
dm2
3N
O32
,0.
027
mol
dm2
3C
l2,
and
0.04
3–
0.07
2m
oldm
23
NH
41.
e Tot
alco
ncen
trat
ion
ofur
aniu
min
the
satu
rate
dso
lutio
n.f pH
ofth
esa
tura
ted
solu
tion.
g Ksp
5@U
O221
#@R
2#2 @
HR
#~H
Rst
ands
for
C 9H7N
O!;
calc
ulat
edby
the
auth
ors
from
pHan
dco
ncen
trat
ions
ofur
aniu
man
dC
9H7N
Oby
usin
gau
thor
s’va
lues
ofdi
ssoc
iatio
nco
nsta
nts
of8-
hydr
oxyq
uino
line,K15
@H1
#@H
R#@
H2R
1#2
15
8.66
310
26
and
K2
5@H
1#@
R2
#@H
R#2
15
1.76
310
210
,an
dth
eeq
uilib
rium
cons
tant
for
the
hydr
olys
isof
UO
221,
Kh5
@UO
2OH
1#@
H1
#@U
O221
#21,
take
nfr
omR
ef.
1.h A
vera
geva
lue~
auth
ors!.
Add
ition
alin
form
atio
n:T
heau
thor
squ
ote
Ref
.2,
not
avai
labl
eto
the
com
pile
r,w
here
Ksp
ofU
O2~
C9H
6NO
! 2•C
9H7N
Ow
asre
port
edto
be3.
483
102
24m
ol2
dm2
6 .K
lygi
nan
dK
olya
gaco
nsid
ered
this
valu
eto
beer
rone
ous
sinc
ein
itsde
term
inat
ion
seve
ral
equi
libria
such
aspr
oton
atio
nof
C 9H
7NO
,co
mpl
exat
ion
ofU
O 221w
ithac
etat
eio
n,an
dhy
drol
ysis
ofU
O 221w
ere
not
take
nin
toco
nsid
erat
ion.
Co
~1!
bis
UO
~2!
~3!
~4!
Va
T/
c 2 (c a Io b T U c T d C e p Ad
the
J
Sol
ubili
ty:
see
abov
e.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
obi
s~8-
hydr
oxy-
quin
olin
ate!;
2~C
9H6N
O! 2
;or
UO
2C18
H12
N2O
4U;
@#
Tric
hlor
omet
hane
;C
HC
l3;
@67-
66-3
#
S.
Oki
,A
nal.
Chi
m.
Act
a44,
315
–22
~196
9!.
riabl
es:
Pre
pare
dby
:
J.H
ala
Exp
erim
enta
lDat
ae
solu
bilit
yof
UO 2
~C9H
6NO
! 2,
atan
unsp
ecifi
edro
omte
mpe
ratu
re,
inch
loro
form
isre
port
edto
bec 1
53.
993
102
4m
oldm
23 .
The
mpl
exdi
dno
tch
ange
inco
mpo
sitio
non
diss
olut
ion.
ditio
nali
nfor
mat
ion:
the
pres
ence
ofet
hano
lor
inch
loro
form
satu
rate
dw
ithw
ater
,th
eco
mpl
exde
com
pose
dup
ondi
ssol
utio
nac
cord
ing
toth
eeq
uatio
ns
3U
O2~
C9H
6NO
! 2~s
!1C
2H5O
H�
UO
2~C
9H6N
O! 2•C
9H7N
O1
UO
2~C
9H6N
O! 2•C
2H5O
H~s
!,
or
2U
O2~
C9H
6NO
! 2~s
!1H
2O�
UO
2~C
9H6N
O! 2•C
9H7N
O1
UO
2~C
9H6N
O!~
OH
! ~s!
,
spec
tivel
y~C
9H7N
Ois
8-hy
drox
yqui
nolin
e!.D
isso
lutio
nof
UO 2
~C9H
6NO
! 2in
etha
nolc
onta
inin
gch
loro
form
resu
lted
inth
efo
rmat
ion
ada
rkre
dso
lutio
nan
da
brow
nso
lidre
sidu
e.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
quili
briu
mw
asat
tain
edin
1–
2ys
.U
rani
umin
the
satu
rate
dso
lutio
nsw
asde
term
ined
lorim
etric
ally
with
arse
nazo
III1af
ter
rem
oval
ofC
HC
l 3an
dhy
drox
yqui
nolin
eby
heat
ing
the
sam
ple
at18
0°C
.
UO
2~C
9H6N
O! 2
was
prep
ared
acco
rdin
gto
Ref
.2by
heat
ing
the
UO
2~C
9H6N
O! 2•C
9H7N
Oco
mpl
exat
260
°Cfo
r1
h.T
hela
tter
was
prep
ared
acco
rdin
gto
the
proc
edur
egi
ven
inth
eco
mpi
latio
nfo
rth
eU
O 2~C
9H6N
O! 2•C
9H7N
O/e
than
ol/C
HC
l 3sy
stem
repo
rted
inth
esa
me
orig
inal
docu
men
t.T
heco
mpo
sitio
nof
UO
2~C
9H6N
O! 2
was
verifi
edby
chem
ical
anal
ysis
.C
hlor
ofor
m~G
.R
.gr
ade!
cont
aini
ng0.
5%et
hano
lw
asfir
stpu
rified
from
the
latte
rby
was
hing
with
dist
illed
wat
ertw
ice.
Itw
asth
ende
hydr
ated
,fir
stw
ithan
hydr
ous
Na
2SO
4,an
dth
enby
pass
ing
itth
roug
ha
colu
mn
ofsi
lica
gel.
Ref
eren
ces:
1 H.
Oni
shia
ndY
.H
iguc
hi,
Bun
seki
Kag
aku14
,11
41~1
965!
.2 W
.W
.W
endl
andt
,A
naly
t.C
hem
.28,
499
~195
6!.
628628 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
obi
s~8-
hydr
oxy-
quin
olin
ate!~
8-hy
drox
yqui
nolin
e!;U
O2~
C9H
6NO
! 2•C
9H7N
O;
orC 2
7H19
N3O
5U;
@178
55-7
5-3#
~2!
Eth
anol
;C 2
H6O
;@6
4-17
-5#
~3!
Tric
hlor
omet
hane
;C
HC
l3;
@67-
66-3
#
S.
Oki
,A
nal.
Chi
m.
Act
a44,
315
–22
~196
9!.
Var
iabl
es:
Pre
pare
dby
:
100
w2
/mas
s%:0
.5J.
Ha
´ la
Exp
erim
enta
lDat
a
Sol
ubili
tyof
UO
2~C
9H6N
O! 2•C
9H7N
Oin
chlo
rofo
rmco
ntai
ning
0.5%
etha
nol
a
Sol
vent
UO
2~C
9H6N
O! 2•C
9H7N
O(1
04c 1
/mol
dm2
3 !
CH
Cl 3
8.74
8.74
8.16
8.21
7.89
8.356
0.40
b
CH
Cl 31
0.5%
C 2H
6O9.
4810
.12
9.66
9.48
10.5
89.
8660.
48b
a At
unsp
ecifi
edro
omte
mpe
ratu
re.
Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b A
vera
geva
lue
and
stan
dard
devi
atio
n~c
ompi
ler!.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Ura
nium
inth
esa
tura
ted
solu
tions
was
dete
rmin
ed,
afte
rre
mov
alof
CH
Cl
3an
d8-
hydr
oxyq
uino
line
byhe
atin
gth
esa
mpl
eto
180
°C,
colo
rimet
rical
lyw
ithar
sena
zoIII
.1
UO
2~C
9H6N
O! 2•~C
9H7N
O!
was
prep
ared
bypr
ecip
itatin
gur
aniu
mfr
om20
0m
Lso
lutio
nco
ntai
ning1
gU
O 2~N
O3!
2•6H
2Ow
itha
solu
tion
of1
g8-
hydr
oxyq
uino
line
in10
0m
L1
mol
dm2
3H
Cl.
The
solu
tion
was
heat
edto
70°C
and
2m
oldm
23
NH
4OH
solu
tion
was
adde
ddr
opw
ise
whi
lest
irrin
gun
tilno
furt
her
prec
ipita
teap
pear
ed.
Afte
rdi
gest
ion
for
1h,
the
prec
ipita
tew
asfil
tere
d,w
ashe
dw
ithho
tw
ater
,an
ddr
ied
over
P 2O
5.8-
hydr
oxyq
uino
line,
G.R
.gra
de,w
asus
edw
ithou
tfur
ther
purifi
catio
n.T
heco
mpo
sitio
nof
the
com
plex
was
verifi
edby
chem
ical
anal
ysis
.C
HC
l3,
G.
R.
grad
e,co
ntai
ning
0.5%
etha
nol
was
first
purifi
edfr
omet
hano
lby
was
hing
itw
ithdi
still
edw
ater
twic
e.It
was
then
dehy
drat
ed,
first
with
anhy
drou
sN
a2S
O4,
and
then
bypa
ssin
git
thro
ugh
aco
lum
nof
silic
age
l.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Co
~1!
UO
~2!
Va
Th
co Ad
In re of Me
Iso
da co 8-
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
The
solu
bilit
ypr
oduc
tof
UO 2
H2R
was
dete
rmin
edis
othe
rmal
lyat
pH3
to4.
5si
nce
atpH,
3so
lidH 4
Rco
ntam
inat
edU
O 2H2R
inth
eeq
uilib
rium
solid
phas
ew
hile
atpH
.4.
5th
eso
lubi
lity
ofU
O 2H
2Rin
crea
sed
cons
ider
ably
due
toco
mpl
exfo
rmat
ion
inth
eso
lutio
n.M
easu
rem
ents
wer
eca
rrie
dou
tin
volu
met
ricfla
sks,
each
cont
aini
ng25
mL
0.1
mol
dm2
3U
O2~
NO
3!2
and
50m
L0.
09m
oldm
23
~NH
4!2H
2R.
The
pHof
the
solu
tions
was
adju
sted
byad
ding
vary
ing
volu
mes
of0.
12m
oldm2
3am
mon
iaso
lutio
n.E
quili
briu
mw
asre
ache
din
9da
ys.
Inth
esa
tura
ted
solu
tions
,ur
aniu
mw
asde
term
ined
phot
omet
rical
lyw
ithH
2O2
inal
kalin
em
ediu
m,2
H4R
bytit
ratio
nw
ithT
h~N
O3!
4so
lutio
n,3
and
pHw
asde
term
ined
pote
ntio
met
rical
lyus
ing
quin
hydr
one
elec
trod
e.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
typr
oduc
t:se
eab
ove.
Ref
eren
ces:
1 N.
P.
Kom
aran
dZ
.A
.T
rety
ak,
Zh.
Ana
lit.
Khi
m.10
,23
6~1
955!
.2 J.
Rod
den,
inA
na
lytic
al
Ch
em
istr
yo
fth
eM
an
ha
tta
nP
roje
ct~R
ussi
antr
ansl
atio
n!~I
L,M
osco
w,
1956
!,p.
124.
3 J.J.
Frit
zan
dJ.
J.F
ord,
Ana
lyt.
Che
m.
25,
1640
~195
3!.
5.15
.U
rani
um„V
I…D
ioxo
†4,
4,4-
trifl
uoro
-1-„2-
thie
nyl…
-1,3
-but
aned
iona
te‡
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ura
nium
~VI!
diox
o@4
,4,4
-trifl
uoro
-1-~2
-thi
enyl!
-1,3
-but
aned
iona
te#;
6H10
F 6O
6S2U
orU
O2~
C8H
5F3O
2S! 2
;@1
8444
4-18
-3#S
olve
nts
K.A
kiba
,N.S
uzuk
i,an
dT
.Kan
no,K
akur
iken
Ken
kyu
Hok
oku
2,15
0–
2~1
969!
.
riabl
es:
Pre
pare
dby
:
K:2
98T
.T
omin
aga
Exp
erim
enta
lDat
a
Sol
ubili
tyof
C16
H10
F 6O
6S2U
at25
°Cin
vario
usso
lven
tsa
Sol
vent
C16
H10
F 6O
6S2U
(104
c 1/m
oldm
23 )
exan
e,C 6H
14,
@110
-54-
3#0.
10
epta
ne,
C 7H16
,@1
42-8
2-5#
0.12
cloh
exan
e,C 6H
12,
@110
-82-
7#0.
14
nzen
e,C 6H
6,@7
1-43
-2#
200
uene
,C 7
H8,
@108
-88-
3#15
0
prop
ylbe
nzen
e,C 9H
12,
@98-
82-8
#29
.0
loro
benz
ene,
C 6H5C
l,@1
08-9
0-7#
200
ichl
orob
enze
ne,
C 6H4C
l 2,
@95-
50-1
#10
0
hlor
omet
hane
,C
H 2Cl 2
,@7
5-09
-2#
700
loro
form
,C
HC
l 3,@6
7-66
-3#
270
rach
loro
met
hane
,C
Cl
4,@5
6-23
-5#
7.8
hlor
oben
zene
C 6H3C
l 3b
32.0
quili
briu
mso
lidph
ases
not
inve
stig
ated
.om
erno
tsp
ecifi
ed.
ditio
nali
nfor
mat
ion:
asu
bseq
uent
docu
men
t,1
the
auth
ors
repo
rted
,in
grap
hica
lfor
m,
the
solu
bilit
yof
C16
H10
F 6O
6S2U
inn-
hept
ane
and
CC
l4
asa
func
tion
the
conc
entr
atio
nof
4,4,
4-tr
ifluo
ro-1
-~2
-thi
enyl!
-1,3
-but
aned
ione
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solu
tew
assh
aken
with
the
desi
red
solv
ent
for
abou
t10
0h
inan
air
ther
mos
tat.
Afte
rce
ntrif
ugat
ion,
gac
tivity
ofth
esu
pern
atan
tso
lutio
nw
asm
easu
red.
The
solu
bilit
ies
wer
eca
lcul
ated
usin
ga
calib
ratio
ncu
rve
prep
ared
bym
eans
ofso
lutio
nsco
ntai
ning
know
nam
ount
sof
237 U
O221
.
The
ofC 1
6H10
F 6O
6S2U
com
plex
was
prep
ared
byad
ding
stoi
chio
met
ricam
ount
ofth
elig
and
toa
war
mso
lutio
nof
uran
ium~
VI!
diox
ide
diac
etat
ela
bele
dw
ith237 U
.T
here
sulta
ntye
llow
prec
ipita
tew
asfil
tere
d,w
ashe
dw
ithw
ater
and
hexa
ne,
and
drie
dov
erP 2O
5un
der
redu
ced
pres
sure
.D
ryso
lven
tsw
ere
used
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 K.
Aki
baan
dN
.S
uzuk
i,K
akur
iken
Ken
kyu
Kok
oku3,
144
~197
0!.
629629IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
5.14
.U
rani
um„V
I…D
ioxo
„et
hyle
nedi
amin
etet
raac
etat
e…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~VI!
diox
oet
hyle
nedi
amin
ete
traa
ceta
te;
C10
H14
N2O
10U
;~2
!W
ater
;H 2
O;
@773
2-18
-5#
A.
E.
Kly
gin,
I.D
.S
mirn
ova,
and
N.
A.
Nik
olsk
ii,Z
h.N
eorg
.K
him
.4,
2623
–9~
1959
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:298
J.H
ala
Exp
erim
enta
lDat
a
Com
posi
tion
ofso
lutio
nssa
tura
ted
with
C10
H14
N2O
10U
at25
°Ca
@H1
#(1
04m
oldm
23 )
Ub
(104
mol
dm2
3 )H
4Rc
(102
mol
dm2
3 )K
spd
(106
mol
2dm
26 )
8.51
1.72
2.00
2.04
7.94
1.61
2.01
1.96
6.46
1.65
1.99
2.11
5.89
1.71
1.63
1.82
5.29
1.64
1.99
2.18
3.98
1.71
2.04
2.41
1.35
2.44
1.97
3.02
0.25
73.
552.
012.
01
2.25
60.
18e
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b T
otal
conc
entr
atio
nof
uran
ium
inth
esa
tura
ted
solu
tion.
c Tot
alco
ncen
trat
ion
ofet
hyle
nedi
amin
ete
traa
cetic
acid
(H4R
)in
the
satu
rate
dso
lutio
n.d K
sp5
@UO
221
#@H
2R22
#~H
4Rst
ands
for
ethy
lene
diam
ine
tetr
aace
tic!;
calc
ulat
edby
the
auth
ors
from
pH,
and
tota
lco
ncen
trat
ions
ofur
aniu
man
dH 4
Rby
usin
gau
thor
s’va
lues
ofth
efir
stan
dse
cond
diss
ocia
tion
cons
tant
ofH
4R,
and
the
equi
libriu
mco
nsta
ntfo
rth
ehy
drol
ysis
ofU
O 221,
Kh5
@UO
2OH
1#@
H1
#@U
O22
1#2
1,
take
nfr
omR
ef.
1.e A
vera
geva
lue~
auth
ors!.
Add
ition
alin
form
atio
n:F
rom
the
initi
alco
ncen
trat
ions
ofU
O 2~N
O3!
2an
dH 4
R,
and
from
the
stoi
chio
met
ryof
the
prec
ipita
tion
reac
tion,
the
com
pile
res
timat
edio
nic
stre
ngth
ofth
esa
tura
ted
solu
tions
tobe
appr
oxim
atel
y0.
11m
oldm
23 .
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Co
~1!
bis
C1
~2!
Va
T/
n-h
n-h
cy be tol
iso
ch o-d
dic
ch tet
tric
a E b Is Ad
In of Me
J
6.T
heS
olub
ility
ofN
eptu
nium
Com
poun
ds
6.1.
Nep
tuni
um„V
I…D
ioxo
carb
onat
e
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Nep
tuni
um~V
I!di
oxoc
arbo
nate
;N
pO 2C
O3
;@
#C
arbo
ndi
oxid
e;C
O 2;@1
24-3
8-9#
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
Y.K
ato,
T.K
imur
a,Z
.Yos
hida
,and
N.N
itani
,Rad
ioch
im.A
cta
82,
63–
8~1
998!
.
riabl
es:
Pre
pare
dB
y:
K:
298
~par
tialp
ress
ure
ofC
O 2!/%
:80
/mol
dm2
3 50.
1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NpO
2CO
3at
25°C
asa
func
tion
ofca
rbon
ate
ion
conc
entr
atio
nin
0.1
mol
dm2
3N
aClO
4so
lutio
nsa
2lo
g @C
O322
#2
log
Np@
~VI!
#pH
2lo
g @C
O322
#2
log
Np@
~VI!
#pH
2lo
g @C
O322
#2
log
Np@
~VI!
#
912
.27
2.37
3.24
11.3
72.
712.
8712
.11
2.01
812
.09
2.06
3.25
11.3
52.
763.
1411
.57
2.66
212
.01
2.46
3.64
10.5
73.
283.
1511
.55
2.04
511
.75
2.36
3.64
10.5
73.
103.
4211
.01
3.03
411
.57
2.80
5.81
6.23
5.11
3.81
10.2
33.
47
511
.55
2.52
5.90
6.05
4.86
6.29
5.27
4.36
511
.55
2.49
5.91
6.03
4.94
6.34
5.17
4.33
711
.11
2.51
5.93
5.99
5.06
6.35
5.15
4.42
310
.39
3.80
5.99
5.87
5.03
6.36
5.13
4.34
110
.23
3.74
6.03
5.79
4.71
6.43
4.99
3.66
49.
773.
896.
045.
774.
936.
444.
973.
71
59.
774.
026.
145.
574.
806.
464.
934.
04
89.
494.
266.
175.
514.
766.
474.
913.
65
89.
294.
226.
205.
454.
256.
504.
853.
41
99.
074.
816.
265.
334.
106.
534.
793.
56
28.
614.
866.
285.
293.
976.
544.
773.
22
88.
494.
886.
285.
293.
816.
664.
532.
88
88.
095.
136.
305.
253.
756.
714.
432.
51
5.05
7.75
4.96
6.42
5.01
3.47
6.72
4.41
2.50
5.19
7.47
5.10
6.47
4.91
2.90
6.75
4.35
2.47
5.20
7.45
5.18
6.50
4.85
2.78
6.76
4.33
2.42
5.94
5.97
4.73
6.52
4.81
2.71
6.77
4.31
2.48
5.97
5.91
4.62
6.54
4.77
2.63
6.82
4.21
2.42
6.63
4.59
2.52
a Sol
idph
ase
was
NpO 2
CO
3,@
#,in
alls
olut
ions
.
Add
ition
alin
form
atio
n:F
ree
carb
onat
eio
nco
ncen
trat
ion
was
calc
ulat
edby
the
sam
epr
oced
ure
asin
the
auth
ors’
prev
ious
wor
k.1,
2U
sing
leas
t-sq
uare
san
alys
is,
the
follo
win
gco
nsta
nts
wer
eob
tain
ed:
solu
bilit
ypr
oduc
tof
NpO
2CO
3,K
sp5
@NpO
221#@
CO
322#5
102
(14.
046
0.07
) ;st
abili
tyco
nsta
nts
ofN
p~V
I!ca
rbon
atoc
ompl
exes
,bn5
@NpO
2~C
O3!
n22
2n#@
NpO
221#2
1@C
O322
#2n,
b15
109.
206
0.10
,an
db
35
1020
.416
0.09
.F
orth
edi
carb
onat
o-co
mpl
ex,
the
uppe
rlim
iton
lyw
asob
tain
edasb
2,
1014
.2.
Inan
earli
erpa
per,3
the
auth
ors
repo
rted
Ksp
510
2(1
4.62
60.
12)
unde
rth
esa
me
cond
ition
s.In
this
pape
r,K
spw
asob
tain
edfr
omsi
xm
easu
rem
ents
perf
orm
edat
pH,4,
and
solu
bilit
yda
taw
ere
pres
ente
din
grap
hica
lfor
mon
ly.
630630 JIRI HALA
5.16
.U
rani
um„IV…
Pht
halo
cyan
inat
e
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Ura
nium
~IV
!bi
s~ph
thal
ocya
nina
te!;C
64H
32H
16U
orU
~C32
H16
N8!
2;@
#~2
!S
olve
nts
P.N
.Mos
kale
v,G
.N.S
hapk
in,a
ndY
u.S
.Mis
ko,R
adio
khim
iya
20,
343
–4
~197
8!.
Var
iabl
es:
Pre
pare
dB
y:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
C64
H32
N16
Uin
two
solv
entsa
Sol
vent
C64
H32
N16
U~g
dm2
3 !C
64H
32N
16U
(104
c 1/m
oldm
23 )b
benz
ene,
C 6H6,
@71-
43-2
#0.
031
0.41
3
1-ch
loro
naph
thal
ene,
C 8H10
Cl,
@90-
13-1
#0.
314.
13
a The
solu
bilit
yw
asin
depe
nden
tof
tem
pera
ture
over
the
rang
eof
13–
50°C
.E
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
b Cal
cula
ted
byco
mpi
ler.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
solid
was
equi
libra
ted
with
the
desi
red
solv
ent
ingr
ound
glas
sst
oppe
red
cylin
ders
ina
them
osta
ted
bath
until
equi
libriu
mw
asat
tain
ed.
The
satu
rate
dso
lutio
nsw
ere
filte
red
thro
ugh
agl
ass
filte
r,an
aliq
uot
was
dilu
ted
to;
102
5m
oldm
23
with
dim
ethy
lform
amid
eco
ntai
ning
1%hy
draz
ine
hydr
ate,
and
the
conc
entr
atio
nof
phth
aloc
ynai
new
asde
term
ined
spec
trop
hoto
met
rical
ly.
C64
H32
N16
Uw
aspr
epar
edac
cord
ing
toR
ef.
1.C
hem
ical
com
posi
tion
and
purit
yof
the
solu
tew
ere
chec
ked
bych
emic
alan
alys
isan
dx-
ray
diffr
actio
n.R
eage
ntgr
ade
solv
ents
wer
eus
edw
ithou
tfu
rthe
rpu
rifica
tion.
Est
imat
edE
rror
:S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 I.S
.K
irin,
A.
B.
Kol
yadi
n,an
dP
.N
.M
oska
lev,
Zh.
Neo
rg.
Khi
m.
16,
2731
~197
1!.
Co
~1!
~2!
~3!
~4!
Va
T/
p2
c 3 pH 2.7
2.8
2.9
3.0
3.1
3.1
3.1
3.3
3.7
3.8
4.0
4.0
4.1
4.2
4.3
4.6
4.6
4.8
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
6.2.
Sal
tsof
Dio
xoca
rbon
ato
Nep
tuna
te„V…„-1…
6.2.
1.E
valu
atio
nof
the
NaN
pO2C
O3¿
CO
2¿N
aClO
4¿H
2OS
yste
m
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
diox
ocar
bona
tone
ptun
ate
~V!;
NaN
pO2~
CO
3!;
7127
-86-
3#C
arbo
ndi
oxid
e;C
O 2;@1
24-3
8-9#
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
The
NaN
pO2C
O3
isth
em
osti
mpo
rtan
tnep
tuni
umco
mpo
und
from
the
poin
tofv
iew
ofpo
ssib
lele
achi
ngne
ptun
ium
from
radi
oact
ive
ste
repo
sito
ries.
Itsso
lubi
lity
inca
rbon
ate
cont
aini
ngso
lutio
nsha
sbe
enin
vest
igat
edin
seve
rald
ocum
ents
.U
eno
and
Sai
to1
mea
sure
dso
lubi
lity
asa
func
tion
ofN
a 2CO
3co
ncen
trat
ion
at29
3.1
Kin
solu
tions
with
varia
ble
ioni
cst
reng
th.
May
a2
mea
sure
dth
eso
lubi
lity
298.
1K
inN
a 2CO
3so
lutio
nsco
ntai
ning
0.1
mol
dm23
NaC
lO4.
Lem
iree
ta
l.3us
edN
a 2CO
3/N
aClO
4so
lutio
nsof
cons
tant
ioni
cen
gth
of1.
0m
oldm
23
atth
ree
tem
pera
ture
s.M
einr
ath
4ca
rrie
dou
thi
sm
easu
rem
ents
atio
nic
stre
ngth
ofap
prox
imat
ely
0.1
mol
dm2
3
ClO
4in
anat
mos
pher
eof
nitr
ogen
gas
cont
aini
ng1%
CO
2.G
rent
hee
ta
l.5us
ed3.
0m
oldm
23
ioni
cst
reng
that
293.
1K
,an
dN
eck
al.6
perf
orm
edth
eir
mea
sure
men
tsat
seve
rali
onic
stre
ngth
san
dat
298.
1K
.In
Ref
s.2
–6,
the
solu
bilit
yof
NaN
pO2C
O3
was
repo
rted
afu
nctio
nof
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
n.T
hela
tter
was
calc
ulat
edfr
omth
em
easu
red
pHof
the
satu
rate
dso
lutio
ns,
and
set
ofaq
ueou
seq
uilib
riaof
CO
2,H
CO
32,
and
CO 322
~see
Crit
ical
Eva
luat
ion
for
the
UO 2C
O3–
CO
2–
NaC
lO4–
H2O
syst
em!.
Due
toth
edi
ffere
ntco
nditi
ons
used
inth
ese
docu
men
ts,
and
also
beca
use
Ref
s.2
–5
pres
ente
dth
eso
lubi
lity
data
ingr
aphi
calf
orm
ly,
the
poss
ibili
ties
for
deta
iled
com
paris
onar
era
ther
limite
d.N
ever
thel
ess,
som
ege
nera
lfe
atur
esof
this
syst
emha
veem
erge
d.fe
renc
es2
–6
agre
ein
that
the
solu
bilit
yof
NaN
pO2C
O3,
whe
npl
otte
dag
ains
teq
uilib
rium
CO 322
conc
entr
atio
n,pa
sses
thro
ugh
ani
mum
.In
the
rang
eof
min
imum
solu
bilit
yof
NaN
pO 2CO
3,th
ela
tter
isde
term
ined
pred
omin
antly
byth
eso
lubi
lity
prod
uct.
The
tabl
em
mar
izes
the
appr
oxim
ate
min
imum
solu
bilit
yda
tafo
rN
aNpO
2CO
3,as
estim
ated
byth
eev
alua
tor
from
the
grap
hica
lrep
rese
ntat
ion
the
auth
ors’
data
:
nim
umN
aNpO
2CO
3so
lubi
lity
~mol
dm2
3 !C
orre
spon
ding
@CO
322#
rang
e~m
oldm
23 !
Ioni
cst
reng
th~m
oldm
23 !
Ref
eren
ce
33
102
63
310
24–
9310
24
1.0
2
13
102
61
310
24–
2.53
102
41.
03
23
102
52.
5310
24–
6.33
102
30.
14
1.33
102
61
310
24
3.0
5
23
102
51.
5310
24–
2310
23
0.1
6
3.23
102
61.
5310
24–
1310
23
1.0
6
13
102
61.
5310
24
3.0
6
23
102
71
310
24
5.0
6
Fro
mth
em
oste
xten
sive
stud
yof
Nec
ke
ta
l.6it
follo
ws
that
the
mag
nitu
deof
the
min
imum
solu
bilit
yof
NaN
pO 2CO
3,as
wel
las
the
carb
onat
eio
nco
ncen
trat
ion
rang
ew
here
itap
pear
s,ar
ede
pend
ent
onio
nic
stre
ngth
(NaC
lO4)
.T
akin
gth
isin
toac
coun
tth
ere
appe
ars
tobe
ago
odag
reem
ent
amon
gth
epu
blis
hed
data
.T
here
isal
soan
agre
emen
tin
Ref
s.2
–6
inth
atat
@CO
322#
conc
entr
atio
nshi
gher
than
102
3–
102
2m
oldm
23
the
solu
bilit
yof
NaN
pO2C
O3
incr
ease
sw
ithin
crea
sing
carb
onat
eio
nco
ncen
trat
ion.
Thi
sef
fect
ispa
rtic
ular
lypr
onou
nced
athi
ghca
rbon
ate
ion
conc
entr
atio
ns,
1an
dha
sbe
enex
plai
ned
2–
6in
term
sof
the
form
atio
nof
carb
onat
ocom
plex
esN
pO2~
CO
3!n1
22
nin
the
satu
rate
dso
lutio
ns.
The
num
ber
ofco
mpl
exes
exis
ting
depe
nds
onth
e@C
O322
#ra
nge
used
.T
hus,
whi
leM
einr
ath
4
repo
rted
the
com
plex
esw
ithn5
1an
d2
at@C
O322
#,10
22
mol
dm2
3 ,th
eex
iste
nce
ofth
eth
irdco
mpl
ex(
n5
3)
has
been
confi
rmed
athi
gher
carb
onat
eio
nco
ncen
trat
ions
.5,
6
Aco
nsis
tent
set
ofso
lubi
lity
prod
uct
valu
esof
NaN
pO 2CO
3ha
sbe
enre
port
edw
ithpa
rtic
ular
lyex
celle
ntag
reem
ent
for
Ksp
valu
esob
tain
edat
298.
1K
and
0.1
and
1.0
mol
dm23
NaC
lO4
inR
efs.
4,6
and
2,6,
resp
ectiv
ely.
The
avai
labl
eK
spva
lues
are
sum
mar
ized
inth
efo
llow
ing
tabl
e:
631631IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Sol
ubili
tyex
perim
ents
wer
eco
nduc
ted
aspH
titra
tions
ina
ther
mos
tate
dgl
ass
vess
elin
the
pHra
nge
from
2.8
to6.
8in
anat
mos
pher
eof
80%
CO 2/O
2.T
hega
sw
asfir
stpa
ssed
thro
ugh
anoz
one
gene
rato
rto
prod
uce
ozon
ein
the
gas
and
thus
stab
ilize
the
hexa
vela
ntst
ate
ofN
p.T
hega
sw
asth
enm
oist
ened
inw
ashi
ngfla
sks,
and
pass
edco
ntin
uous
lyth
roug
hth
eso
lutio
n.O
zone
was
show
nto
have
noef
fect
onth
eso
lid/li
quid
equi
libriu
m.
The
hexa
vela
ntst
ate
ofN
pw
asch
ecke
dby
mea
surin
gth
ere
dox
pote
ntia
lof
wor
king
solu
tions
usin
ga
Pt–
Ag/
AgC
lcom
bina
tion
elec
trod
e.T
heso
lidph
ase
was
prec
ipita
ted
from
0.02
mol
dm23
solu
tion
ofN
p~V
I!by
addi
tion
of0.
1m
oldm
23
NaH
CO 3
or0.
1m
oldm
23
NaO
H,
and
was
left
toeq
uilib
rate
with
the
solu
tion
for
2w
eeks
orm
ore.
The
npH
titra
tions
wer
epe
rfor
med
byad
ditio
nof
smal
lal
iquo
tsof
0.1
mol
dm2
3N
aOH
,0.
1m
oldm
23
NaH
CO 3
or0.
1m
oldm
23
HC
lO4.
The
pHw
asm
easu
red
byus
ing
com
bina
tion
glas
sel
ectr
odes~H
orib
a!w
hich
wer
eca
libra
ted
agai
nst
buffe
rso
lutio
nsw
ithpH
of4.
01an
d6.
86~bot
h6
0.01
!.T
hepH
and
nept
uniu
mco
ncen
trat
ion
wer
em
easu
red
once
per
wee
k,an
dth
eso
lubi
lity
data
wer
ead
opte
dw
hen
the
valu
esre
mai
ned
unch
ange
dfo
r2
wee
ksw
ithin
expe
rimen
tal
erro
r.P
hase
sepa
ratio
nw
asac
hiev
edby
cent
rifug
atio
nat
3000
rpm
and
ultr
afiltr
atio
nw
itha
filte
rof
220
nmpo
resi
ze.
The
conc
entr
atio
nof
Np~V
I!w
asde
term
ined
byliq
uid
scin
tilla
tion
coun
ting.
The
oxid
atio
nst
ate
ofN
p~V
I!w
asch
ecke
dby
spec
trop
hoto
met
ry~S
him
adzu
,U
V-3
100S!
.D
urin
gso
lubi
lity
expe
rimen
ts,
Np~V
!co
ncen
trat
ion
was
alw
ays,
2%of
the
tota
lnep
tuni
umco
ncen
trat
ion.
Sol
idph
ases
wer
ech
arac
teriz
edby
x-ra
ycr
ysta
llogr
aphy
~Rig
aku
RA
D-3
C!an
dph
otoa
cous
ticU
V-V
ISan
dF
TIR
spec
tros
copy
.F
orth
ela
tter
met
hod,
abou
t5
–10
mg
ofai
r-dr
ied
solid
phas
ew
asus
ed.
Sto
ckso
lutio
nof
NpO
221w
aspr
epar
edfr
omhi
ghly
pure
237 N
pO2
pow
der~
CE
A,
Fra
nce!.
The
latte
rw
asdi
ssol
ved
inco
ncen
trat
edH
NO 3,
the
resu
ltant
solu
tion
was
fum
edto
dryn
ess
afte
rad
ditio
nof
conc
entr
ated
HC
lO 4,an
dth
ere
sidu
ew
asdi
ssol
ved
in0.
1m
oldm
23
HC
lO4.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hors!
.S
olub
ility
prod
uct:
see
abov
e.
Ref
eren
ces:
1 G.
Mei
nrat
han
dT
.K
imur
a,In
org.
Chi
m.
Act
a204,
79~1
993!
.2 G
.M
einr
ath
and
T.
Kim
ura,
J.A
lloy
Com
pd.20
2,89
~199
3!.
3 Y.
Kat
o,T
.K
imur
a,Z
.Y
oshi
da,
and
N.
Nita
ni,
Rad
ioch
im.
Act
a74
,21
~199
6!.
Co
~1!
@5 ~2!
~3!
~4!
wa
the
at str
Na
et as a on Re
mi
su of Mi
J
, ter t
10C
.F
.N
ovak
and
K.
E.
Rob
erts
,M
ater
.R
es.
Soc
.S
ymp.
Pro
c.35
3,11
19~1
995!
.11
D.
B.
Tuc
ker,
E.
M.
Sta
ndife
r,H
.N
itsch
e,an
dR
.J.
Silv
a,La
ntha
nide
Act
inid
eR
es.
2,27
9~1
988!
.
6.3.
Sal
tsof
Dio
xoB
is„ca
rbon
ato…
Nep
tuna
te„V…„-3…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3;
7127
-86-
3#S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
Wat
er;
H 2O
;@7
732-
18-5#
K.
Uen
oan
dA
.S
aito
,R
adio
chem
.R
adio
anal
.Le
tt.22
,12
7–
33~1
995!
.
riabl
es:
Pre
pare
dB
y:
K:
293
/mol
dm2
3 :0.
05–
1.6
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NaN
pO2C
O3
at20
°Cin
Na 2C
O3
solu
tions
a
Na 2
CO
3
(c2
/mol
dm2
3 )N
aNpO
2CO
3
(104
c 1/m
oldm
23 )
0.05
0.68
8
0.07
0.79
5
0.1
1.18
0.15
2.44
0.2
8.53
0.3
20.4
0.4
32.3
0.6
97.0
1.2
160.
0
1.6
161.
0
quili
briu
mso
lidph
ase
was
NaN
pO 2C
O3,
@571
27-8
6-3#,
inal
lsol
utio
ns.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.P
ortio
nsof
asl
ight
lyac
idic
solu
tion
ntai
ning
5–
30m
gN
p~V!
wer
ead
ded
to5
–10
mL
Na
2CO
3
lutio
nof
the
desi
red
conc
entr
atio
n.T
hene
ptun
ium
ncen
trat
ion
was
smal
leno
ugh
not
toch
ange
the
carb
onat
enc
entr
atio
n.A
whi
tepr
ecip
itate
ofN
aNpO 2C
O3
was
tain
edan
dal
low
edto
stan
dfo
r1
–2
days
with
occa
sion
alm
ixin
gto
atta
ineq
uilib
rium
.T
hesa
tura
ted
solu
tions
wer
ece
ntrif
uged
,an
dth
ene
ptun
ium
conc
entr
atio
nde
term
ined
radi
omet
rical
ly.
The
solid
phas
esw
ere
anal
yzed
for
Np,
Na,
and
carb
onat
e.S
atur
ated
solu
tions
and
the
solid
phas
esco
ntai
ned
pent
aval
ent
nept
uniu
maf
ter
equi
libra
tion.
AH
NO
3so
lutio
nof
237 N
ppu
rified
byan
ion
exch
ange
was
heat
edfo
rse
vera
lhou
rsto
oxid
ize
Np
~IV
!to
Np~
V!/
Np~
VI!
,and
then
evap
orat
edto
dryn
ess.
The
resi
due
was
diss
olve
din
NH
2OH•H
Cl
solu
tion
toen
sure
the
pent
aval
ent
stat
eof
nept
uniu
m,
whi
chw
asch
ecke
dsp
ectr
opho
tom
etric
ally
.T
heso
dium
carb
onat
eus
edw
asa
reag
ent
grad
epr
oduc
t.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
632632 JIRI HALA
2lo
gK
sp
Tem
pera
ture
~K!
Ioni
cst
reng
th~m
oldm
23 !
Ref
eren
ce
11.0
060.
0729
8.1
06
10.2
260.
0229
8.1
0.1~N
aClO
4!4
10.2
860.
0429
8.1
0.1~N
aClO
4!6
10.1
460.
0429
8.1
1.0~N
aClO
4!2
10.1
060.
0329
8.1
1.0~N
aClO
4!6
10.7
60.
130
3.1
1.0~N
aClO
41N
a 2C
O3!
3
11.0
60.
132
3.1
1.0~N
aClO
41N
a 2C
O3!
3
10.4
560.
0429
8.1
3.0~N
aClO
4!6
10.5
629
3.1
3.0
5
11.0
660.
0629
8.1
5.0~N
aClO
4!6
The
solu
bilit
ypr
oduc
tofN
aNpO
2CO
3at
diffe
rent
ioni
cst
reng
ths
has
also
been
obta
ined
byca
lcul
atio
nus
ing
the
Pitz
erm
etho
d,w
ithve
rygo
odag
reem
ent
with
expe
rimen
tald
ata.
7,9,
10
The
equi
libriu
mso
lidph
ase
isth
ehy
drat
edsa
lt,N
aNpO
2CO
3•3.
5H2O
.T
his
hydr
ate
was
first
repo
rted
byV
olko
veta
l.,8
and
sinc
eth
enre
confi
rmed
asth
eeq
uilib
rium
solid
phas
ein
the
solu
bilit
yst
udie
sby
seve
rala
utho
rs.
2,5,
9Le
mire
3re
port
edth
eso
lidph
ase
tobe
the
trih
ydra
te,
NaN
pO2C
O3•
3H2O
,at
303.
1an
d32
3.1
K.
Thi
sis
inag
reem
ent
with
the
findi
ngof
Vol
kov
et
al.8
who
repo
rted
that
NaN
pO2C
O3•
3.5H
2Otu
rned
into
the
trih
ydra
teon
heat
ing
at30
3.1
K.S
ince
the
solid
phas
eex
ists
asa
hydr
ate,
the
solu
bilit
ypr
oduc
tmay
toa
cert
ain
exte
nt,
depe
ndon
the
num
ber
ofcr
ysta
lw
ater
mol
ecul
es,
part
icul
arly
athi
ghio
nic
stre
ngth
whe
reth
ede
crea
seof
wa
activ
ityis
not
negl
igib
le.7
At
high
erca
rbon
ate
ion
conc
entr
atio
ns,
NaN
pO 2CO
3•3.
5H2O
isth
erm
odyn
amic
ally
unst
able
,an
dits
slow
tran
sfor
mat
ion
toN
a 3NpO
2~C
O3) 2•xH
2Ota
kes
plac
e.3,6
No
te:
As
apa
rtof
nucl
ear
was
test
orag
epr
ojec
tat
Yuc
caM
ount
ain,
Nev
ada,
Tuc
ker
et
al.11
mea
sure
dth
eso
lubi
lity
ofN
aNpO 2
CO
3
ingr
ound
wat
erfr
omon
ew
ell.
Thi
sdo
cum
ent
has
not
been
com
pile
dfo
rth
isvo
lum
esi
nce
the
com
posi
tion
ofth
egr
ound
wat
erw
asno
defin
ed.
The
auth
ors
obta
ined2
log
Ksp
510
.36
0.5
at33
3.1
Kan
dat
ioni
cst
reng
thof
0.146
0.05
mol
dm2
3 .T
hem
easu
rem
ents
wer
epe
rfor
med
atpH
6.0
–8.
5,an
dth
eeq
uilib
rium
solid
phas
ew
asid
entifi
edas
NaN
pO2C
O3•
H2O
.
Ref
eren
ces:
1 K.
Uen
oan
dA
.S
aito
,R
adio
chem
.R
adio
anal
.Le
tt.22,
127
~197
5!.
2 L.M
aya,
Inor
g.C
hem
.22,
2093
~198
3!.
3 R.
J.Le
mire
,G
.D
.B
oyer
,an
dA
.B
.C
ampb
ell,
Rad
ioch
im.
Act
a61
,57
~199
3!.
4 G.
Mei
nrat
h,J.
Rad
ioan
al.
Nuc
l.C
hem
.Le
tt.186,
257
~199
4!.
5 I.G
rent
he,
P.
Rob
ouch
,an
dP
.V
itorg
e,J.
Less
-Com
mon
Met
als
122,
225
~198
6!.
6 V.
Nec
k,W
.R
unde
,J.
I.K
im,
and
B.
Kan
ella
kopu
los,
Rad
ioch
im.
Act
a65
,29
~199
4!;
J.A
lloys
Com
pds.2
25,
295
~199
5!.
7 V.
Nec
k,T
.F
angh
a¨ nel
,G
.R
udol
f,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a69,
39~1
995!
.8 Y
u.F
.V
olko
v,G
.I.
Vis
yash
chev
a,an
dI.
I.K
apsh
ukov
,R
adio
khim
iya
19,
319
~197
7!;
Sov
.R
adio
chem
.19,
263
~197
7!.
9 W.
Run
de,
M.
P.
Neu
,an
dD
.L.
Cla
rk,
Geo
chim
Cos
moc
him
.A
cta
60,
2065
~199
6!.
Co
~1!
@5 ~2!
~3!
Va
T/
c 2 a E Me
Iso
co so co co ob
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Kspo
5@N
a1#@
NpO
21#@
CO
322#g
~Na1
!g~N
pO21
!g~C
O322
!.
Sin
cem
easu
rem
ents
wer
epe
rfor
med
atco
nsta
ntco
ncen
trat
ion
ofN
a1
ions
,th
eco
nsta
ntKsp*
was
defin
edas
Ksp*
5K
spo$@
Na1
#g~N
a1!g
~NpO
21!g
~CO
322!%
21 5
@NpO
21#@
CO
322#,
and
foun
dto
be102
(10.
146
0.04
) .T
hein
crea
sed
solu
bilit
yof
NaN
pO 2C
O3
at@C
O322
#.33
102
4m
oldm
23
was
inte
rpre
ted
byth
eau
thor
sin
term
sof
the
form
atio
nof
NpO 2
CO
32,
NpO
2~C
O3!
232,
and
NpO
2~C
O3!
352co
mpl
exes
for
whi
chth
ere
spec
tive
over
all
stab
ility
cons
tant
sw
ere
calc
ulat
edto
be104.
496
0.06
,10
7.11
60.
07,
and
108.
536
0.09
.C
ompl
exat
ion
ofN
pO21
with
HC
O32
ion
was
not
obse
rved
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.N
aNpO 2C
O3•
3.5H
2Ow
aspr
epar
edin
uin
tube
sby
addi
tion
ofN
a 2CO
3in
a1:
1m
ole
ratio
toa
O21
solu
tion.
The
tube
sw
ere
cent
rifug
ed,
and
the
pern
atan
tw
asre
plac
edw
ith1
mol
dm23
NaC
lO4
solu
tion.
eso
lidw
assu
spen
ded
and
cent
rifug
edag
ain,
and
this
oced
ure
was
repe
ated
two
mor
etim
es.
The
nal
iquo
tsof
the
rbon
ate
stoc
kso
lutio
nw
ere
intr
oduc
edto
cove
ra
rang
eof
ncen
trat
ions
upto
0.1
mol
dm23 .
The
mix
ture
sw
ere
uilib
rate
dfir
stfo
r7
days
and
then
for
anad
ditio
nal4
day
riod.
The
latte
rdi
dno
tpr
oduc
esi
gnifi
cant
chan
ges
inth
eco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
.S
ome
ofth
etu
bes
reth
ensa
tura
ted
with
N 2ga
sco
ntai
ning
1%C
O 2,se
aled
deq
uilib
rate
dfo
r10
days
.A
fter
cent
rifug
atio
n,ne
ptun
ium
sde
term
ined
inth
esa
tura
ted
solu
tions
radi
omet
rical
ly,
1#
was
dete
rmin
edby
usin
ga
glas
sel
ectr
ode
fille
dw
itha
01m
oldm
23
H1
11.
0m
oldm
23 N
aClO
4so
lutio
n.T
hem
posi
tion
ofth
eso
lidph
ases
was
dete
rmin
edby
chem
ical
alys
isan
dx-
ray
diffr
actio
n.
Sto
ckso
lutio
n,0.
0665
mol
dm23 ,
ofN
p~V
!in
0.1
mol
dm2
3
HC
lO4
was
prep
ared
from
high
purit
yN
pO 2~O
RN
L!.T
heox
ide
was
diss
olve
din
hot
conc
entr
ated
HN
O3,
the
solu
tion
was
evap
orat
edto
dryn
ess,
resi
due
diss
olve
din
conc
entr
ated
HC
lO4,
the
solu
tion
evap
orat
ed,a
ndre
sidu
edi
ssol
vein
wat
er.F
rom
this
solu
tion
NpO
2OH
was
prec
ipita
ted
and
diss
olve
din
0.1
mol
dm2
3H
ClO
4.T
heso
dium
carb
onat
eus
edw
asa
reag
ent
grad
epr
oduc
t.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
1K
~aut
hor!.
Sol
ubili
typr
oduc
t:se
eab
ove.
633633IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
carb
onat
odi
oxon
eptu
nate
v~V
!;N
aNpO
2CO
3;@5
7127
-86-
3#~2
!S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
L.M
aya,
Inor
g.C
hem
.22,
2093
–5~
1983
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3(C
O32
2):
1.53
102
6–
0.09
3c 3
/mol
dm2
3 :1.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NaN
pO2C
O3
at25
°Cin
Na 2C
O3
solu
tions
a
2lo
g @C
O322
#b2
log @
H1
#b2
log @
Np #
b2
log @
CO
322#b,
c2
log @
H1
#b,c
2lo
g @N
p #b,
c
5.80
8.08
4.32
5.52c
6.96
4.87
5.71
8.21
4.36
4.63c
7.21
5.21
4.44
8.99
5.22
4.06c
7.51
5.41
3.98
9.31
5.40
3.52c
7.79
5.52
3.54
9.62
5.48
2.95c
8.08
5.42
3.05
9.94
5.52
4.06c
7.51
5.41
2.71
10.1
55.
383.
52c7.
795.
52
2.39
10.3
75.
132.
95c8.
085.
42
2.09
10.5
54.
89
1.64
10.7
24.
55
1.03
10.9
93.
50
a All
solu
tions
cont
aine
d1.
0m
oldm2
3N
aClO
4,an
dw
ere
ineq
uilib
rium
with
NaN
pO 2C
O3•
3.5H
2O,
@#,
asth
eso
lidph
ase.
b Equ
ilibr
ium
conc
entr
atio
ns,
inm
oldm2
3 .c M
easu
rem
ents
carr
ied
out
atpa
rtia
lpr
essu
reof
CO
2of
102
2.02
7at
m~9
22P
a!in
orde
rto
eval
uate
poss
ible
effe
cton
NaN
pO 2CO
3
solu
bilit
yof
hydr
ogen
carb
onat
eco
mpl
exat
ion
ofN
p~V
!.
Add
ition
alin
form
atio
n:T
heso
lubi
lity
data
wer
ean
alyz
edby
the
auth
ors
byus
ing
ano
nlin
ear
leas
t-sq
uare
spr
ogra
mco
nsid
erin
gdi
ssol
utio
nof
NaN
pO2C
O3,
hydr
olys
isof
NpO
21to
form
NpO
2OH
,an
dth
efo
rmat
ion
ofca
rbon
ato
com
plex
esof
NpO
21.
For
the
diss
olut
ion
reac
tion
NaN
pO2C
O3~
s!�
Na1
1N
pO21
1C
O322
the
solu
bilit
ypr
oduc
tis
Me
Iso
sit
Np
su Th
pr ca co eq pe Np
we
an wa
@H 0.0
co an
J
.16
.S
odiu
mca
rbon
ato
diox
onep
tuna
te~V!–
sodi
umpe
rchl
orat
e–
carb
ondi
oxid
e–
wat
ersy
stem
.Le
gend
toth
efig
ure:
~squ
ares!
asur
emen
tsca
rrie
dou
tby
cont
rolli
ngto
talc
arbo
nate
conc
entr
atio
n;~c
ircle
san
dtr
iang
les!m
easu
rem
ents
carr
ied
outa
tpar
tialp
ress
ure
CO
2of
0.97
and
0.11
–0.
15at
m,
resp
ectiv
ely.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
perim
enta
ltec
hniq
ueus
edw
asno
tde
scrib
ed.
The
com
pile
rsu
mes
that
mea
sure
men
tsw
ere
carr
ied
out
ina
man
ner
ilar
toth
atus
edby
the
auth
ors
inth
est
udy
ofth
elu
bilit
yof
UO
2CO
31an
dP
uO2C
O3.
2
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Ref
eren
ces:
1 I.G
rent
he,D
.Fer
ri,F
.Sal
vato
re,a
ndG
.Ric
cio,
J.C
hem
.Soc
.,D
alto
nT
rans
.24
39~1
984!
.2 P
.Rob
ouch
and
P.V
itorg
e,In
org.
Chi
m.A
cta
140,
239
~198
7!.
634634 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3;
@571
27-8
6-3#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mhy
drog
enca
rbon
ate;
NaH
CO
3;@1
44-5
5-8#
~4!
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
~5!
Wat
er;
H 2O
;@7
732-
18-5#
I.G
rent
he,P
.Rob
ouch
,and
P.V
itorg
e,J.
Less
-Com
mon
Met
als
122,
225
–31
~198
6!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3pa
rtia
lpre
ssur
eof
CO 2/a
tm~k
Pa!
:0.
11–
0.15
~10.
8–
14.7!
and
0.97
~95.
15!
c 3/m
oldm
23 :
3.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofN
aNpO
2CO
3at
20°C
asa
func
tion
ofeq
uilib
rium
CO 322
ion
conc
entr
atio
n
The
resu
ltsw
ere
repo
rted
ingr
aphi
calf
orm
only~see
Fig
.16
!.
Add
ition
alin
form
atio
n:T
heso
lubi
lity
ofN
aNpO
2CO
3in
carb
onat
eco
ntai
ning
3.0
mol
dm23
solu
tions
ofN
aClO 4
wer
ein
terp
rete
dby
the
auth
ors
byco
nsid
erin
gN
pO21
,N
pO2C
O32
,N
pO2~
CO
3!232
,an
dN
pO2~
CO
3!352
asso
lutio
nsp
ecie
s,an
dhy
drat
edN
aNpO
2CO
3an
dN
a 3N
pO2~
CO
3!2
asth
eeq
ui-
libriu
mso
lidph
ases
.T
heov
eral
lsta
bilit
yco
nsta
nts
ofth
eca
rbon
atoc
ompl
exes
ofN
p~V
!w
ere
repo
rted
tobe
105.09
,10
8.15
,an
d10
10.4
6 ,re
spec
tivel
y,an
dth
eso
lubi
lity
prod
ucts
ofN
aNpO 2C
O3
and
Na 3
NpO
2~C
O3!
2as
102
10.5
6an
d10
212
.44 ,
resp
ectiv
ely.
FIG
me
of Me
Ex
as sim
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
er
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
heso
lubi
litie
sw
ere
mea
sure
din
2CO
3/N
aClO
4so
lutio
nsw
ithin
itial
ioni
cst
reng
thof
1.0
ldm
23 .
The
solu
tions
wer
epr
epar
edus
ing
CO
2-fr
eew
ater
ich
was
prep
ared
bybo
iling
and
purg
ing
with
argo
n.E
xces
slid
was
equi
libra
ted
with
solu
tions
ofth
ede
sire
dm
posi
tion
ingl
ass
tube
sse
aled
with
aru
bber
gask
et.
The
esw
ere
subm
erge
din
ath
erm
osta
ted
bath
for
perio
dsof
era
ngin
gfr
om2
to4
wee
ks.
No
evap
orat
ion
loss
esw
ere
tect
edev
enaf
ter
seve
ralw
eeks
at75
°C.
Afte
req
uilib
ratio
n,dr
ogen
ion
conc
entr
atio
nw
asde
term
ined
atth
ete
mpe
ratu
reth
eex
perim
ent
usin
ga
mic
ropH
prob
ew
ith4.
0m
oldm23
Cls
atur
ated
with
AgC
las
fillin
gso
lutio
n.T
hepr
obe
was
libra
ted
atea
chte
mpe
ratu
reag
ains
tso
lutio
nsof
know
nH
1
OH
2io
nco
ncen
trat
ion
in1.
0m
oldm2
3N
aClO
4.A
liquo
tsth
esa
tura
ted
solu
tions
wer
ew
ithdr
awn
with
asy
ringe
uipp
edw
itha
0.2m
mfil
ter,
and
the
conc
entr
atio
nof
ptun
ium
was
dete
rmin
edra
diom
etric
ally
.T
oth
isai
m,
Np
~V!
sre
duce
dto
Np~IV
!by
Fe~
II!
sulfa
mat
e,th
eso
lutio
nw
asid
ified
to6
mol
dm2
3H
Cl,
Np~
IV!
was
extr
acte
din
to10
%m
ine
336
inxy
lene
,an
dba
ckex
trac
ted
into
0.1
mol
dm2
3
l.S
ampl
esw
ere
then
evap
orat
edto
dryn
ess
and
aco
unte
d.co
very
ofN
pin
this
proc
edur
ew
asat
leas
t95
%.
Sol
idas
esw
ere
iden
tified
byx-
ray
diffr
actio
n.
Hyd
rate
dN
aNpO
2CO
3an
dN
a 3N
pO2~
CO
3!2
wer
epr
epar
edac
cord
ing
toR
efs.
1an
d2.
Pow
der
x-ra
ydi
ffrac
tion
patte
rnof
the
solid
sw
ere
inag
reem
ent
with
thos
ere
port
edfo
rN
aNpO
2CO
3•3H
2Oan
dN
a 3NpO
2~C
O3!
2•xH
2O.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
typr
oduc
t:se
eab
ove.
Ref
eren
ces:
1 Yu.
F.
Vol
kov,
G.
I.V
isya
shch
eva,
and
I.I.
Kap
shuk
ov,
Rad
iokh
imiy
a19,
319
~197
7!.
2 Yu.
F.
Vol
kov,
G.
I.V
isya
shch
eva,
S.
V.
Tom
ilin,
I.I.
Kap
shuk
ov,
and
A.
G.
Ryk
ov,
Rad
iokh
imiy
a23,
248
~198
1!.
635635IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3;
@571
27-8
6-3#;
orso
dium
bis~c
arbo
nato!
diox
onep
tuna
te~V!;
Na 3
NpO
2~C
O3!
2;@6
4438
-44-
4#~2
!S
odiu
mca
rbon
ate;
Na
2CO
3;@4
97-1
9-8#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
R.J
.Lem
ire,G
.D.B
oyer
,and
A.B
.Cam
pbel
l,R
adio
chim
.Act
a61
,57
–63
~199
3!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:30
3,32
3,an
d34
8E
quili
briu
mco
ncen
trat
ion
ofth
eC
O322
ion/
mol
dm2
3 :102
6–
0.1
c 3/m
oldm
23 :
vary
ing
conc
entr
atio
nto
mai
ntai
nio
nic
stre
ngth
of1.
0m
oldm
23
inN
a 2C
O3–
NaC
lO4
solu
tions
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofN
aNpO
2CO
3or
Na 3
NpO
2~C
O3!
2at
thre
edi
ffere
ntte
mpe
ratu
res
asa
func
tion
ofeq
uilib
rium
CO
322io
nco
ncen
trat
ion
The
solu
bilit
yof
NaN
pO2C
O3
orN
a 3N
pO2~
CO
3!2
asa
func
tion
ofeq
uilib
rium
CO 322
ion
conc
entr
atio
nw
asre
port
edin
grap
hica
lfo
rmon
ly.T
heau
thor
san
alyz
edth
eso
lubi
lity
data
bya
leas
t-sq
uare
spr
oced
ure
cons
ider
ing
two
mod
els
diffe
ring
inth
eso
lidph
ases
,i.e
.,ei
thhy
drat
edN
aNpO
2CO
3~m
odel
A!or
am
ixtu
reof
hydr
ated
NaN
pO 2C
O3
and
Na 3
NpO
2~C
O3!
2~m
odel
B!.
Nep
tuni
umsp
ecie
sin
the
satu
rate
dso
lutio
nsw
ere
cons
ider
edto
beN
pO21
,N
pO2C
O32
,N
pO2~
CO
3!232
,an
dN
pO2~
CO
3!352
,w
hile
NpO
2~O
H! ~
aq!w
asno
tfou
ndto
bea
sign
ifica
ntsp
ecie
s.T
heco
nsta
nt
Ksp*
5@N
pO21
#@C
O322
#5K
sp@N
a1#g
~Na1
!g~C
O322
!g~N
pO21
!
was
calc
ulat
edfo
rdi
ffere
ntte
mpe
ratu
res
and
mod
els.
At
30an
d50
°C,
Ksp*
was
calc
ulat
edto
be102
(10.
760.
1)an
d10
2(1
1.06
0.1)
,re
spec
-tiv
ely,
irres
pect
ive
ofth
em
odel
used
.A
t75
°C,
Ksp*
was
calc
ulat
edto
be102
(10.
760.
2)~m
odel
Aw
ithN
pO2C
O32
asso
lutio
nsp
ecie
s!,10
2(1
0.86
0.2)
~mod
elB
with
NpO
2CO
32an
dN
pO2~
CO
3!352
asso
lutio
nsp
ecie
s!,an
d10
2(1
1.36
052)
~mod
elB
with
NpO
2CO
32an
dN
pO2~
CO
3!232
asso
lutio
nsp
ecie
s!.
Add
ition
alin
form
atio
n:A
t30
°C,
the
min
imum
nept
uniu
mso
lubi
lity
(;10
26
mol
dm2
3 )oc
curs
atfr
eeca
rbon
ate
conc
entr
atio
nof
abou
t10
23
mol
dm2
3 .F
orin
itial
carb
onat
eco
ncen
trat
ion
betw
een
0.01
and
0.1
mol
dm2
3th
ein
itial
solid
,ei
ther
hydr
ated
NaN
pO 2C
O3
orhy
drat
edN
a 3N
pO2~
CO
3!2,
was
reco
vere
das
the
prim
ary
solid
afte
rha
ving
been
cont
acte
dw
ithth
eso
lutio
nsfo
rm
ore
than
1m
onth
.In
afe
wex
perim
ents
usin
ghy
drat
edN
a3N
pO2~
CO
3!2
asth
ein
itial
solid
,at
leas
tpa
rtia
lcon
vers
ion
ofth
eso
lidoc
curr
ed:
Na 3
NpO
2~C
O3!
2•xH
2O�
NaN
pO2C
O3•
yH2O
12N
a11
CO
3221
(y2
x)H
2O
At
50°C
,N
a 3N
pO2~
CO
3!2
pred
omin
ated
asth
eso
lidph
ase.
Als
oat
75°C
and
at1.
0m
oldm
23
Na1
,th
est
able
solid
had
ara
tioof
Na:
Np.
1.G
ener
ally
,fo
rto
tal
carb
onat
eco
ncen
trat
ion
.0.
005
mol
dm2
3 ,on
lyhy
drat
edN
a 3NpO
2~C
O3!
2w
asid
entifi
edby
x-ra
ydi
ffrac
tion,
alth
ough
Na 8~
NpO
2!2~
CO
3!5
was
pres
ent
inso
me
sam
ples
.
Me
Iso
Na
mo
wh
so co tub
tim de hy of Na
ca or of eq ne wa
ac ala
HC
Re
ph
J
red
FIG
.17
.S
odiu
mca
rbon
ato
diox
onep
tuna
te~V!–
sodi
umpe
rchl
orat
e–
carb
ondi
oxid
e–
wat
ersy
stem
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials:
eso
lubi
lity
was
mea
sure
dby
radi
omet
ricpH
titra
tion
ina
sed
ther
mos
tate
dgl
ass
vess
el.
The
solid
phas
ew
asec
ipita
ted
inth
eve
ssel
from
a0.
02m
oldm2
3N
pO21
lutio
nin
0.1
mol
dm2
3H
ClO
4by
addi
tion
of0.
05ld
m2
3N
a 2C
O3.
The
solu
tion
with
the
prec
ipita
tew
asow
edto
stan
dfo
rab
out
3w
eeks
.T
hen
pHw
asad
just
edby
ding
solu
tions
ofei
ther
0.1
mol
dm23
HC
lO4
or0.
05ld
m2
3N
a 2C
O3.
The
solid
–liq
uid
phas
eeq
uilib
rium
ata
enpH
was
esta
blis
hed
with
in1
–3
days
.E
quili
briu
mlu
bilit
yw
asat
tain
edfr
ombo
thsu
per-
and
unde
rsat
urat
edlu
tions
toen
sure
that
are
prod
ucib
lest
eady
stat
eha
dbe
enta
blis
hed
inth
ein
vest
igat
edpH
rang
eof
6–
9.A
defin
edos
pher
ew
asm
aint
aine
dby
aco
ntin
uous
flow
ofa
cert
ified
sm
ixtu
reof
N 2co
ntai
ning
1%C
O 2th
roug
hth
eso
lutio
ner
moi
sten
ing
the
gas
inw
ashi
ngfla
sks.
Sam
ples
from
the
uid
phas
ew
ere
with
draw
naf
ter
ultr
afiltr
atio
nth
roug
ha
200
pore
size
filte
r~Adv
ante
c!.D
eter
min
atio
nof
Np~V
!in
the
tura
ted
solu
tions
was
carr
ied
out
byasp
ectr
omet
ry,
liqui
din
tilla
tion
coun
ting,
and
spec
trop
hoto
met
rical
lyat
981.
3nm
.e
pHw
asde
term
ined
acco
rdin
gto
Ref
.1.
Sol
idph
ases
rein
vest
igat
edby
usin
gx-
ray
pow
der
diffr
actio
n.
Isot
opic
ally
pure
237 N
p~C
EA
,F
ranc
e!w
asus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hor!.
Sol
ubili
typr
oduc
t:se
eab
ove.
Ref
eren
ces:
1 G.
Mei
nrat
han
dJ.
I.K
im,
Rad
ioch
im.
Act
a52Õ5
3,29
~199
1!.
636636 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3;
@571
27-8
6-3#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
G.
Mei
nrat
h,J.
Rad
ioan
al.
Nuc
l.C
hem
.Le
tt.186,
257
–72
~199
4!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8p
2~p
artia
lpre
ssur
e!/%
:1
c 3/m
oldm
23 :
0.1
~ioni
cst
reng
th!
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofN
aNpO
2CO
3at
25°C
asa
func
tion
ofpH
The
solu
bilit
yof
NaN
pO2C
O3
at25
°Can
dat
ioni
cst
reng
thof
0.1
mol
dm23
ClO
42an
d1%
part
ialp
ress
ure
ofC
O2
asa
func
tion
ofpH
was
repo
rted
ingr
aphi
cal
form~
see
Fig
.17
!.U
nder
the
cond
ition
sus
ed,
i.e.,
pH,9
and
max
imum
equi
libriu
mca
rbon
ate
ion
conc
en-
trat
ion
ofab
out
1022
mol
dm2
3 ,th
eau
thor
obta
ined
for
the
solu
bilit
yof
NaN
pO 2CO
3th
eeq
uatio
n
S5K
sp@N
a1#2
1 @C
O322
#21 $
11b
1@C
O322
#1b
2@C
O322
#2%
whe
reK
sp5
@Na1
#@N
pO21
#@C
O322
#510
2~1
0.22
60.
02! ,
and
b1
and
b2
are
over
all
stab
ility
cons
tant
sof
the
NpO 2C
O32
and
NpO
2~C
O3!
232
com
plex
esw
hich
wer
eca
lcul
ated
tobe
102
(4.5
260.
02)
and
,10
26.
60,
resp
ectiv
ely.
Add
ition
alin
form
atio
n:E
quili
briu
mca
rbon
ate
ion
conc
entr
atio
nw
asob
tain
edfr
omth
eH
enry
cons
tant
,dis
soci
atio
nco
nsta
nts
ofca
rbon
icac
id,a
ndth
em
easu
pH.
Hyd
roly
sis
ofN
p~V!
was
foun
dto
bein
sign
ifica
ntun
der
the
cond
ition
sus
ed.
Me
Th
clo
pr so mo
all
ad mo
giv
so so es atm
ga aft
liq nm sa sc Th
we
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mol
dm2
3N
aCl,
and
at@C
O322
#.(1
021.
9 210
21.
5 )m
oldm
23 ,
the
equi
libriu
mso
lidph
ase
was
Na
3NpO
2~C
O3!
2,@6
4438
-44-
4#.T
hein
itial
solid
used
for
mea
sure
men
tsw
asN
aNpO
2CO
3,an
din
solu
tions
with
high
erio
nic
stre
ngth
and
cont
aini
nghi
gher
CO
322co
ncen
trat
ion,
itw
asco
nver
ted
toN
a 3NpO
2~C
O3!
2w
ithin
10da
ys.
Inev
alua
ting
the
solu
bilit
yda
ta,
the
mea
sure
dpH
valu
esat
ioni
cst
reng
ths
.0.
1m
oldm
23
wer
eco
rrec
ted
for
liqui
dju
nctio
npo
tent
ials
,an
dap
pare
ntpr
otol
ysis
cons
tant
ofw
ater
was
then
calc
ulat
edfr
omth
eco
rrec
ted
valu
esan
dfr
omlit
erat
ure
valu
esof
wat
erac
tivity
.The
equi
libriu
mco
ncen
trat
ion
ofC
O322
ion
was
eval
uate
dfr
omth
eH
enry
cons
tant
and
diss
ocia
tion
cons
tant
sof
carb
onic
acid
whi
chw
ere
dete
rmin
edby
pote
ntio
met
rictit
ratio
nfo
rea
chpa
rtic
ular
ioni
cst
reng
th.
FIG
.18
.S
odiu
mca
rbon
ato
diox
onep
tuna
te~V!–
sodi
umch
lorid
e–
carb
ondi
oxid
e–
wat
ersy
stem
.
637637IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3
;@5
7127
-86-
3#;or
sodi
umbi
s~car
bona
to!di
oxon
eptu
nate~V
!;N
a 3N
pO2~
CO
3!2;
@644
38-4
4-4#
~2!
Car
bon
diox
ide;
CO 2
;@1
24-3
8-9#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;
@760
1-89
-0#;
orS
odiu
mch
lorid
e;N
aCl;@
7647
-14-
5#~4
!W
ater
;H 2
O;
@773
2-18
-5#
V.
Nec
k,W
.R
unde
,J.
I.K
im,
and
B.
Kan
ella
kopu
los,
Rad
ioch
im.
Act
a65,
29–
37,~
1994
!,J.
Allo
ysC
ompd
s.22
5,29
5–
302~
1995
!.
Var
iabl
es:
Pre
pare
dB
y:
T/K
:29
8p
2~p
artia
lpre
ssur
e!/%
:0.
03~3
1P
a!in
NaC
lO4
solu
tions
;1.
0~1
.03
kPa!
inN
aCls
olut
ions
c 3/m
oldm
23 :
0.1
–5.
0(N
aClO 4
);5.
0~N
aCl!
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NaN
pO2C
O3
and
Na 3
NpO
2~C
O3!
2at
25°C
asa
func
tion
ofca
rbon
ate
ion
conc
entr
atio
nat
diffe
rent
ioni
cst
reng
ths
The
solu
bilit
yof
NaN
pO2C
O3
and
Na 3
NpO
2~C
O3!
2as
afu
nctio
nof
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
nw
asre
port
edin
grap
hica
lfo
rm~s
eeF
ig.
18!.
By
usin
gno
nlin
ear
leas
t-sq
uare
san
alys
is,
the
follo
win
gva
lues
wer
eob
tain
edfo
rth
eso
lubi
lity
prod
ucts
ofN
aNpO
2CO
3an
dN
a 3N
pO3~
CO
3!2,
and
the
over
alls
tabi
lity
cons
tant
sof
the
NpO 2~C
O3)
n12
2n
com
plex
es:
Ioni
cst
reng
th~m
oldm
23 !
log
Ksp
,1a
log
Ksp
,3a
log
b1
log
b2
log
b3
02
11.0
060.
07b
214
.326
0.15
b
0.1(
NaC
lO4)
210
.286
0.04
4.58
60.
046.
606
0.07
~,6.
8!
1.0(
NaC
lO4)
210
.106
0.03
212
.236
0.15
4.50
60.
046.
966
0.06
8.67
60.
09
3.0(
NaC
lO4)
210
.456
0.04
212
.596
0.10
4.76
60.
047.
696
0.07
10.3
060.
09
5.0(
NaC
lO4)
211
.066
0.06
213
.576
0.11
5.00
60.
058.
296
0.09
11.4
760.
08
5.0
~NaC
l!c2
10.6
360.
112
12.4
860.
23
a Ksp
,15
@Na1
#@N
pO21
#@C
O32 #;
Ksp
,35
@Na1
#3@N
pO21
#@C
O32 #2
.b T
herm
odyn
amic
solu
bilit
ypr
oduc
t,ob
tain
edby
the
auth
ors
from
the
spec
ific
inte
ract
ion
theo
ry.
Cor
rect
edfo
rth
efo
rmat
ion
ofN
p~V
!ch
loro
com
plex
es.
Add
ition
alin
form
atio
n:T
hein
crea
sein
the
NaN
pO 2C
O3
solu
bilit
yat
high
erca
rbon
ate
ion
conc
entr
atio
nsor
pHw
asas
crib
edby
the
auth
ors
toth
efo
rmat
ion
ofth
eN
pO2~
CO
3) n1
22
nco
mpl
exes
.In
0.1
mol
dm23
NaC
lO4,
NaN
pO2C
O3
was
foun
dto
beth
est
able
solid
phas
eov
erth
ew
hole
CO
322
conc
entr
atio
nra
nge
stud
ied.
In1.
0m
oldm2
3N
aClO
4at
@CO
322#.
0.5
mol
dm2
3 ,an
din
3.0
and
5.0
mol
dm23
NaC
lO4,
asw
ella
sin
5.0
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NaN
pO2C
O3
;71
27-8
6-3#
Car
bon
diox
ide;
CO 2
;@1
24-3
8-9#
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#W
ater
;H 2
O;
@773
2-18
-5#
W.
Run
de,
M.
P.
Neu
,an
dD
.L.
Cla
rk,
Geo
chim
.C
osm
ochi
m.
Act
a60
,20
65–
73~1
996!
.
riabl
es:
Pre
pare
dB
y:
K:
296
~par
tialp
ress
ure!/at
m:
0.01
~981
Pa!
/mol
dm2
3 :0.
1an
d3.
0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NaN
pO2C
O3
at23
°Cas
afu
nctio
nof
carb
onat
eio
nco
ncen
trat
ion
inN
aCls
olut
ions
eso
lubi
lity
ofN
aNpO
2CO
3as
afu
nctio
nof
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
n,in
the
rang
eof
@CO
322#
from
102
7to
21
mol
dm2
3 ,w
asre
port
edin
grap
hica
lfor
mon
ly.
By
usin
gno
nlin
ear
leas
t-sq
uare
san
alys
is,
the
follo
win
gva
lues
wer
eob
tain
edth
eso
lubi
lity
prod
uct
ofN
aNpO
2CO
3,an
dth
eov
eral
lsta
bilit
yco
nsta
nts
(b
n)
ofth
eN
pO2~
CO
3) n1
22
nco
mpl
exes
:
NaC
l(c
3/m
oldm
23 )
log
Ksp
alo
gb
1lo
gb
2lo
gb
3
0.1
210
.46
0.2
4.86
0.1
3.0
29.
460.
24.
360.
17.
160.
29.
260.
2
sp5
@Na1
#@N
pO21
#@C
O322
#.
ditio
nali
nfor
mat
ion:
eso
lidph
ases
wer
efo
und
tobe
NaN
pO 2CO
3•xH
2Oan
dN
a 3NpO
2~C
O3) 2•xH
2Oat
@CO
322#,
102
3an
d.
102
3m
oldm
23 ,
resp
ec-
ely.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
eso
lubi
lity
mea
sure
men
tsw
ere
perf
orm
edin
acl
osed
rmos
tate
dgl
ass
vess
elfil
led
with
argo
nga
sco
ntai
ning
0.03
1%C
O 2.
The
solid
sw
ere
prep
ared
byad
ditio
nof
0.1
mol
23
Na 2
CO
3to
anac
idic
0.01
mol
dm2
3N
pO21
solu
tion
ntai
ning
the
desi
red
conc
entr
atio
nof
NaC
l.T
heso
lidph
ases
real
low
edto
age
for
seve
ralw
eeks
inco
ntac
tw
ithth
elu
tion
until
pHan
dth
eN
p~V!
conc
entr
atio
nin
the
solu
tion
did
not
chan
ge.
The
pHof
each
solu
tion
was
adju
sted
byad
ding
Na 2C
O3
/NaC
lor
NaH
CO 3
/NaC
lsol
utio
n,an
dw
asm
easu
red
usin
ga
com
bina
tion
glas
sel
ectr
ode
~Orio
n,R
OS
S!w
hich
was
calib
rate
dag
ains
tfiv
est
anda
rdbu
ffer
solu
tions
and
eigh
tN
aCls
olut
ions
ofkn
own
H1or
OH
2co
ncen
trat
ion.
Afte
rfil
trat
ion
thro
ugh
a45
0nm
pore
size
filte
r,th
eN
p~V
!co
ncen
trat
ion
inth
esa
tura
ted
solu
tion
was
dete
rmin
edra
diom
etric
ally
byliq
uid
scin
tilla
tion
coun
ting,
disc
rimin
atin
gth
e23
7 Np
aac
tivity
from
the
over
lapp
ing
taili
ngb
activ
ityof
the
233 P
ada
ught
er,
and
spec
trop
hoto
met
rical
ly.
The
solid
phas
esw
ere
char
acte
rized
byx-
ray
pow
der
diffr
actio
n.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
typr
oduc
t:se
eab
ove.
638638 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
ym
easu
rem
ents
wer
epe
rfor
med
ina
clos
edth
erm
osta
ted
glas
sve
ssel
fille
dw
ithar
gon
gas
cont
aini
ng0.
03or
1%C
O 2.
The
gas
mix
ture
was
allo
wed
topa
ssth
roug
hth
eve
ssel
durin
gth
esa
mpl
ing
and
pHad
just
men
tw
hile
durin
gst
andi
ngpe
riods
the
vess
elw
asfil
led
with
the
gas
mix
ture
and
clos
ed.
Inea
chex
perim
ent,
som
e50
mg
Np
~V!
~;0.
002
mol
dm2
3 !w
asus
edin
50m
LH
ClO 4
/NaC
lO4
orH
Cl/N
aCl
solu
tion
~pH
3!at
the
desi
red
ioni
cst
reng
th.
The
oxid
atio
nst
ate
ofN
p~V!
inth
est
artin
gso
lutio
nw
asco
nfirm
edsp
ectr
opho
tom
etric
ally
inth
evi
sibl
ean
dne
arIR
regi
on.
The
pHof
each
solu
tion
was
rais
edto
8.0
–8.
5by
addi
ngN
aHC
O 3/N
aClO
4or
NaH
CO 3
/NaC
lsol
utio
nto
prec
ipita
teN
aNpO
2CO
3w
hich
was
then
left
for
seve
rald
ays
for
equi
libra
tion.
The
nth
eso
lubi
lity
mea
sure
men
tsw
ere
perf
orm
edby
adju
stin
gth
ede
sire
dpH
inth
era
nge
from
5.9
to9.
9,by
step
wis
ead
ding
eith
erH
ClO 4/N
aClO
4or
NaH
CO 3
/NaC
lO4
solu
tion,
orH
Cl/N
aClo
rN
aHC
O 3/N
aCl
solu
tion.
The
equi
libriu
mat
each
pHw
asco
nfirm
edby
dete
rmin
ing
pHan
dN
pco
ncen
trat
ion
inth
eso
lutio
nun
tilco
nsta
ntva
lues
wer
ere
ache
d.T
his
was
atta
ined
with
in1
–3
days
depe
ndin
gon
pHan
dio
nic
stre
ngth
.A
fter
filtr
atio
nth
roug
ha
200
nmpo
resi
zefil
ter,
the
Np
~V!
conc
entr
atio
nin
the
satu
rate
dso
lutio
nw
asde
term
ined
radi
omet
rical
lyby
liqui
dsc
intil
latio
nco
untin
g,di
scrim
inat
ing
the23
7 Np
aac
tivity
from
the
over
lapp
ing
taili
ngb
activ
ityof
the
233 P
ada
ught
er.
Aco
mbi
natio
ngl
ass
elec
trod
e~RO
SS
,O
rion!
was
used
for
pHm
easu
rem
ents
.T
heel
ectr
ode
was
calib
rate
dre
gula
rlyag
ains
tpH
buffe
rst
anda
rds~M
erck
!.T
heor
igin
alju
nctio
nel
ectr
olyt
eof
the
elec
trod
ew
asre
plac
edby
3.0
mol
dm23
NaC
lto
avoi
dpr
ecip
itatio
nof
KC
lO4.
The
solid
phas
esw
ere
char
acte
rized
byx-
ray
pow
der
diffr
actio
n.
237 N
pus
edw
aspu
rified
from
238 P
u.N
oot
her
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
typr
oduc
t:se
eab
ove.
Co
~1!
@5 ~2!
~3!
~4!
Va
T/
p2
c 3 Th
10 for
a K Ad
Th
tiv Me
Th
the
or dm co we
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.19
.S
odiu
mbi
s~car
bona
to!di
oxon
eptu
nate~
V!–
sodi
umca
rbon
ate
–so
dium
nitr
ate
–ca
rbon
diox
ide
–w
ater
syst
em.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
equi
libra
ted
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nun
der
occa
sion
alst
irrin
gfo
r3
days
whi
chw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
An
aliq
uot
ofth
esu
spen
sion
was
then
with
draw
n,ce
ntrif
uged
,an
dth
eN
pco
ncen
trat
ion
inth
esa
tura
ted
solu
tion
was
dete
rmin
edby
coul
omet
rictit
ratio
n.1
The
solid
phas
ew
asch
arac
teriz
edby
x-ra
ydi
ffrac
tion.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
5K
~aut
hor!.
Ref
eren
ces:
1 G.
A.
Sim
akin
,P
.F
.B
akla
nova
,G
.F
.K
uzne
tsov
,an
dB
.V
.C
hern
ev,
Zh.
Ana
lit.
Khi
m.2
9,15
85~1
974!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Sod
ium
bis~c
arbo
nato!
diox
onep
tuna
te~V!;
3NpO
2~C
O3) 2
;@6
4438
-44-
4#S
odiu
mca
rbon
ate;
Na
2CO
3;
@497
-19-
8#S
odiu
mch
lorid
e;N
aCl;@7
647-
14-5#
Pot
assi
umch
lorid
e;K
Cl;@7
447-
40-7#
Wat
er;
H 2O
;@7
732-
18-5#
I.A
lM
aham
id,
C.
F.
Nov
ak,
K.
A.
Bec
kraf
t,S
.A
.C
arpe
nter
,an
dN
.H
akem
,R
adio
chim
.A
cta.8
1,93
–10
1~19
98!.
riabl
es:
Pre
pare
dby
:
K:
295
/mol
kg2
1 :0.
009
–95
–1.
00/m
olkg
21 :
5.00
/mol
kg2
1 :0.
10
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Na 3
NpO
2~C
O3!
2at
22°C
asa
func
tion
ofN
a 2CO
3co
ncen
trat
ion
inso
lutio
nsco
ntai
ning
NaC
land
KC
la
Na 2
CO
3
(m2
/mol
kg2
1 )N
p~V
!b
(104
mol
dm2
3 )
0.00
995c
0.14
060.
045
0.04
54c
3.55
60.
13
0.21
5c4.
096
0.13
1.00
d3.
476
0.11
llso
lutio
nsco
ntai
ned
5.00
mol
kg21
NaC
land
0.10
0m
olkg2
1K
Cl.
otal
Np~
V!
conc
entr
atio
nin
the
satu
rate
dso
lutio
n.ol
idph
ase
was
Na 3N
pO2~
CO
3!2,
@644
38-4
4-4#.
nide
ntifi
edso
lidph
ase.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.T
heso
lidw
aseq
uilib
rate
dw
ithlu
tions
ofth
ede
sire
dco
mpo
sitio
nin
poly
ethe
reth
erke
tone
ssel
s~C
adill
acP
last
ics!.
The
equi
libra
tion
time
was
170
ysw
ithst
eady
stat
ebe
ing
achi
eved
with
in10
7da
ys.
All
perim
ents
wer
eco
nduc
ted
unde
rar
gon
atm
osph
ere.
Sam
ples
the
satu
rate
dso
lutio
nsw
ere
filte
red
thro
ugh
4.1
nmnt
ricon
filte
rs~A
mic
onC
orp.!
.T
hepH
was
mea
sure
dus
ing
aR
oss
com
bina
tion
glas
sel
ectr
ode
calib
rate
din
each
ofth
eN
a1/K
1/C
l2so
lutio
nto
acco
unt
for
the
liqui
dju
nctio
npo
tent
ial.
The
Np~V
!co
ncen
trat
ion
was
mea
sure
dra
diom
etric
ally
bym
eans
ofa
high
purit
yG
ede
tect
orus
ing
the
29.4
keV
glin
eof
237 N
p.T
otal
inor
gani
cca
rbon
cont
ent
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
usin
gS
him
adzu
TO
C-5
050
carb
onan
alyz
er.
No
chan
ges
into
talc
arbo
nw
ere
obse
rved
.
Na 3
NpO
2~C
O3!
2w
aspr
epar
edby
addi
ng1
mol
dm23
Na 2
CO
3to
the
Np~
V!
stoc
kso
lutio
nto
obta
ina
final
carb
onat
eco
ncen
trat
ion
ofab
out
0.5
mol
dm23 .
Aw
hite
prec
ipita
tew
asfo
rmed
.P
urity
ofth
eN
p~V!
stoc
kso
lutio
n,in
clud
ing
oxid
atio
nst
ate
purit
y,w
asve
rified
asin
the
auth
ors’
prev
ious
wor
k.1
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
see
abov
e.
Ref
eren
ces:
1 C.
F.
Nov
ak,
I.A
lM
aham
id,
K.
A.
Bec
kraf
t,S
.A
.C
arpe
nter
,N
.H
akem
,an
dT
.P
russ
in,
J.S
olut
ion
Che
m.
26,
681
~199
7!.
639639IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Sod
ium
bis~c
arbo
nato!
diox
onep
tuna
te~V!;
Na 3
NpO
2~C
O3) 2
;@6
4438
-44-
4#~2
!S
odiu
mca
rbon
ate;
Na
2CO
3;
@497
-19-
8#~3
!S
odiu
mni
trat
e;N
aNO 3
;@7
631-
99-4#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
G.
A.
Sim
akin
,R
adio
khim
iya1
9,51
8–
21~1
977!
.
Var
iabl
es:
Pre
pare
dB
y:
T/K
:29
8c 2
/mol
dm2
3 :0.
25–
1.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofN
a 3N
pO2~
CO
3!2
at25
°Cin
Na 2C
O3–
NaN
O 3so
lutio
nsat
ioni
cst
reng
thof
3.0
mol
dm23
The
solu
bilit
yof
Na 3
NpO
2~C
O3!
2w
asde
term
ined
at25
°Cas
afu
nctio
nof
Na
2CO
3co
ncen
trat
ion
atpH
12.0
and
cons
tant
ioni
cst
reng
thof
3.0
mol
dm2
3m
aint
aine
dby
usin
gN
aNO 3.
The
resu
ltsw
ere
repo
rted
ingr
aphi
calf
orm
only
~see
Fig
.19!.
The
equi
libriu
mso
lidph
ase
was
Na 3
NpO
2~C
O3) 2•xH
2Oin
alls
olut
ions
,th
eso
lutio
nN
p~V!
spec
ies
was
the
NpO 2
~CO
3!35
2io
n.
Co
~1!
Na
~2!
~3!
~4!
~5!
Va
T/
m2
m3
m4
a A b T c S d U Me
Iso
so ve da ex of Ce
J
no
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 R.
J.Le
mire
,G
.D
.B
oyer
,an
dA
.B
.C
ampb
ell,
Rad
ioch
im.
Act
a61
,57
~199
3!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Pot
assi
umca
rbon
ato
diox
onep
tuna
te~V
!;pO
2CO
3;
@549
55-6
3-4#
Pot
assi
umca
rbon
ate;
K2C
O3;
@584
-08-
7#W
ater
;H 2
O;
@773
2-18
-5#
C.F
.Nov
ak,I
.AlM
aham
id,K
.A.B
eckr
aft,
S.A
.Car
pent
er,N
.H
akem
,an
dT
.P
russ
in,
J.S
olut
ion
Che
m.
26,
681
–97
~199
7!.
riabl
es:
Pre
pare
dby
:
K:
295
/mol
kg2
1 :0.
01–
4.83
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
KN
pO2C
O3
at22
°Cin
K 2C
O3
solu
tions
K2C
O3
2/m
olkg
21 )
Np~
V!a,
c
~mol
dm2
3 !S
olid
phas
edK
2CO
3
(c2
/mol
kg2
1 )N
p~V
!b,c
~mol
dm2
3 !S
olid
phas
ed
0.01
1(2
.476
0.27
)310
27
A0.
030
(3.3
060.
29)3
102
7A
0.03
0(3
.006
0.30
)310
27
A0.
070
(6.2
760.
59)3
102
7A
0.05
0(3
.656
0.34
)310
27
A0.
130
(1.7
960.
14)3
102
6A
0.07
0(6
.186
0.54
)310
27
A0.
171
(3.7
860.
29)3
102
6A
0.10
0(1
.266
0.09
)310
26
A0.
230
(9.9
460.
59)3
102
6A
e
0.24
9(1
.136
0.06
)310
25
B0.
300
(1.6
560.
10)3
102
5A
e
0.50
1(1
.846
0.06
)310
25
C0.
401
(3.5
860.
16)3
102
5A
e
0.73
9(1
.996
0.06
)310
25
C4.
83(1
.356
0.06
)310
24
B
0.99
3(2
.956
0.12
)310
25
C
0.99
3(3
.046
0.11
)310
25
C
0.99
3(2
.826
0.09
)310
25
C
1.50
(4.6
760.
18)3
102
5C
1.98
(6.7
960.
24)3
102
5C
4.81
(1.2
560.
04)3
102
4B
xper
imen
tspe
rfor
med
with
NpO 2
OH
asth
ein
itial
solid
phas
e.xp
erim
ents
perf
orm
edw
ithK
NpO 2
CO
3as
the
initi
also
lidph
ase.
otal
Np~
V!
conc
entr
atio
nin
the
satu
rate
dso
lutio
n.T
heau
thor
sdi
dno
tre
port
onth
em
eani
ngof
the
erro
r.!
KN
pO2C
O3
;@5
4955
-64-
5#;~B
!K
3NpO
2~C
O3!
2,a
mod
ifica
tion,
@#;
~C!
K3N
pO2~
CO
3!2,
b-m
odifi
catio
n,@
#.T
heau
thor
sdi
dno
txa
min
eth
ena
ture
ofth
edi
ffere
nce
betw
een
the
two
mod
ifica
tions
.T
hey
assu
med
itpe
rtai
ned
toth
ew
ater
ofhy
drat
ion
asso
ciat
edw
ithe
solid
phas
es.
rom
the
com
paris
onw
ithm
easu
rem
ents
usin
gN
pO2O
Has
the
initi
also
lidph
ase
the
auth
ors
conc
lude
dth
atin
thes
eso
lutio
ns,
i.e.,
in.2
–0.
4m
oldm
23
K2C
O3,
KN
pO2C
O3
was
met
asta
ble.
Add
ition
alin
form
atio
n:E
quili
briu
mco
nsta
nts
for
the
diss
olut
ion
reac
tions
KN
pO 2CO
3(s
)�K
11
NpO
211
CO
322an
dK 3
NpO
2~C
O3!
(s)�
3K
11
NpO
211
2CO
322
wer
eca
lcul
ated
tobe
102(1
3.66
0.1)
and
102
(15.
960.
1),
resp
ectiv
ely.
The
rmod
ynam
ican
alys
isof
the
solu
bilit
yda
taus
ing
the
Pitz
erio
nin
tera
ctio
nap
proa
chw
asal
sogi
ven.
640640 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Pot
assi
umca
rbon
ato
diox
onep
tuna
te~V
!;K
NpO
2CO
3;
@549
55-6
3-4#
~2!
Pot
assi
umca
rbon
ate;
K 2CO
3;
@584
-08-
7#~3
!W
ater
;H 2
O;
@773
2-18
-5#
G.I
.Vis
yash
eva,
Yu.
F.V
olko
v,G
.A.S
imak
in,I
.I.K
apsh
ukov
,A
.S
.B
evz,
and
G.
N.
Yak
ovle
v,R
adio
khim
iya,1
6,85
3–
9~1
974!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3an
d35
3c 2
/mol
dm2
3 :0.
1J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
KN
pO2C
O3
at20
and
80°C
in0.
1m
oldm2
3K
2CO
3so
lutio
na
Tem
pera
ture
~°C
!K
NpO
2CO
3
~mg
dm2
3 !K
NpO
2CO
3b
(105
c 1/m
oldm
23 )
201
0.42
2
8040
16.9
a Sol
idph
ase
was
KN
pO 2C
O3,
@549
55-6
3-4#,
inbo
thm
easu
rem
ents
.It
was
repo
rted
tobe
stab
lein
solu
tions
cont
aini
ng,
0.2
mol
dm2
3
K2C
O3.
b Cal
cula
ted
byco
mpi
ler
for
A r~N
p!5
237.
0482
.
Add
ition
alin
form
atio
n:In
Ref
.1,
the
solu
bilit
yof
KN
pO2C
O3
inK
2CO
3/K
Cl
solu
tions
ofio
nic
stre
ngth
of1.
0m
oldm2
3w
asre
port
edto
decr
ease
with
incr
easi
ngte
mpe
ratu
re.
The
data
inR
ef.
1sh
owed
rath
era
grea
tsc
atte
ran
dw
ere
pres
ente
din
grap
hica
lfo
rmon
ly.
For
this
reas
onco
mpi
latio
nw
aspr
epar
edfr
omR
ef.
1fo
rth
isvo
lum
e. Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Not
hing
spec
ified
.S
pecp
ure23
7 NpO
2w
asdi
ssol
ved
inco
ncen
trat
edH
NO
3,an
dN
p~V
!w
aspr
epar
edby
elec
troc
hem
ical
redu
ctio
nof
NpO
221at
plat
inum
elec
trod
e.T
hefin
also
lutio
nw
asad
just
edto
cont
ain
0.05
mol
dm2
3N
p~V
!an
d,
0.1
mol
dm2
3H
NO
3.O
nad
ding
0.1
–0.
2m
oldm
23
K2C
O3
solu
tion,
KN
pO2C
O3•xH
2O(x
,2
)w
asob
tain
edas
agr
een
prec
ipita
te.
Ana
lysi
s~f
ound
/cal
cula
ted
for
the
dihy
drat
e,in
mas
s%!:
K9.
3/9.
67,N
pO2
67.3
/66.
57,C
O 314
.9/1
4.85
,H 2
O~3
.2;
5.8!
/8.9
1.K 2
CO
3w
asa
chem
ical
lypu
repr
oduc
tan
dw
asre
crys
talli
zed
from
wat
er.
Co
~1!
KN
~2!
~3!
Va
T/
c 2 (c a E b E c T d ~A e th e F 0
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Pot
assi
umca
rbon
ato
diox
onep
tuna
te~V
!;K
NpO
2CO
3;
4955
-63-
4#P
otas
sium
carb
onat
e;K
2CO
3;
@584
-08-
7#S
odiu
mca
rbon
ate;
Na
2CO
3;
@497
-19-
8#P
otas
sium
chlo
ride;
KC
l;@744
7-40
-7#S
odiu
mch
lorid
e;N
aCl;@7
647-
14-5#
Wat
er;
H 2O
;@7
732-
18-5#
I.A
lM
aham
id,
C.
F.
Nov
ak,
K.
A.
Bec
kraf
t,S
.A
.C
arpe
nter
,an
dN
.H
akem
,R
adio
chim
.A
cta.8
1,93
–10
1~19
98!.
riabl
es:
Pre
pare
dby
:
K:
295
/mol
kg2
1 :0.
001
–1.
07/m
olkg
21 :
0.00
035
–0.
0099
5/m
olkg
21 :
0.00
34–
3.20
/mol
kg2
1 :5.
00
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
KN
pO2C
O3
at22
°Cas
afu
nctio
nof
K 2CO
3or
Na 2
CO
3co
ncen
trat
ion
inso
lutio
nsof
vary
ing
com
posi
tion
a
KC
l(m
4/m
olkg
21 )
K2C
O3
(m2
/mol
kg2
1 )N
a 2C
O3
(m3
/mol
kg2
1 )N
aCl
(m5
/mol
kg2
1 )N
p~V
!b
(104
mol
dm2
3 )
0.00
340.
0010
——
(1.2
160.
08)3
102
6
0.00
320.
0101
——
(6.6
160.
57)3
102
7
0.03
230.
0010
——
(5.8
960.
28)3
102
7
0.03
200.
0101
——
(3.4
760.
24)3
102
7
0.03
210.
100
——
(2.5
060.
32)3
102
6
0.32
00.
0010
——
(2.3
260.
24)3
102
7
0.32
00.
0101
——
(3.9
260.
38)3
102
7
0.32
00.
100
——
(3.7
160.
25)3
102
6
3.20
0.00
10—
—(1
.946
0.24
)310
27
3.20
0.01
01—
—(2
.246
0.32
)310
27
3.20
0.10
0—
—(1
.466
0.12
)310
25
1.00
0.99
6—
—(1
.686
0.10
)310
25
1.08
1.07
——
(1.8
260.
12)3
102
5
0.10
0—
0.00
035
5.00
(1.0
460.
41)3
102
6
0.10
0—
0.00
100
5.00
(1.1
560.
42)3
102
6
0.10
0—
0.00
310
5.00
(2.1
160.
99)3
102
6
0.10
0—
0.00
995
5.00
(6.3
260.
23)3
102
5
a Sol
idph
ase
was
KN
pO 2C
O3,
@549
55-6
3-4#,
inal
lsol
utio
ns.
b Tot
alN
p~V
!co
ncen
trat
ion
inth
esa
tura
ted
solu
tion.
The
auth
ors
did
not
repo
rton
the
mea
ning
ofth
eer
ror,
oron
how
the
erro
rw
ases
timat
ed.
Add
ition
alin
form
atio
n:T
heau
thor
sal
som
easu
red
the
solu
bilit
yof
KN
pO 2CO
3in
thre
edi
ffere
ntsy
nthe
ticN
a–
K–
Mg
–C
lbrin
esin
the
pres
ence
ofC
O2
gas.2
Afe
wm
easu
rem
ents
ofth
eso
lubi
lity
ofK
NpO 2C
O3
wer
ere
port
ed,i
ngr
aphi
calf
orm
,by
Lem
ireet
al.3
The
mea
sure
men
tsw
ere
perf
orm
edat
30an
d75
°Cin
K 2CO
3–
KC
lsol
utio
nsco
ntai
ning
1024–
102
1m
oldm
23
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
nan
d1.
0m
oldm
23
K1
ions
.
641641IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
edw
ithei
ther
NpO 2O
Hor
KN
pO2C
O3
asth
est
artin
gso
lid.
The
solid
was
adde
dto
K2C
O3
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
inpo
lyet
here
ther
keto
neve
ssel
s~C
adill
acP
last
ics!,
and
allo
wed
toeq
uilib
rate
for
upto
200
days
.S
tead
y-st
ate
Np
~V!
conc
entr
atio
nin
the
solu
tions
was
reac
hed
in15
0da
ysor
less
.S
ampl
esfr
omth
esa
tura
ted
solu
tions
wer
efil
tere
dth
roug
h4.
1nm
Cen
tric
onfil
ters
~Am
icon
Cor
p.!th
atha
dbe
enpr
etre
ated
with
500
mL
ofth
eso
lutio
nto
bean
alyz
ed.
No
adso
rptio
nof
Np
onth
efil
ter
was
obse
rved
.N
eptu
nium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
bym
easu
ring
the
29.4
keVg
ray
of23
7 Np
usin
ga
high
purit
yG
ede
tect
or.
Insa
mpl
esco
ntai
ning
,10
26
mol
dm2
3 Np
itw
asne
cess
ary
tore
mov
eth
eov
erla
pfr
omth
eda
ught
er233 P
ape
akat
28.6
keV
.T
his
was
achi
eved
bysp
ectr
ade
conv
olut
ion.
The
solid
phas
esw
ere
char
acte
rized
byx-
ray
diffr
actio
n.
NpO
2OH
was
prep
ared
byad
ditio
nof
aso
lutio
nof
KO
Hto
Np~
V!
solu
tion
in0.
1m
oldm
23
HC
l.T
here
sulti
nggr
een
solid
was
was
hed
twic
ew
ithC
O 2-fr
eede
-ioni
zed
wat
er.
The
KO
Hso
lutio
nw
aspr
epar
edin
aC
O2-
free
glov
ebo
x.K
NpO
2CO
3w
aspr
epar
edby
addi
tion
ofK 2C
O3
solu
tion
toth
eN
p~V!
stoc
kso
lutio
nin
0.1
mol
dm2
3H
Cl.
The
carb
onat
eio
nco
ncen
trat
ion
was
kept
belo
w0.
05m
oldm2
3to
prev
ent
prec
ipita
tion
ofK
3NpO
2~C
O3!
2.T
here
sulti
nggr
een
solid
was
was
hed
twic
ew
ith0.
05m
oldm
23
K2C
O3
tore
mov
ean
yC
l2io
ns.
The
purit
yof
the
Np~
V!
oxid
atio
nst
ate
inth
e237 N
pst
ock
solu
tion~
sour
ceno
tre
port
ed!
was
verifi
edby
com
paris
onbe
twee
nsp
ectr
opho
tom
etric
mea
sure
men
tsan
dg
coun
ting.
No
Np~I
V!
orN
p~V
I!w
ere
pres
ent.
KO
H~J.
T.B
aker!
and
K 2C
O3
~Mat
heso
n!us
edw
ere
A.
R.
grad
e.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
see
abov
e.
Co
~1!
@5 ~2!
~3!
~4!
~5!
~6!
Va
T/
m2
m3
m4
m5
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Pot
assi
umbi
s~car
bona
to!di
oxon
eptu
nate~V
!;N
pO2~
CO
3!2;
@549
55-6
4-5#
Pot
assi
umca
rbon
ate;
K2C
O3;
@584
-08-
7#W
ater
;H 2
O;
@773
2-18
-5#
G.I
.Vis
yash
eva,
Yu.
F.V
olko
v,G
.A.S
imak
in,I
.I.K
apsh
ukov
,A
.S
.B
evz,
and
G.
N.
Yak
ovle
v,R
adio
khim
iya16
,85
3–
9~1
974!
.
riabl
es:
Pre
pare
dby
:
K:
293
and
353
/mol
dm2
3 :1.
2J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
K3N
pO2~
CO
3!2
at20
and
80°C
in1.
2m
oldm2
3K
2CO
3so
lutio
na
Tem
pera
ture
~°C
!K
3NpO
2~C
O3!
2
~mg
dm2
3 !K
3NpO
2~C
O3!
2b
(105
c 1/m
oldm
23 !
208
3.37
8017
7.17
hew
hite
salt
K 3N
pO2~
CO
3!2
was
repo
rted
tobe
stab
lein
0.8
to1.
5m
oldm23
K2C
O3
solu
tions
.B
ased
onan
alys
isof
the
star
ting
ater
ial,
the
com
pile
ras
sum
edth
eeq
uilib
rium
solid
phas
eto
behy
drat
edK
3NpO
2~C
O3!
2.A
noth
erm
odifi
catio
nof
K 3NpO
2~C
O3!
2,pa
lello
wto
pale
gree
n,w
asob
tain
edby
prec
ipita
tion
from
solu
tions
cont
aini
ng.
1.8
mol
dm2
3K
2CO
3.S
olub
ility
data
for
this
mod
ifi-
tion
wer
eno
tre
port
ed.
alcu
late
dby
com
pile
rfo
rA r~
Np!
523
7.04
82.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
thin
gsp
ecifi
ed.
Spe
cpur
e237 N
pO2
was
diss
olve
din
conc
entr
ated
HN
O3,
and
Np~
V!
was
prep
ared
byel
ectr
oche
mic
alre
duct
ion
ofN
pO221
atpl
atin
umel
ectr
ode.
The
final
solu
tion
was
adju
sted
toco
ntai
n0.
05m
oldm
23
Np~
V!
and
,0.
1m
oldm
23
HN
O3.
On
addi
ng0.
8–
1.5
mol
dm2
3K
2CO
3so
lutio
n,K 3
NpO
2~C
O3!
2•xH
2O(x
,2
)w
asob
tain
edas
aw
hite
prec
ipita
te.
Ana
lysi
s~f
ound
/ca
lcul
ated
for
the
mon
ohyd
rate
,in
mas
s%
!:K
23.2
/22.
37,N
pO2
52.2
/51.
31,
CO 3
23.1
/22.
89,
H 2O
1.6/
3.43
.K 2
CO
3w
asa
chem
ical
lypu
repr
oduc
tan
dw
asre
crys
talli
zed
from
wat
er.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
642642 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
solid
was
equi
libra
ted
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
nin
poly
ethe
reth
erke
tone
vess
els~
Cad
illac
Pla
stic
s!.T
heeq
uilib
ratio
ntim
ew
as17
0da
ysw
ithst
eady
stat
ebe
ing
achi
eved
with
in10
7da
ys.
All
expe
rimen
tsw
ere
cond
ucte
dun
der
argo
nat
mos
pher
e.S
ampl
esof
the
satu
rate
dso
lutio
nsw
ere
filte
red
thro
ugh
4.1
nmC
entr
icon
filte
rs~A
mic
onC
orp.!
.T
hepH
was
mea
sure
dus
ing
aR
oss
com
bina
tion
glas
sel
ectr
ode
calib
rate
din
each
ofth
eK
1/C
l2or
Na1
/K1
/Cl2
solu
tion
toac
coun
tfo
rth
eliq
uid
junc
tion
pote
ntia
l.T
heN
p~V!
conc
entr
atio
nw
asm
easu
red
radi
omet
rical
lyby
mea
nsof
ahi
ghpu
rity
Ge
dete
ctor
usin
gth
e29
.4ke
Vg
line
of23
7 Np.
Insa
mpl
esco
ntai
ning
,10
26
mol
dm2
3N
p,th
eov
erla
pfr
omth
e28
.6ke
Vglin
eof
233 P
aw
asre
mov
edby
appl
ying
spec
tral
deco
nvol
utio
n.T
otal
inor
gani
cca
rbon
cont
ent
inth
esa
tura
ted
solu
tion
was
dete
rmin
edby
usin
gS
him
adzu
TO
C-5
050
carb
onan
alyz
er.
No
chan
ges
into
talc
arbo
nw
ere
obse
rved
.
Met
hod
ofpr
epar
atio
nof
KN
pO 2C
O3
was
notr
epor
ted.
Pur
ityof
the
Np~
V!
stoc
kso
lutio
n,in
clud
ing
oxid
atio
nst
ate
purit
y,w
asve
rified
asin
the
auth
ors’
prev
ious
wor
k.1
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
see
abov
e.
Ref
eren
ces:
1 C.
F.
Nov
ak,
I.A
lM
aham
id,
K.
A.
Bec
kraf
t,S
.A
.C
arpe
nter
,N
.H
akem
,an
dT
.P
russ
in,
J.S
olut
ion
Che
m.
26,
681
~199
7!.
2 C.
F.
Nov
ak,
H.
Nits
che,
H.
B.
Sib
ber,
K.
Rob
erts
,P
.C
.T
orre
tto,
T.
Pru
ssin
,K
.B
eckr
aft,
S.
A.
Car
pent
er,
D.
E.
Hob
art,
and
I.A
lMah
amid
,R
adio
chim
.A
cta74
,31
~199
6!.
3 R.
J.Le
mire
,G
.D
.B
oyer
,an
dA
.B
.C
ampb
ell,
Rad
ioch
im.
Act
a61
,57
~199
3!.
Co
~1!
K3
~2!
~3!
Va
T/
c 2 a T m ye ca b C Me
No
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 Ph
ysic
o-C
he
mic
alT
ab
les~S
NT
L,P
ragu
e,19
53!,V
ol.1
,p.2
68.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Ces
ium
tris~
carb
onat
o!di
oxon
eptu
nate~V
!;
5NpO
2~C
O3!
3;@
#C
esiu
mca
rbon
ate;
Cs
2CO
3;@5
34-1
7-8#
Wat
er;
H 2O
;@7
732-
18-5#
D.S
.Gor
benk
oan
dR
.A.Z
enko
va,Z
h.N
eorg
.Khi
m.
11,5
20–
8~1
966!
.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0.
2;10
0w2
/mas
s%
:50
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Cs 5
NpO
2~C
O3!
3at
20°C
inw
ater
and
inC
s2C
O3
solu
tions
a
Cs 2
CO
3
02w
2/m
ass%
)C
s 2C
O3
(c2
/mol
dm2
3 )N
p~V
!~m
gdm
23 !
Np~
V!b
(104
mol
dm2
3 )
00
22.7
0.95
8
—0.
287
.53.
69
50—
492.
020
.8
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
alcu
late
dby
com
pile
rus
ing
A r~N
p!5
237.
0482
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.2
–7
mg
ofth
edr
ysa
ltw
asui
libra
ted
with
wat
eror
Cs 2C
O3
solu
tion
ofth
ede
sire
dnc
entr
atio
nfo
r1
wee
kw
ithoc
casi
onal
stirr
ing.
The
time
cess
ary
toat
tain
equi
libriu
mw
asno
tre
port
ed.
An
aliq
uot
ofsa
tura
ted
solu
tion
was
acid
ified
with
HN
O3,
and
the
ptun
ium
conc
entr
atio
nw
asde
term
ined
radi
omet
rical
ly.
Cs 5
NpO
2~C
O3!
3w
aspr
epar
edby
prec
ipita
ting
NpO 2O
Hfr
oma
solu
tion
ofN
p~V
!in
1m
oldm
23
HN
O3
byac
tion
ofN
H 3so
lutio
n,an
dby
subs
eque
ntst
irrin
gth
epr
ecip
itate
form
edw
ithex
cess
of50
%C
s 2CO
3so
lutio
n.T
hepa
legr
een
–bl
uepr
ecip
itate
was
kept
in50
%C
s 2CO
3fo
r1
–2
days
,filte
red,
and
was
hed
with
dilu
teso
lutio
nof
Cs 2C
O3
and
acet
one.
Ana
lysi
s~fo
und/
calc
ulat
edfo
ran
hydr
ous
salt,
inm
ass
%!:
Cs
58.5
3/59
.69,
Np
20.6
8/21
.27,
CO 3
14.2
9/16
.16.
Sou
rce
and
purit
yof
Cs
2CO
3w
asno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
643643IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
6.4.
Sal
tsof
Dio
xoT
ris„ca
rbon
ato…
Nep
tuna
te„V…„-5…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Pot
assi
umtr
is~car
bona
to!di
oxon
eptu
nate~V
!;K
5NpO
2~C
O3!
3;@
#~2
!P
otas
sium
carb
onat
e;K
2CO
3;@5
84-0
8-7#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
D.S
.Gor
benk
oan
dR
.A.Z
enko
va,Z
h.N
eorg
.Khi
m.
11,5
20–
8~1
966!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0
–5.
57J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
K5N
pO2~
CO
3!3
at20
°Cin
wat
eran
din
K 2CO
3so
lutio
nsa
K2C
O3
(102
w2
/mas
s%)
K2C
O3
(c2
/mol
dm2
3 )N
p~V
!~m
gdm
23 !
Np~
V!b
(105
c 1/m
oldm
23 )
00
10.3
4.35
—0.
223
.09.
70
505.
57b
38.0
16.0
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
rus
ing
A r~N
P!5
237.
0482
.c C
alcu
late
dby
com
pile
rus
ing
the
dens
ityof
1.54
04g
cm2
3fo
r50
mas
s%
K 2CO
3.1
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
2–
7m
gof
the
dry
salt
was
equi
libra
ted
with
wat
eror
K 2CO
3so
lutio
nof
the
desi
red
conc
entr
atio
nfo
r1
wee
kw
ithoc
casi
onal
stirr
ing.
The
time
nece
ssar
yto
atta
ineq
uilib
rium
was
not
repo
rted
.A
nal
iquo
tof
the
satu
rate
dso
lutio
nw
asac
idifi
edw
ithH
NO
3,an
dth
ene
ptun
ium
conc
entr
atio
nw
asde
term
ined
radi
omet
rical
ly.
K5N
pO2~
CO
3!3
was
prep
ared
bypr
ecip
itatin
gN
pO 2OH
from
aso
lutio
nof
Np~
V!
in1
mol
dm2
3H
NO
3by
actio
nof
NH 3
solu
tion,
and
bysu
bseq
uent
stirr
ing
the
prec
ipita
tefo
rmed
with
exce
ssof
50%
K 2CO
3so
lutio
n.T
hepa
legr
een
–bl
uepr
ecip
itate
was
kept
in50
%K 2C
O3
for
1–
2da
ys,
filte
red,
and
was
hed
with
dilu
teso
lutio
nof
K 2C
O3
and
acet
one.
Ana
lysi
s~fo
und/
calc
ulat
edfo
ran
hydr
ous
salt,
inm
ass
%!:
K28
.43/
30.2
8,N
p34
.95/
36.8
0,C
O 327
.38/
27.9
5.S
ourc
ean
dpu
rity
ofK
2CO
3w
asno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Co
~1!
Cs
~2!
~3!
Va
T/
c 2 (1 a T b C Me
Iso
eq co ne the
ne
J
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
With
refe
renc
eto
the
auth
or’s
othe
rw
ork,
1th
eco
mpi
ler
assu
med
that
fres
hly
prec
ipita
ted
NH
4NpO
2CO
3•xH
2Ow
asst
irred
with
(NH 4
! 2C
O3
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
for
6–
8h.
Nep
tuni
umin
the
satu
rate
dso
lutio
nsw
asde
term
ined
radi
omet
rical
ly~m
etho
dno
tsp
ecifi
ed!.
NH
4NpO
2CO
3•xH
2Ow
asob
tain
edby
prec
ipita
tion
byad
ding
ast
oich
iom
etric
amou
ntof
(NH 4!
2CO
3to
asl
ight
lyac
idic
~pH
4–
5!so
lutio
nof
NpO
21.
Sou
rce
and
purit
yof
chem
ical
sus
edw
ere
not
spec
ified
.E
stim
ated
Err
or:
Tem
pera
ture
:pr
ecis
ion6
1K
~aut
hor;
inR
ef.
1!.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 A.
I.M
oskv
in,
Rad
iokh
imiy
a13,
681
~197
1!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
mon
ium
tris~
carb
onat
o!di
oxon
eptu
nate~V
I!;
H4!
4NpO
2~C
O3!
3;@
#A
mm
oniu
mca
rbon
ate;
(NH 4!
2CO
3;@5
06-8
7-6#
Wat
er;
H 2O
;@7
732-
18-5#
A.
I.M
oskv
in,
Rad
iokh
imiy
a13,
674
–81
~197
1!.
riabl
es:
Pre
pare
dby
:
K:
293a
/mol
dm2
3 :0
–2.
20J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
(NH
4!4N
pO2~
CO
3!3
at20
°Cin
(NH 4
! 2C
O3
solu
tions
b
(NH
4!2C
O3c
(c2
/mol
dm2
3 )N
p~V
I!(1
02m
oldm
23 )
010
.6
0.10
6.54
0.50
2.26
0.75
1.60
1.00
1.27
1.25
0.88
6
1.50
0.83
1
1.80
0.66
5
2.20
0.45
1
empe
ratu
rew
asno
tsp
ecifi
edin
the
orig
inal
docu
men
t.W
ithre
fere
nce
toth
eau
thor
’sot
her
pape
r1
the
com
pile
ras
sum
edth
em
easu
re-
ents
wer
epe
rfor
med
at20
°C.
hena
ture
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
hepH
ofth
esa
tura
ted
solu
tions
varie
dfr
om8.
5to
9.1
ongo
ing
from
0to
2.0
mol
dm2
3(N
H4!
2CO
3.
ditio
nali
nfor
mat
ion:
ede
crea
sing
solu
bilit
yof
(NH 4!
4NpO
2~C
O3!
3w
ithin
crea
sing
(NH 4
! 2C
O3
conc
entr
atio
nw
asex
plai
ned
byth
eau
thor
byth
edi
ssoc
ia-
nof
the
form
erto
the
solu
ble
NpO 2
~CO
3!222
com
plex
.F
rom
the
solu
bilit
yda
tath
eau
thor
obta
ined
the
equi
libriu
mco
nsta
nt,
K83
.3,
for
the
reac
tion
~NH
4!4N
pO2~
CO
3!3~
s!�
NpO
2~C
O3!
2221
CO
3221
4NH
41
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
With
refe
renc
eto
the
auth
or’s
othe
rw
ork,
1is
othe
rmal
met
hod
used
.F
resh
lypr
ecip
itate
d(N
H 4!4N
pO2~
CO
3!3
was
stirr
edw
ith(N
H4!
2CO
3so
lutio
nsof
the
desi
red
conc
entr
atio
nfo
r6
–8
h.N
eptu
nium
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
~met
hod
not
spec
ified!
.
(NH
4!4N
pO2~
CO
3!3
was
prep
ared
eith
erby
prec
ipita
tion
byad
ding
solid
(NH 4
! 2C
O3
toa
solu
tion
obta
ined
bydi
ssol
ving
NpO
2~O
H! 2
inco
ncen
trat
edH
NO 3,
orby
prol
onge
deq
uilib
ratio
nof
NpO
2~O
H! 2
with
.0.
5m
oldm
23
(NH
4!2C
O3.
Sou
rce
and
purit
yof
chem
ical
sus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
r,in
Ref
.1!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 A.
I.M
oskv
in,
Rad
iokh
imiy
a13,
681
~197
1!.
644644 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Am
mon
ium
carb
onat
odi
oxon
eptu
nate
~V!;
NH
4NpO
2CO
3;@
#~2
!A
mm
oniu
mca
rbon
ate;
(NH 4!
2CO
3;@5
06-8
7-6#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
A.
I.M
oskv
in,
Rad
iokh
imiy
a13,
674
–81
~197
1!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3a
c 2/m
oldm
23 :
0–
2.20
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
NH
4NpO
2CO
3at
20°C
in(N
H 4! 2
CO
3so
lutio
nsb
(NH
4!2C
O3c
(c2
/mol
dm2
3 )N
p~V
!c
(105
mol
dm2
3 )
01.
0d
0.20
1.51
0.60
4.51
1.00
6.20
1.25
10.0
1.50
12.3
2.00
10.5
2.20
7.81
a Tem
pera
ture
was
not
spec
ified
inth
eor
igin
aldo
cum
ent.
With
refe
renc
eto
the
auth
or’s
othe
rpa
per
1th
eco
mpi
ler
assu
med
the
mea
sure
-m
ents
wer
epe
rfor
med
at20
°C.
b The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.S
ince
the
star
ting
mat
eria
lw
ashy
drat
edN
H4N
pO2C
O3,
the
com
pile
ras
sum
edth
isw
asal
soth
eeq
uilib
rium
solid
phas
ein
solu
tions
cont
aini
ng0.
2–
1.5
mol
dm2
3(N
H4!
2CO
3.c T
hepH
ofth
esa
tura
ted
solu
tions
varie
dfr
om8.
8to
9.0
ongo
ing
from
0.2
to2.
2m
oldm
23
(NH
4!2C
O3.
d Ext
rapo
late
d~au
thor
!.
Add
ition
alin
form
atio
n:T
hein
crea
sein
the
solu
bilit
yof
NH 4N
pO2C
O3
with
incr
easi
ng(N
H 4! 2
CO
3co
ncen
trat
ion
was
ascr
ibed
byth
eau
thor
toth
efo
rmat
ion
ofth
eso
lubl
eN
pO2~
OH
!CO
322co
mpl
ex.I
tsov
eral
lsta
bilit
yco
nsta
ntw
asob
tain
edfr
omth
eso
lubi
lity
data
at0.
2–
1.5
mol
dm2
3(N
H4!
2CO
3
as(6
.761.
2)3
104
mol
2dm
26 .
To
expl
ain
decr
ease
ofN
H 4NpO
2CO
3so
lubi
lity
at2.
00an
d2.
20dm2
3(N
H4!
2CO
3,th
eau
thor
assu
med
the
form
atio
nof
asp
arin
gly
solu
ble
salt,
(NH
4!5N
pO2~
CO
3!3.
Aux
iliar
yIn
form
atio
n
Co
Am
(N ~2!
~3!
Va
T/
c 2 a T m b T c T Ad
Th
tio 5
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
wer
epr
ecip
itate
dfr
om0.
3,0.
5,an
d0.
1m
oldm23
carb
onat
eso
lutio
ns,
resp
ectiv
ely,
byad
ding
Co
~NH
3!6C
l 3to
give
a0.
04m
oldm
23
solu
tion.
The
irco
mpo
sitio
n,as
dedu
ced
from
chem
ical
anal
ysis
,w
as@C
o~N
H3!
6#2N
p~IV
!~C
O3!
5•4H
2O,
@Co~
NH
3!6#
@Np~
V!O
2~C
O3!
2#•1/
6 @C
o~N
H3!
6#2~
CO
3!3•
5H2O
,an
d$@
Co~
NH
3!6#
NO
3%2N
pO2~
CO
3!3,
resp
ectiv
ely.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.
Bilt
z,Z
.A
norg
.A
llgem
.C
hem
.83,
177
~191
4!.
6.6.
Nep
tuni
um„IV…
Oxa
late
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Nep
tuni
um~I
V!
bis~
oxal
ate!;
Np~
C2O
4!2;
@201
96-4
8-9#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Wat
er;
H 2O
;@7
732-
18-5#
P.
I.K
ondr
atov
aan
dA
.D
.G
elm
an,
Rad
iokh
imiy
a2,31
5–
9~1
960!
.
riabl
es:
Pre
pare
dby
:
K:
298
oxal
ate
ion!/
mol
dm2
3 :7.
6310
210
–4.
0310
25
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofN
p~C2O
4!2
inox
alic
acid
solu
tionsa
C2O
422
oldm
23 !b
Np~
C2O
4!2
(104
c 1/m
oldm
23 )
C2O
422
~mol
dm2
3 !bN
p~C
2O4!
2
(104
c 1/m
oldm
23 )
.63
102
101.
188.
7310
27
0.91
.43
102
90.
721.
753
102
61.
5
.63
102
90.
513.
153
102
62.
2
.53
102
80.
292.
5310
25
15.7
753
102
70.
283.
2310
25
24
.53
102
70.
414.
0310
25
30
hena
ture
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
xala
teio
nco
ncen
trat
ion
was
calc
ulat
edby
the
auth
ors
from
the
conc
entr
atio
nof
oxal
icac
id,
pHof
the
solu
tion,
and
the
diss
ocia
tion
onst
ants
ofox
alic
acid~
data
not
repo
rted!
.
ditio
nali
nfor
mat
ion:
omth
eso
lubi
lity
ofN
p~C2O
4!2
inox
alic
acid
solu
tions
,th
efo
llow
ing
Np~IV
!ox
alat
ocom
plex
esw
ere
iden
tified
inth
esa
tura
ted
lutio
ns,
and
thei
rov
eral
lin
stab
ility
cons
tant
sde
term
ined
:N
p~C
2O4!
21,
K15
(2.9
62
)310
29;
Np~
C2O
4!2,
K25
(2.9
60.
05)3
102
18;
~C2O
4!322
,K
35
(1.1
60.
1)3
102
24;
and
Np~
C2O
4!442
,K
45
43
102
28.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.F
resh
lypr
epar
edN
p~C
2O4!
2•6H
2Os
stirr
edw
ithox
alic
acid
solu
tions
ofth
ede
sire
dnc
entr
atio
nfo
r5
h.T
hem
ixtu
rew
asth
ence
ntrif
uged
,an
dpt
uniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
ectr
opho
tom
etric
ally
at32
0nm
mak
ing
use
ofab
sorb
ancy
ofth
eN
p~IV
!–H
2O2
com
plex
inal
kalin
em
ediu
m.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
645645IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
6.5.
Hex
amm
inec
obal
t„III…
Sal
tsof
Dio
xo„ca
rbon
ate…
Nep
tuna
tes
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1A
!B
is@h
exam
min
ecob
alt~III
!#pe
ntak
is~ca
rbon
ato!a
quan
eptu
nate~IV
!;@C
o~N
H3!
6#2N
p~C
O3!
5H2O
;@
#;~1
B!
Hex
amm
inec
obal
t~III
!bi
s~ca
rbon
ato!d
ioxo
nept
unat
e~V!;
Co~
NH
3!6N
pO2~
CO
3!2H
2O;
@#;
~1C
!B
is@h
exam
min
ecob
alt~III
!ni
trat
e#tr
is~c
arbo
nato!
diox
onep
tuna
te~VI!
;$@
Co~
NH
3!6#
NO
3%2N
pO2~
CO
3!3;
@#
~2!
Wat
er;
H 2O
;@7
732-
18-5#
A.
Sai
toan
dK
.U
eno,
J.In
org.
Nuc
l.C
hem
.39
,31
5–
8~1
977!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofbi
s@hex
amm
inec
obal
t~III
!#ca
rbon
ate
nept
unat
esin
wat
era
Com
poun
dN
p~m
gdm
23 !
Np
(106
mol
dm2
3 )b
1A0.
351.
48
1B2.
18.
85
1C6.
828
.7
a The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.b C
alcu
late
dby
com
pile
rfo
rA r~
Np!
523
7.04
82.
Add
ition
alin
form
atio
n:S
olub
ility
ofth
eco
mpo
und
1Ain
(NH 4!
2CO
3so
lutio
ns,
and
of1B
and
1Cin
Na
2CO
3so
lutio
nsas
afu
nctio
nof
carb
onat
eio
nco
ncen
trat
ion
wer
eal
som
easu
red,
and
pres
ente
din
grap
hica
lfor
m.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
No
expl
icit
deta
ilsw
ere
repo
rted
for
the
dete
rmin
atio
nof
solu
bilit
ies
inw
ater
.Ju
dged
from
the
othe
rso
lubi
lity
mea
sure
men
tsre
port
edin
this
docu
men
t,th
eso
lids
wer
eal
low
edto
stan
dw
itha
smal
lvol
ume
ofw
ater
for
1–
2da
ys.
Afte
rce
ntrif
ugat
ion,
nept
uniu
mw
asde
term
ined
inth
esu
pern
atan
tby
aco
untin
gof
237 N
pus
ing
aga
sflo
wpr
opor
tiona
lcou
nter
.
Fro
ma
stoc
kso
lutio
nof
Np~V
!ob
tain
edfr
om23
7 Np
purifi
edby
ion
exch
ange
,N
p~VI!
was
prep
ared
bypr
olon
ged
heat
ing
with
conc
entr
ated
HN
O 3w
hile
Np~
IV!
was
prep
ared
byre
duct
ion,
first
toN
p~III
!by
zinc
amal
gam
,an
dsu
bseq
uent
conv
ertin
gN
p~III
!to
Np~
IV!
byae
ratio
n.T
heva
lenc
ies
ofne
ptun
ium
wer
ech
ecke
dby
mea
nsof
abso
rptio
nsp
ectr
a.C
o~N
H3!
6Cl 3
was
prep
ared
acco
rdin
gto
Ref
.1.
The
com
poun
ds1A
,1B
,an
d1C
Co
~1!
~2!
~3!
Va
T/
c( ~m
7 1 3 3 1. 3
a T b O c Ad
Fr
so Np
Me
Iso
wa
co ne sp
J
mea
sure
men
tsth
eco
mpi
ler
estim
ates
the
prec
isio
n6
10%
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Nep
tuni
um~I
V!
bis~
oxal
ate!;
Np~
C2O
4!2;
@201
96-4
8-9#
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
D.
W.
Luer
kens
,U
SD
OE
Rep
ort
DP
-165
5,E
.I.
Du
Pon
tde
Nem
ours
and
Com
p.,
Sav
anna
hR
iver
Lab.
,A
iken
,S
C,
1983
.
riabl
es:
Pre
pare
dby
:
K:
295,
318
and
333
/mol
dm2
3 :0.
013
–0.
80/m
oldm
23 :
0.4
–10
.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Np~
C2O
4!2
inox
alic
acid
/nitr
icac
idso
lutio
nsat
thre
ete
mpe
ratu
res
a,b
C2H
2O422
2/m
oldm
23 )d
HN
O3
(c3
/mol
dm2
3 )dN
p~IV
!~m
gdm
23 !
Np~
C2O
4!2
(105
c 1/
mol
dm2
3 )gC
2H2O
422
(c2
/mol
dm2
3 )eH
NO
3
(c3
/mol
dm2
3 )eN
p~IV
!~m
gdm
23 !
Np~
C2O
4!2
(104
c 1/
mol
dm2
3 )g
0.01
40.
46.
12.
570.
013
0.4
45.5
1.92
0.07
80.
48.
73.
670.
077
0.4
35.5
1.48
0.15
80.
412
.85.
400.
157
0.4
94.0
3.97
0.39
70.
429
.212
.30.
397
0.4
92.5
3.90
0.80
0.4
37.4
15.8
0.79
90.
429
5.0
12.4
0.62
30.
531
.613
.30.
623
0.5
133.
05.
61
0.37
00.
614
.05.
910.
242
0.7
34.5
1.46
0.24
30.
79.
94.
180.
640
0.8
73.5
3.10
0.64
00.
820
.88.
780.
046
1.0
22.5
0.94
9
0.04
71.
04.
01.
690.
096
1.0
25.5
1.08
0.09
71.
05.
92.
490.
497
1.0
83.5
3.52
0.49
81.
09.
43.
970.
016
2.0
38.5
1.62
0.01
72.
04.
41.
860.
036
2.0
26.0
1.10
0.03
72.
04.
61.
940.
397
2.0
44.0
1.86
0.08
44.
05.
52.
320.
023
5.0
162.
56.
86
0.15
84.
05.
12.
150.
122
5.0
74.5
3.14
0.12
35.
07.
73.
250.
036
6.0
362.
515
.3
0.03
46.
035
.615
.00.
242
7.0
101.
04.
26
0.24
27.
010
.64.
470.
063
10.0
330.
013
.9
0.06
210
.035
.915
.1
646646 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Nep
tuni
um~I
V!
bis~
oxal
ate!;
Np~
C2O
4!2;
@201
96-4
8-9#
~2!
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
0#~3
!W
ater
;H 2
O;
@773
2-18
-5#
P.
I.K
ondr
atov
aan
dA
.D
.G
elm
an,
Rad
iokh
imiy
a,2,31
5–
9~1
960!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:28
9an
d29
2c 2
/mol
dm2
3 :1.
56–
2.09
at28
9K
;0.
41–
1.08
at29
2K
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
16an
d19
°Cof
Np~C
2O4!
2in
hydr
ochl
oric
acid
solu
tionsa
Tem
pera
ture
~°C
!H
Cl
(c2
/mol
dm2
3 )N
p~C
2O4!
2
(105
c 1/m
oldm
23 )
Np~
C2O
4!2
(105
c 1/m
oldm
23 )b
161.
5619
.819
.219
.219
.460.
20
162.
0929
.728
.229
.060.
75
190.
414.
173.
283.
373.
713.
6360.
20
191.
0812
.714
.613
.760.
95
a The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.b M
ean
valu
ean
dst
anda
rdde
viat
ion
ofth
em
ean
~com
pile
r!.
Add
ition
alin
form
atio
n:T
hein
crea
sing
solu
bilit
yof
Np~C
2O4!
2w
ithin
crea
sing
HC
lco
ncen
trat
ion
was
expl
aine
dby
the
auth
ors
byco
nsid
erin
gth
ere
actio
nN
p~C
2O4!
214H
1�
Np41
12C
2H2O
4.T
heeq
uilib
rium
cons
tant
ofth
isre
actio
nw
asob
tain
edas
(6.0
61.
3)3
102
12an
d(4
.860.
3)3
102
12at
19an
d16
°C,
resp
ectiv
ely,
and
did
not
depe
ndon
HC
lco
ncen
trat
ion.
Thi
sin
dica
ted
that
Np
41/C
l2co
mpl
exes
play
eda
negl
igib
lero
lein
this
syst
em.
Fro
mth
ese
cons
tant
san
ddi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
,th
eso
lubi
lity
prod
uct
ofN
p~C
2O4!
2w
asob
tain
edas
(8.66
1.8)
310
223
and
(6.96
0.4)
310
223
at19
and
16°C
,re
spec
tivel
y.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Fre
shly
prep
ared
Np
~C2O
4!2•
6H2O
was
stirr
edw
ithox
alic
acid
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
for
5h.
The
mix
ture
was
then
cent
rifug
ed,
and
nept
uniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
spec
trop
hoto
met
rical
lyat
320
nmm
akin
gus
eof
abso
rban
cyof
the
Np~
IV!–
H2O
2co
mpl
exin
alka
line
med
ium
.
No
deta
ilsre
port
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rsfo
rth
em
easu
rem
ents
inth
eN
p~C
2O4!
2–
C2H
2O4–
H2O
syst
emre
port
edin
this
sam
edo
cum
ent!.
Sol
ubili
ty:
base
don
stan
dard
devi
atio
nsof
indi
vidu
al
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 (c
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
y- p- ly:
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
At
room
tem
pera
ture
~22
°C!,
exce
ssN
p~C
2O4!
2•6H
2Ow
aseq
uilib
rate
dw
ithC 2H
2O4
/HN
O3
solu
tions
ofth
ede
sire
dco
ncen
trat
ion.
Inm
easu
rem
ents
at45
and
60°C
,N
p~IV
!ox
alat
ew
aspr
ecip
itate
dfr
omC
2H2O
4/H
NO
3so
lutio
nsby
addi
tion
ofN
p~IV
!ni
trat
eso
lutio
n.In
both
met
hods
,th
eso
lutio
nsco
ntai
ned
N2H
4to
prot
ect
Np~I
V!
from
oxid
atio
ndu
eto
radi
olyt
icpr
oduc
tsof
HN
O3,
and
wer
eeq
uilib
rate
dfo
r24
h.T
hem
easu
rem
ents
atro
omte
mpe
ratu
rew
ere
not
ther
mos
tate
d.S
atur
ated
solu
tions
wer
efil
tere
dan
dsa
mpl
edus
ing
a0.
25mm
mic
ropo
refil
ter
ona
syrin
ge.
The
filte
red
sam
ples
wer
eim
med
iate
lydi
lute
din
stro
ngH
NO 3
topr
even
tpr
ecip
itatio
n,an
dN
pco
ncen
trat
ion
was
dete
rmin
edby
aco
untin
g.
Ast
ock
solu
tion
ofpu
rified
237 N
pw
aspr
epar
edby
ion
exch
ange
.1N
eptu
nium
~VI!
inth
eel
uate
was
redu
ced
first
toN
p~V
!by
heat
ing
the
elua
teto
55°C
inth
epr
esen
ceof
0.1
mol
dm2
3N
2H4.
The
solu
tion
ofN
p~V!
was
cool
edto
room
tem
pera
ture
and
redu
ced
toN
p~I
V!
with
0.03
mol
dm2
3ex
cess
asco
rbic
acid
.S
olid
Np~IV
!ox
alat
ew
asob
tain
edby
prec
ipita
tion
ofN
p~IV
!w
ithex
cess
ofox
alic
acid
.T
hepr
ecip
itate
was
filte
red
and
was
hed
with
dist
illed
wat
erto
rem
ove
exce
ssox
alat
ean
dni
trat
eio
ns.
Sou
rce
and
purit
yof
othe
rch
emic
als,
and
radi
oche
mic
alpu
rity
of237 N
pus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 G.
A.
Bur
ney,
US
AE
C,
Rep
ort
DP
-689
,19
62.
6.7.
Nep
tuni
um„V
I…D
ioxo
„ox
alat
e…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Nep
tuni
um~V
I!di
oxoo
xala
te;
NpO
2C2O
4;
@#
Oxa
licac
id;
C 2H
2O4
;@1
44-6
2-7#
Nitr
icac
id;
HN
O3
;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
M.P
.Mef
odev
a,N
.N.K
rot,
T.V
.Sm
irnov
a,an
dA
.D.G
elm
an,
Rad
iokh
imiy
a11,
193
–20
0~19
69!.
riabl
es:
Pre
pare
dby
:
K:
287
/mol
dm2
3 :0
–0.
15/m
oldm
23 :
1.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
14°C
ofN
pO2C
2O4
inox
alic
acid
solu
tions
cont
aini
ng1.
0m
oldm2
3 HN
O3a
C2H
2O4b
~mol
dm2
3 !C
2H2O
4c
(c2
/mol
dm2
3 !N
pO2C
2O4
(103
c 1/m
oldm
23 !
00.
0017
15.7
d0.
0032
12.8
0.00
630
0.00
828.
9
0.01
250.
0137
7.15
0.02
500.
0262
6.25
0.03
790.
0390
5.85
0.05
000.
0512
4.75
0.10
0.10
14.
05
0.10
0.10
23.
65
0.15
0.15
13.
25
heeq
uilib
rium
solid
phas
ew
asN
pO 2C2O
4•3H
2O,
@#,
inal
lsol
utio
ns.
itial
conc
entr
atio
n.iti
alco
ncen
trat
ion
corr
ecte
dfo
rth
ein
crea
sedu
eto
the
reac
tion
2N
pO2C
2O41
2H1�
2N
pO
211
C2H
2O41
2CO
2.he
conc
entr
atio
nre
port
edas
1.0
mol
dm23
isob
viou
sly
am
ispr
int.
ditio
nali
nfor
mat
ion:
rom
the
solu
bilit
yda
ta,
the
auth
ors
calc
ulat
edth
eso
lubi
lity
prod
uct
ofN
pO2C
2O4
as2.
3310
29
mol
2dm
26 .
heso
lubi
lity
ofN
pO2C
2O4
was
repo
rted
toin
crea
sew
ithin
crea
sing
tem
pera
ture
~dat
are
port
edin
grap
hica
lfor
m!.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
offr
eshl
ypr
ecip
itate
dN
pO2C
2O4•
3H2O
was
equi
libra
ted
with
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
ina
ther
mos
tate
dba
thfo
r20
min
.T
hen
aliq
uots
wer
ew
ithdr
awn
usin
ga
pipe
ttew
itha
filtr
atio
nad
apto
r,an
dth
eco
nten
tof
nept
uniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
spec
trop
hoto
met
rical
ly.
The
abso
rptio
nba
ndof
Np~V
!at
981
nmw
asus
edw
hich
mad
eit
poss
ible
tode
term
ine
Np~V
!an
dN
p~V
I!si
mul
tane
ousl
y,an
dth
usco
rrec
tth
eto
talN
pco
ncen
trat
ion
inth
eso
lutio
nfo
rN
p~V
!fo
rmed
durin
geq
uilib
ratio
n.T
heso
lubi
lity
ofN
pO2C
2O4
was
calc
ulat
edfr
omth
eN
p~VI!
conc
entr
atio
n.
NpO
2C2O
4•3H
2Ow
aspr
epar
edby
prec
ipita
ting
Np
~VI!
with
oxal
icac
idfr
oma
solu
tion
cont
aini
ng20
–40
gdm2
3N
p,2
–3
mol
dm2
3 HN
O3,
and
0.05
mol
dm2
3 KB
rO3.
The
prec
ipita
tew
asw
ashe
dw
ith0.
2m
oldm2
3 HN
O3,
etha
nol
and
ethe
r,an
dai
rdr
ied
for
30m
in.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
647647IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
C2H
2O422
(c2
/mol
dm2
3 )fH
NO
3
(c3
/mol
dm2
3 )fN
p~C
2O4!
2
~mg
dm2
3 !
Np~
C2O
4!2
(105
c 1/
mol
dm2
3 )C
2H2O
422
(c2
/mol
dm2
3 )fH
NO
3
(c3
/mol
dm2
3 )fN
p~C
2O4!
2
~mg
dm2
3 !
Np~
C2O
4!2
(104
c 1/
mol
dm2
3 )
0.01
30.
474
.93.
160.
017
2.0
76.2
3.22
0.07
70.
460
.22.
540.
036
2.0
54.8
2.31
0.15
70.
474
.53.
140.
196
2.0
36.4
1.54
0.39
00.
417
2.4
7.27
0.39
62.
032
.41.
37
0.78
90.
426
3.7
11.1
0.45
63.
036
.71.
55
0.62
20.
511
8.9
5.02
0.01
64.
037
8.1
16.0
0.36
70.
610
6.6
4.50
0.08
34.
010
4.6
4.41
0.24
10.
761
.92.
610.
156
4.0
53.8
2.27
0.64
00.
884
.93.
580.
123
5.0
198.
28.
36
0.04
61.
068
.32.
880.
036
6.0
420.
117
.7
0.09
71.
049
.62.
090.
242
7.0
104.
64.
41
0.49
71.
084
.43.
560.
063
10.0
369.
815
.6
a The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.In
inte
rpre
tatio
nof
the
resu
lts,
the
auth
oras
sum
edth
isto
beth
ehe
xah
drat
e,N
p~C2O
4!2•
6H2O
,@
#.b A
llso
lutio
nsco
ntai
ned
anun
spec
ified
conc
entr
atio
nof
hydr
azin
eus
edto
stab
ilize
Np
~IV
!va
lenc
yst
ate,
and
prev
ent
itfr
omox
idat
ion
bypr
oduc
tsof
HN
O 3ra
diol
ysis
.c In
itial
~tot
al!
conc
entr
atio
n.d R
oom
tem
pera
ture~
22°C
!.e M
easu
rem
ents
perf
orm
edat
45°C
.f M
easu
rem
ents
perf
orm
edat
60°C
.g C
alcu
late
dby
com
pile
rus
ing
A r~N
p!5
237.
0482
.
Add
ition
alin
form
atio
n:V
aria
tions
inN
p~C2O
4!2
solu
bilit
yw
ithth
eco
ncen
trat
ions
ofox
alic
and
nitr
icac
ids
wer
eas
crib
edby
the
auth
orto
the
varia
tions
offr
eeox
alat
eio
nco
ncen
trat
ion,
whi
chco
ntro
lsth
eeq
uilib
riabe
twee
nN
p~I
V!
oxal
ate
com
plex
esin
solu
tions
.M
inim
umso
lubi
lity
corr
espo
nds
toth
eco
nditi
ons
whe
reth
efo
rmat
ion
ofth
ehi
ghly
inso
lubl
eN
p~C
2O4!
2pr
edom
inat
es.
Incr
ease
dso
lubi
lity
corr
espo
nds
toth
efo
rmat
ion
ofN
p~C
2O4!
21or
Np~
C2O
4!322
com
plex
esas
the
free
oxal
ate
conc
entr
atio
nde
crea
ses
orin
crea
ses,
resp
ectiv
ely.
Bas
edon
thes
eas
sum
tions
,th
eso
lubi
lity
ofN
p~C2O
4!2
was
expr
esse
das
@Np~
IV! #
tot5
@Np~
C2O
4!21
#1@N
p~C
2O4!
2#1
@Np~
C2O
4!322
#5K
11
K1K
2/R
s1K
1K
3R
s,
whe
reK
15
@Np~
C2O
4!2#
~equ
ilibr
ium
cons
tant
for
the
reac
tion
Np
~C2O
4!2•
6H2O
~s!
Np~
C2O
4!2~
aq!)
,K
25
@Np~
C2O
4!21
#@C
2H2O
4#
3@N
p~C
2O4!
2#2
1@H
1#2
2,
K35
@Np~
C2O
4!322
#@H
1#2
@Np~
C2O
4!2#
21@C
2H2O
4#2
1,
and
Rs5
@C2H
2O4#
@H1
#225
@C2H
2O4#
@HN
O3#
22.
By
leas
tsq
uare
str
eatm
ent
ofex
perim
enta
lda
ta,
the
auth
orob
tain
edth
efo
llow
ing
cons
tant
s,al
way
sat
22,
45,
and
60°C
,re
spec
tive
K15
4.26
0.7,
14.36
6.5,
41.96
5.3;
K1K
25
0.03
060.
002,
0.34
60.
02,0
.356
0.02
;K1K
35
8.26
0.7,
60.16
5.4,
43.96
4.9.
Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 a T b In c In d T Ad
a F b T
J
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Por
tions
ofP
uO 2CO
3w
ere
adde
dto
LiH
CO
3so
lutio
nsof
the
desi
red
conc
entr
atio
n.T
hem
ixtu
res
wer
eeq
uilib
rate
dw
ithoc
casi
onal
agita
tion
for
16h,
intw
om
easu
rem
ents
equi
libra
tion
time
of10
days
was
used
.A
fter
cent
rifug
atio
nan
aliq
uot
ofth
eda
rkre
dsa
tura
ted
solu
tion
was
drie
don
ast
ainl
ess
stee
lslid
ean
da
coun
ted
tode
term
ine
the
plut
oniu
mco
nten
t.T
heco
ncen
trat
ion
ofLi
HC
O3
inth
ein
itial
solu
tions
was
dete
rmin
edby
titra
tion
with
ast
anda
rdH
Cl
solu
tion.
PuO
2CO
3w
aspr
epar
edfr
omLi
plut
onat
e.T
hela
tter
was
obta
ined
from
aP
u~VI!
solu
tion
bypr
ecip
itatio
nw
ithso
lidLi
OH
.T
hepr
ecip
itate
was
was
hed
seve
ral
times
with
dilu
teLi
OH
,sl
urre
din
wat
er,
and
CO 2
gas
was
bubb
led
thro
ugh
the
slur
ryun
tilth
eda
rkbr
own
prec
ipita
tech
ange
dto
yello
wP
uO2C
O3.
Sou
rce
and
purit
yof
mat
eria
lsus
edw
ere
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
7.1.
1.E
valu
atio
nof
the
PuO
2CO
3¿C
O2¿
NaC
lO4¿
H2O
Sys
tem
mpo
nent
s:E
valu
ator
:
Plu
toni
um~V
I!di
oxo
carb
onat
e;P
uO 2C
O3
;@3
9292
-10-
9#C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
The
mos
text
ensi
vest
udie
son
the
solu
bilit
yof
PuO
2CO
3in
NaC
lO4
solu
tions
asa
func
tion
ofeq
uilib
rium
carb
onat
eio
nco
ncen
trat
ion
sbe
enca
rrie
dou
tby
Pas
halid
iseta
l.1,2
The
data
wer
eob
tain
edat
295.
1K
inm
easu
rem
ents
cond
ucte
das
pHtit
ratio
nsin
mol
dm2
3 NaC
lO4
solu
tions
with
care
ful
cont
rol
ofex
perim
enta
lpa
ram
eter
ssu
chas
pH,
part
ial
pres
sure
ofC
O2,
atta
inin
geq
uilib
-m
,an
dch
arac
teriz
atio
nof
solid
phas
esdu
ring
solu
bilit
ym
easu
rem
ents
.B
oth
sets
ofm
easu
rem
ents
1,2
yiel
ded
solu
bilit
yda
taw
ithce
llent
repr
oduc
ibili
ty~s
eeth
eco
rres
pond
ing
com
pila
tion
shee
ts!.
InR
ef.
1,so
lubi
lity
prod
uct
ofP
uO 2C
O3
was
repo
rted
tobe
Ksp
102
(13.
986
0.12
)m
ol2
dm2
6in
0.1
mol
dm2
3N
aClO
4,an
dK
sp05
102
(14.
846
0.10
)m
ol2
dm2
6at
zero
ioni
cst
reng
th.
Sol
ubili
typr
oduc
t
p510
2(1
3.56
0.3)
mol
2dm
26
has
been
repo
rted
for
3.0
mol
dm23 N
aClO
4so
lutio
ns.B
ased
onth
ese
valu
esob
tain
edus
ing
high
prec
isio
npe
rimen
tal
tech
niqu
e,it
issu
gges
ted
that
the
valu
eK
sp5
102
12.8
mol
2dm
26 ,
obta
ined
byca
lcul
atio
nin
Ref
.4
from
the
solu
bilit
yof
H4!
2Pu 2
O7
in(N
H4!
2CO
3so
lutio
ns,
bedi
sreg
arde
das
erro
neou
sly
high
.A
sfo
rth
ede
pend
ence
ofth
eso
lubi
lity
ofP
uO 2CO
3on
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
nth
esi
tuat
ion
rese
mbl
esth
atfo
r
2CO
3~s
eeC
ritic
alE
valu
atio
n!.T
heso
lubi
lity
vers
us@C
O32
2#
plot
pass
esth
roug
ha
min
imum
whe
reth
eso
lubi
lity
ofP
uO2C
O3
iste
rmin
edby
Ksp
only
,w
hile
the
incr
ease
inth
eso
lubi
lity
athi
gher @C
O32
2#
valu
esis
caus
edby
the
form
atio
nof
anio
nic
carb
onat
o-m
plex
esof
Pu~V
I!in
the
satu
rate
dso
lutio
ns.
InR
ef.
2,m
inim
umso
lubi
lity
ofap
prox
imat
ely
53
102
6m
oldm
23
was
obse
rved
inth
eO
322
#ra
nge
from
102
8to
102
6m
oldm
23 .
Thi
sis
inge
nera
lag
reem
ent
with
the
wor
kof
Rob
ouch
and
Vito
rge
3w
hoob
serv
edni
mum
solu
bilit
yof
abou
t102
5m
oldm
23
over
appr
oxim
atel
yth
esa
me @C
O32
2#
rang
eat
ioni
cst
reng
thof
3.0
mol
dm23
NaC
lO4.
fere
nces
:
Pas
halid
is,
W.
Run
de,
and
J.I.
Kim
,R
adio
chim
.A
cta
61,
141
~199
3!.
Pas
halid
is,
K.
R.
Cze
rwin
ski,
F.
Fan
gha
¨ nel
,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a76,
55~1
997!
.
.R
obou
chan
dP
.V
itorg
e,In
org.
Chi
m.
Act
a140,
239
~198
7!.
.D
.G
elm
an,
A.
I.M
oskv
in,
and
V.
P.
Zai
tsev
a,R
adio
khim
iya
4,15
4~1
962!
.
648648 JIRI HALA
7.T
heS
olub
ility
ofP
luto
nium
Com
poun
ds
7.1.
Plu
toni
um„V
I…D
ioxo
carb
onat
e
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~V
I!di
oxoc
arbo
nate
;P
uO 2C
O3
;@3
9292
-10-
9#~2
!Li
thiu
mhy
drog
enca
rbon
ate;
LiH
CO 3;
@500
6-97
-3#~3
!W
ater
;H 2
O;
@773
2-18
-5#
L.J.
Witt
enbe
rgan
dR
.H.S
tein
mey
er,J
.Ino
rg.N
ucl.
Che
m.
24,
1015
–6~
1962
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
7c 2
/mol
dm2
3 :0
–0.
94J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
24°C
ofP
uO2C
O3
inLi
HC
O3
solu
tions
a
LiH
CO
3
(c2
/mol
dm2
3 !P
u~V
I!~g
dm2
3 !P
uO2C
O3
(103
c 1/m
oldm
23 !
b
00.
043
0.18
0
0.05
1.12
4.69
0.05
c,d
1.37
5.73
0.10
3.01
12.6
0.24
10.2
42.7
0.25
11.4
47.7
0.50
14.6
61.0
0.75
c22
.393
.3
0.94
24.2
101.
2
a The
equi
libriu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
b Cal
cula
ted
byco
mpi
ler
usin
gA
rr~
Pu!
523
9.05
3.c E
quili
brat
ion
time
10da
ys.
d Thi
sm
easu
rem
ents
eem
sto
indi
cate
that
16h
equi
libra
tion
may
notb
esu
ffici
entt
ogi
veth
etr
ueeq
uilib
rium
solu
bilit
yva
lues
~com
pile
r!.
Add
ition
alin
form
atio
n:T
hedi
ssol
utio
nre
actio
nw
aspo
stul
ated
byth
eau
thor
sas
PuO
2CO
3~s!
1xL
iHC
O3~
aq!�
LixP
uO2~
CO
3!~H
CO
3) x
~aq !
Aux
iliar
yIn
form
atio
n
Co
~1!
~2!
~3!
~4!
ha 0.1
riu ex 5 Ks
ex (N UO
de co @C mi
Re
1 I. 2 I. 3 P 4 A
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
FIG
.20
.P
luto
nium
~VI!
diox
ocar
bona
te–
sodi
umhy
drog
enca
rbon
ate
–so
dium
perc
hlor
ate
–ca
rbon
diox
ide
–w
ater
syst
em.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
pHtit
ratio
nw
asus
ed.
Fre
shly
prec
ipita
ted
O 2C
O3
was
diss
olve
din
a0.
1m
oldm2
3N
aHC
O 32.
9m
oldm
23
NaC
lO4
solu
tion.
The
gree
nso
lutio
nob
tain
ed0
mL!
was
intr
oduc
edin
toa
cell
thro
ugh
whi
cha
CO
2/A
rxt
ure,
pre-
equi
libra
ted
in3.
0m
oldm2
3N
aClO
4,w
asbb
led
atth
ede
sire
dC
O 2pr
essu
re.
Und
erco
nsta
ntag
itatio
n,w
asm
easu
red.
Whe
nat
agi
ven
pHth
eso
lubi
lity
was
nsta
nt,
3m
oldm
23
HC
lO4
or1
mol
dm2
3N
aHC
O 3w
asde
dto
vary
free
carb
onat
eio
nco
ncen
trat
ion.
At
each
nsta
ntpH
valu
e,th
eP
u~V
I!co
ncen
trat
ion
was
dete
rmin
edac
idify
ing
the
sam
ple
with
HC
lO 4,
and
mea
surin
gth
elig
htso
rptio
nof
PuO
221
spec
trop
hoto
met
rical
lyat
830.
4nm
.T
henc
entr
atio
nof
H1io
nsw
asm
easu
red
pote
ntio
met
rical
lyby
ing
aco
mbi
natio
ngl
ass
elec
trod
ew
itha
Ag/
AgC
lref
eren
celf
cell.
The
orig
inal
refe
renc
eso
lutio
nw
asre
plac
edw
itha
1m
oldm
23
NaC
l12.
99m
oldm
23
NaC
lO4
solu
tion.
The
ctro
dew
asca
libra
ted
agai
nst
ase
ries
ofbu
ffer
solu
tions
.e
equi
libriu
mso
lidph
ase
was
char
acte
rized
byx-
ray
frac
tion
seve
ralt
imes
durin
gth
eex
perim
ent.
The
pHat
ion
ofa
give
nso
lidw
ere
run
not
long
erth
an2
wee
ksin
der
toav
oid
radi
olyt
ictr
ansf
orm
atio
nof
the
solid
into
drol
yzed
prod
ucts
.
The
Pu~V
I!pe
rchl
orat
eso
lutio
nw
aspr
epar
edfr
oman
acid
stoc
kso
lutio
nby
evap
orat
ion
ofH
ClO 4
until
mos
tof
the
exce
ssac
idha
dbe
enre
mov
ed.
The
conc
entr
ated
solu
tion
was
diss
olve
din
0.1
mol
dm2
3H
ClO
4an
dP
uO2C
O3
was
prec
ipita
ted
byad
ditio
nof
NaH
CO 3
.F
orea
chpH
titra
tion,
PuO 2
CO
3w
aspr
epar
edfr
omfr
esh
perc
hlor
ate
solu
tion
toav
oid
redu
ctio
nof
Pu
~VI!
byra
diol
ysis
.
Est
imat
edE
rror
:T
empe
ratu
re:6
1K
~aut
hors!
.S
olub
ility
:pr
ecis
ion
not
repo
rted
.
649649IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~V
I!di
oxoc
arbo
nate
;P
uO 2C
O3
;@3
9292
-10-
9#~2
!C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#~3
!S
odiu
mhy
drog
enca
rbon
ate;
NaH
CO
3;
@144
-55-
8#~4
!S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
~5!
Wat
er;
H 2O
;@7
732-
18-5#
P.
Rob
ouch
and
P.
Vito
rge,
Inor
g.C
him
.A
cta14
0,23
9–
42~1
987!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3p
2/~
part
ialp
ress
ure
ofC
O 2!/k
Pa:
9.81
,29
.4,
and
98.1
c 4/m
oldm
23 :3
.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofP
uO2C
O3
at20
°Cas
afu
nctio
nof
equi
libriu
mC
O 322
ion
conc
entr
atio
nat
thre
edi
ffere
ntpa
rtia
lpre
ssur
esof
CO
2an
dat
ioni
cst
reng
thof
3.0
mol
dm23
The
solu
bilit
yof
PuO
2CO
3in
NaH
CO 3
solu
tions
with
ioni
cst
reng
thof
3.0
mol
dm23
mai
ntai
ned
byus
ing
NaC
lO 4w
asm
easu
red
atth
ree
diffe
rent
part
ial
pres
sure
sof
CO
2of
0.1,
0.3
and
1.0
atm
at20
°C.
The
equi
libriu
mso
lidph
ase
was
iden
tified
asP
uO2C
O3,
@392
92-1
0-9#.
The
resu
ltsw
ere
repo
rted
ingr
aphi
calf
orm
only
~see
Fig
.20
!.
Add
ition
alin
form
atio
n:F
ree
carb
onat
eio
nco
ncen
trat
ion
was
calc
ulat
edby
the
auth
ors
from
the
valu
esof
@H1
#,pa
rtia
lpr
essu
reof
CO 2,
and
diss
ocia
tion
cons
tant
sof
carb
onic
acid
.S
ince
ata
cons
tant
free
carb
onat
eio
nco
ncen
trat
ion
the
solu
bilit
yof
PuO
2CO
3di
dno
tde
pend
onth
ehy
drog
enca
rbon
ate
ion
conc
entr
atio
n,pH
,or
pres
sure
ofC
O2,
the
auth
ors
conc
lude
dth
atth
edi
ssol
utio
nis
cont
rolle
dby
the
reac
tion
PuO
2CO
3~s!
1~n
21
!CO
322�
PuO
2~C
O3) n2
22
n~n
51,
2,3 !
Fro
mth
eso
lubi
lity
data
,th
eau
thor
sob
tain
edth
eov
eral
lst
abili
tyco
nsta
nts
ofth
eP
uO2~
CO
3) n2
22
aco
mpl
exes
asb
15
108.
660.
3 ,b
2
510
13.6
60.
7 ,an
db
35
1018
.26
0.4 ,
and
the
solu
bilit
ypr
oduc
tof
PuO 2
CO
3as
Ksp
510
2(1
3.56
0.3)
,al
lat
3.0
mol
dm2
3io
nic
stre
ngth
.
Me
Iso
Pu
1 ~5 mi
bu pH co ad co by ab co us ha 0.0
ele
Th
dif
titr
or hy
J
e
diss
ocia
tion
cons
tant
sof
carb
onic
acid
.c M
easu
rem
ents
atpa
rtia
lpre
ssur
eof
CO
2of
1%.
d Mea
sure
men
tsat
part
ialp
ress
ure
ofC
O2
of10
0%.
e Ksp
5@P
uO221
#@C
O322
#;th
eav
erag
eva
lue
from
mea
sure
men
tsat
1%an
d10
0%pa
rtia
lpr
essu
reof
CO
2w
asre
port
edby
the
auth
ors
as10
2(1
3.98
60.
12)
mol
2dm
26 .
Thi
sw
asre
calc
ulat
edby
the
auth
ors
toze
roio
nic
stre
ngth
byus
ing
the
spec
ific
ion
inte
ract
ion
theo
rypr
oced
ure,
toob
tainK
spo5
102
(14.
846
0.10
)m
ol2
dm2
6 .
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
pHtit
ratio
nw
asus
ed.
Apo
rtio
nof
the
PuO 221
ckso
lutio
nw
asdi
lute
dw
ith0.
1m
oldm2
3N
aClO
4,ut
raliz
edto
pH7
with
NaO
H,
and
CO 2ga
sw
asbu
bble
dou
ghth
eso
lutio
n.A
whi
tepr
ecip
itate
ofP
uO 2CO
3w
asm
ed.
The
prec
ipita
tion
proc
edur
ean
dsu
bseq
uent
solu
bilit
yas
urem
ents
wer
epe
rfor
med
ina
clos
edgl
ass
vess
elw
iths
pass
ing
thro
ugh
unde
rpa
rtia
lpre
ssur
eof
CO
2of
1%O
2/A
rm
ixtu
re!
or10
0%.
The
pHof
the
solu
tion
inco
ntac
tth
PuO
2CO
3w
asad
just
edst
epw
ise
byad
ditio
nof
0.1
mol
23
HC
lO4
orN
aOH
.T
hega
sw
asbu
bble
dth
roug
hth
ess
elco
ntin
uous
ly.
The
pHw
asm
easu
red
with
aR
OS
S-t
ype
mbi
natio
nel
ectr
ode
cont
aini
ng3
mol
dm23
NaC
lO4
asa
ing
solu
tion.
The
elec
trod
ew
asca
libra
ted
agai
nst
six
fere
ntbu
ffer
solu
tions
.T
hetim
eof
equi
libra
tion
afte
rea
chju
stm
ent
ofpH
was
not
repo
rted
.T
heeq
uilib
rium
plut
oniu
mnc
entr
atio
nin
the
satu
rate
dso
lutio
nw
asde
term
ined
byui
dsc
intil
latio
nco
untin
gto
obta
inth
eto
talp
luto
nium
ncen
trat
ion,
and
byU
Vsp
ectr
osco
pyto
obta
inth
eP
uO221
ncen
trat
ion.
The
solid
phas
esw
ere
char
acte
rized
byx-
ray
wde
rdi
ffrac
tion,
IR,
and
UV
spec
tros
copy
.
242 P
uof
99.9
%is
otop
icpu
rity
was
used
.T
heP
uO 221st
ock
solu
tion
was
prep
ared
byfu
min
gw
ithco
ncen
trat
edH
ClO
4in
apl
atin
umcr
ucib
le,
and
subs
eque
nttr
eatm
ent
with
ozon
ean
dA
rga
s.T
heva
lenc
yst
ate
ofP
uin
the
stoc
kso
lutio
nw
asve
rified
byco
mpa
ring
Pu
conc
entr
atio
nsas
dete
rmin
edby
spec
trop
hoto
met
ryan
dliq
uid
scin
tilla
tion
coun
ting.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
prec
isio
nno
tre
port
ed.
650650 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~V
I!di
oxoc
arbo
nate
;P
uO 2C
O3;
@392
92-1
0-9#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
I.P
asha
lidis
,W
.R
unde
,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a61
,14
1–
6~1
993!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
5p
2(p
artia
lpr
essu
re)/
%51
and
100
c 3/m
oldm
23 5
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
PuO
2CO
3in
0.1
mol
dm2
3so
lutio
nof
NaC
lO4
at22
°C,
and
1%or
100%
part
ialp
ress
ure
ofC
O2a
pH2
log @
CO
322#b
2lo
g @P
uO221
#c2
log
Ksp
epH
2lo
g @C
O322
#b2
log @
PuO
221#d
2lo
gK
spe
4.23
11.1
72.
9414
.11
3.51
10.6
03.
4014
.00
4.24
11.1
42.
8113
.95
3.70
10.2
23.
7713
.99
4.28
11.0
62.
9413
.99
3.84
9.94
3.91
13.8
5
4.31
10.9
93.
067
14.0
63.
859.
924.
0313
.95
4.33
10.9
63.
067
14.0
23.
899.
844.
0313
.87
4.35
10.9
32.
8113
.74
4.01
9.60
4.54
14.1
4
4.51
10.6
03.
2513
.85
4.30
9.02
5.18
14.2
0
4.53
10.5
63.
2513
.81
4.65
10.3
23.
8614
.18
4.75
10.1
23.
8814
.00
5.22
9.19
4.73
13.9
2
5.55
8.52
5.64
14.1
6
5.58
8.47
5.47
13.9
4
5.60
8.43
5.47
13.8
9
5.60
8.41
5.64
14.0
5
5.62
8.39
5.47
13.8
5
a Equ
ilibr
ium
solid
phas
ew
asP
uO 2C
O3,
@392
92-1
0-9#,
inal
lso
lutio
ns.
The
solid
was
mos
tst
able
unde
rva
cuum
.It
chan
ged
with
in2
wee
ksin
HC
O 32so
lutio
n,an
dw
asno
tsta
ble
atal
lwhe
nin
cont
actw
ithai
r.M
easu
rem
ents
wer
eal
sope
rfor
med
at0.
03%
part
ialp
ress
urof
CO
2.A
tth
ispr
essu
resl
ight
tran
sfor
mat
ion
ofP
uO 2CO
3in
toP
uO2~
OH
! 2in
the
surf
ace
laye
rof
PuO 2
CO
3cr
ysta
lsto
okpl
ace,
asde
duce
dby
the
auth
ors
from
the
depe
nden
ceof
log
@PuO
221
#ve
rsus
pHpl
ots
obta
ined
atdi
ffere
ntpa
rtia
lpre
ssur
esof
CO
2.b C
once
ntra
tion
offr
eeca
rbon
ate
ion~m
oldm
23 !.
Itw
asca
lcul
ated
from
the
mea
sure
dpH
,pa
rtia
lpre
ssur
eof
CO
2,H
enry
cons
tant
,an
d
Me
Iso
sto
ne thr
for
me
ga ~C wi
dm ve co fill
dif
ad co liq co co po
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
3.69
10.1
83.
774.
578.
425.
09
3.70
10.1
63.
775.
167.
245.
11
3.81
9.94
3.97
5.18
7.20
5.27
3.83
9.90
3.91
5.73
6.10
5.27
3.84
9.88
4.03
5.94
5.68
5.07
3.85
9.86
3.91
6.04
5.48
4.77
3.88
9.80
4.03
a At
part
ialp
ress
ure
ofC
O 2of
1%an
d10
0%,
the
solid
phas
ew
asP
uO2C
O3,
@392
92-1
0-9#,
inal
lsol
utio
ns.
b Equ
ilibr
ium
conc
entr
atio
nof
the
carb
onat
eio
n;it
was
calc
ulat
edby
the
auth
ors
from
the
equa
tion
log
@CO
322#5
Slo
gK
1lo
gp(
CO
2)1
2pH
,w
here
Slo
gK
52
17.5
5(6
0.09
)in
clud
esH
enry
cons
tant
for
CO
2,an
ddi
ssoc
iatio
nco
nsta
nts
ofca
rbon
icac
id.
c Con
cent
ratio
nsin
mol
dm23 .
Add
ition
alin
form
atio
n:U
sing
the
repo
rted
solu
bilit
yda
ta,
and
the
solu
bilit
ypr
oduc
tof
PuO
2CO
3fr
omth
eau
thor
s’ea
rlier
wor
kof
102(1
3.98
60.
12) ,1
the
over
all
stab
ility
cons
tant
sfo
rth
efo
llow
ing
carb
onat
ocom
plex
esof
the
PuO
221io
nw
ere
calc
ulat
ed:
PuO 2
CO
3,b
15
108.
760.
3 ;P
uO2~
CO
3!222
,b
25
1014
.16
0.5 ;
and
PuO
2~C
O3!
342,
b35
1017
.86
0.2 .
By
appl
ying
the
ion
inte
ract
ion
Pitz
erap
proa
ch,
the
ther
mod
ynam
icso
lubi
lity
prod
uct
ofP
uO2C
O3
was
obta
ined
asKspo
510
214
.85m
ol2
dm2
6 .
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
lubi
lity
expe
rimen
tsw
ere
cond
ucte
das
pHtit
ratio
nsin
0.1
ldm
23
NaC
lO4
unde
r1~
CO
2/A
rm
ixtu
re!
or10
0%pa
rtia
les
sure
ofC
O 2in
acl
osed
glas
sve
ssel
.A
port
ion
ofth
e~V
I!st
ock
solu
tion
was
adde
dto
0.1
mol
dm23
NaC
lO4
lutio
n,th
epH
was
adju
sted
to7
with
0.1
mol
dm23
NaO
H,
dC
O 2ga
sw
asbu
bble
dth
roug
hit.
Aw
hite
crys
talli
neec
ipita
teof
PuO
2CO
3w
asfo
rmed
.T
hepH
was
mea
sure
dby
ing
com
bina
tion
glas
sel
ectr
odes~R
OS
S-t
ype,
Orio
n!w
ith3
ldm
23
NaC
lO4
asa
fillin
gso
lutio
n,w
hich
wer
eca
libra
ted
ains
tsi
xst
anda
rdbu
ffer
solu
tions
inth
epH
rang
eof
2–
8.e
equi
libriu
mco
ncen
trat
ion
ofP
u~VI!
atea
chpH
was
term
ined
byliq
uid
scin
tilla
tion
coun
ting
and
abso
rptio
nec
tros
copy
at83
0.4
nmto
obta
into
talc
once
ntra
tion
ofP
ud
conc
entr
atio
nof
PuO 221
,re
spec
tivel
y.T
heso
lidph
ases
rech
arac
teriz
edby
IRsp
ectr
osco
pyan
dx-
ray
diffr
actio
n.
244 P
uof
99.9
%is
otop
icpu
rity
was
used
topr
epar
eth
eP
uO2C
O3
solid
phas
e.P
luto
nium~
VI!
stoc
kso
lutio
n~0.
01m
oldm
23 !
was
prep
ared
byfu
min
gw
ithco
ncen
trat
edH
ClO
4in
apl
atin
umcr
ucib
le,
and
furt
her
oxid
atio
nby
ozon
e.T
hepu
rity
ofth
eva
lenc
yst
ate
ofP
uw
asve
rified
byco
mpa
ring
ofpl
uton
ium
conc
entr
atio
nsas
dete
rmin
edby
abso
rptio
nsp
ectr
osco
pyan
dliq
uid
scin
tilla
tion
coun
ting.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.P
asha
lidis
,W.R
unde
,and
J.I.
Kim
,Rad
ioch
im.A
cta
61,1
41~1
993!
.
651651IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~V
I!di
oxoc
arbo
nate
;P
uO 2C
O3;
@392
92-1
0-9#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
I.P
asha
lidis
,K
.R
.C
zerw
insk
i,T
.F
angh
anel
,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a76,
55–
62~1
997!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
5p
2(p
artia
lpre
ssur
eof
CO 2)
/%5
1an
d10
0c 3
/mol
dm2
3 50.
1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
PuO
2CO
3as
afu
nctio
nof
carb
onat
eio
nco
ncen
trat
ion
in0.
1m
oldm
23
NaC
lO4
at22
°Ca
pH2
log @
CO
322#b,
c2
log @
PuO
221#c
pH2
log @
CO
322#b,
c2
log @
PuO
221#c
Mea
sure
men
tsat
1%pa
rtia
lpre
ssur
eof
CO
2
4.22
11.1
22.
944.
999.
584.
09
4.23
11.1
02.
815.
219.
144.
73
4.27
11.0
22.
945.
578.
425.
09
4.30
10.9
63.
075.
578.
425.
09
4.32
10.9
23.
077.
065.
444.
69
4.34
10.8
82.
817.
065.
444.
71
4.50
10.5
63.
257.
404.
764.
34
4.52
10.5
23.
257.
424.
724.
60
4.64
10.2
83.
867.
474.
624.
47
4.69
10.1
83.
777.
534.
504.
31
4.70
10.1
63.
777.
544.
484.
30
4.74
10.0
83.
887.
634.
303.
85
4.81
9.94
3.97
7.64
4.28
4.14
4.83
9.90
3.91
7.72
4.12
3.76
4.84
9.88
4.03
7.81
3.94
3.58
4.85
9.86
3.91
7.82
3.92
3.36
4.88
9.80
4.03
7.87
3.82
3.67
Mea
sure
men
tsat
100%
part
ialp
ress
ure
ofC
O2
3.49
10.5
83.
403.
999.
584.
09
3.50
10.5
63.
404.
578.
425.
09
Me
So
mo
pr Pu
so an pr us mo
ag Th
de sp an we
J
NaC
lsol
utio
nof
the
desi
red
conc
entr
atio
nco
ntai
ned
ina
loos
ely
clos
edve
ssel
,w
ithC
O 2ga
sbu
bblin
gth
roug
h.S
olut
ion
pHw
asad
just
edby
addi
tion
ofN
aOH
/NaC
lor
HC
l/NaC
lso
lutio
ns.
The
elec
trod
ew
asca
libra
ted
agai
nst
buffe
rso
lutio
ns.
Equ
ilibr
atio
ntim
ew
asno
tre
port
ed.
Sam
ples
with
draw
nfr
omth
esa
tura
ted
solu
tions
wer
efil
tere
dus
ing
250
nmpo
resy
ringe
filte
rs~M
illip
ore
!,an
dth
eP
u~VI!
conc
entr
atio
nw
asde
term
ined
in25m
Lal
iquo
tsof
the
filtr
ate
byliq
uid
scin
tilla
tion
coun
ting.
dryn
ess
with
conc
entr
ated
HC
lO 4.T
here
sidu
ew
asdi
lute
dw
ithw
ater
,th
eP
uco
ncen
trat
ion
was
dete
rmin
edby
liqui
dsc
intil
latio
nco
untin
g,an
dpl
uton
ium
oxid
atio
nst
ate
purit
yw
asve
rified
usin
gab
sorb
ance
spec
tros
copy
.P
uO2C
O3
was
prep
ared
bybu
bblin
gC
O 2ga
sth
roug
ha
stirr
edac
idic
stoc
kso
lutio
nfo
r3
–5
days
,w
ashi
ngth
ere
sulti
ngpr
ecip
itate
with
dist
illed
de-io
nize
dw
ater
,re
diss
olvi
ng,
and
repe
atin
gpr
ecip
itatio
n.O
zone
was
also
bubb
led
thro
ugh
the
susp
ensi
onfo
rth
efin
al2
days
tore
oxid
ize
any
plut
oniu
mre
duce
dby
radi
olys
is.
The
resu
lting
pale
tan
solid
was
char
acte
rized
usin
gpo
wde
rx-
ray
diffr
actio
n,ex
tend
edx-
ray
abso
rptio
nfin
est
ruct
ure
~EX
AF
S!,
and
diffu
sere
flect
ance
spec
tros
copy
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
erro
rof
Ksp
not
repo
rted
.
7.2.
Am
mon
ium
Tris
„ca
rbon
ato…
Dio
xopl
uton
ate
„V
I…„-4…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
mon
ium
tris~
carb
onat
o!di
oxop
luto
nate~
VI!
;H
4!4P
uO2~
CO
3) 3
;@3
6568
-63-
5#A
mm
oniu
mca
rbon
ate;
(NH 4!
2CO
3;@5
06-8
7-6#
Wat
er;
H 2O
;@7
732-
18-5#
L.E
.D
rabk
ina,
Rad
iokh
imiy
a2,
377
–8
~196
0!.
riabl
es:
Pre
pare
dby
:
K29
30w
2/m
ass%
:5
–25
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
(NH
4!4P
uO2~
CO
3!3
at20
°Cin
(NH 4
! 2C
O3
solu
tions
a
(NH
4!2C
O3
100w
2/m
ass%
)P
u~g
kg2
1 !b(N
H4!
4PuO
2~C
O3!
3
~gkg
21 !b,
c
53.
253.
807.
72
102.
001.
804.
16
150.
973
0.97
42.
13
200.
628
0.69
31.
45
250.
384
0.41
80.
877
hena
ture
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
ram
spe
rkg
satu
rate
dso
lutio
n.al
cula
ted
byco
mpi
ler
for
the
aver
age
ofth
etw
oso
lubi
lity
valu
esre
port
ed,
usin
gA
r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.(N
H 4!2C
O3
solu
tions
wer
est
irred
thso
lid(N
H4!
4NpO
2~C
O3!
3fo
r2
hw
hich
was
foun
dffi
cien
tto
reac
heq
uilib
rium
.M
etho
dof
anal
ysis
ofth
etu
rate
dso
lutio
nsw
asno
tre
port
ed.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
r!.S
olub
ility
:the
scat
ter
ofth
edu
plic
ate
mea
sure
men
tsin
dica
tes
aner
ror
of6
5%–
10%
~com
pile
r!.
652652 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~V
I!di
oxoc
arbo
nate
;P
uO 2C
O3;
@392
92-1
0-9#
~2!
Car
bon
diox
ide;
CO 2;
@124
-38-
9#~3
!S
odiu
mch
lorid
e;N
aCl;@7
647-
14-5#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
M.
P.
Neu
,S
.D
.R
eily
,an
dW
.H
.R
unde
,M
ater
.R
es.
Soc
.S
ymp.
Pro
c.46
5,75
9–
65~1
997!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
5p
2/%
~par
tialp
ress
ure!:
100
m3
/mol
kg2
1 :0.
1–
5.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
typr
oduc
tof
PuO
2CO
3in
NaC
lsol
utio
nsat
22°C
and
100%
part
ialp
ress
ure
ofC
O2a,
b
NaC
l(m
3/m
olkg
21 )
2lo
gK
spc
0.1
12.9
0.2
12.4
0.5
12.5
112
.3
212
.2
512
.3
a The
equi
libriu
mso
lidph
ase
was
confi
rmed
byus
ing
vario
ussp
ectr
osco
pic
met
hods
tobe
PuO
2CO
3,@3
9292
-10-
9#.b N
umer
ical
data
ofP
uO 2C
O3
not
repo
rted
.c K
sp5
@PuO
221#@
CO
322#;
Ksp
data
repo
rted
inm
ol2kg
22 .
Equ
ilibr
ium
carb
onat
eio
nco
ncen
trat
ion
was
calc
ulat
edas
log
@CO
322#5
log
K1
log
p(C
O2)
12
pH,
whe
reK
isth
eeq
uilib
rium
cons
tant
for
the
form
atio
nof
CO
322fr
omC
O2
gas
ineq
uilib
rium
with
NaC
lsol
utio
ns.
Add
ition
alin
form
atio
n:R
educ
tion
ofP
u~VI!
toP
u~V
!w
asob
serv
edsp
ectr
osco
pica
llyat
low
NaC
lcon
cent
ratio
ns.
The
Pu
~V!
pres
ent
inth
eso
lutio
ndi
spro
por-
tiona
ted
toP
u~VI!
~aq!
and
poly
mer
icP
u~IV
!hy
drox
ide.
On
equi
libra
tion
prol
onge
dup
to4
mon
ths,
the
equi
libriu
mso
lidph
ase
was
PuO
2CO
3.S
ince
equi
libra
tion
time
used
inso
lubi
lity
expe
rimen
tsw
asno
trep
orte
dit
isno
tcle
arho
w,a
ndif,
this
coul
dha
veaf
fect
edth
eK
spda
taat
low
NaC
lcon
cent
ratio
ns.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Sol
ubili
tyex
perim
ents
wer
epe
rfor
med
aspH
titra
tion
proc
edur
eus
ing
appr
oxim
atel
y50
mg
PuO 2C
O3
and
5m
LP
luto
nium
~VI!
stoc
kso
lutio
nw
aspr
epar
edby
diss
olvi
ng239 P
um
etal
in7
mol
mol
dm2
3H
ClO
4an
dfu
min
gth
eso
lutio
nto
near
Co
~1!
(N ~2!
~3!
Va
T/
10
(
a T b G c C Me
Iso
wi
su sa
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Sol
ubili
ty:
dupl
icat
em
easu
rem
ents
at40
and
50m
ass
%N
H4N
O3
indi
cate
aner
ror
ofup
to610
%~c
ompi
ler!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Tet
raam
mon
ium
tric
arbo
nato
diox
oplu
tona
te~V
I!;
H4!
4PuO
2~C
O3!
3;@3
6568
-63-
5#A
mm
oniu
mca
rbon
ate;~
NH
4!2C
O3;
@506
-87-
6#W
ater
;H 2
O;
@773
2-18
-5#
A.D
.Gel
man
,A.I
.Mos
kvin
,and
V.P
.Zai
tsev
a,R
adio
khim
iya
4,15
4–
62~1
962!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
438
–2.
19J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
of~N
H4!
4PuO
2~C
O3!
3in
~NH
4!2C
O3
solu
tions
a
~NH
4!2C
O3
(c2
/mol
dm2
3 )~N
H4!
4PuO
2~C
O3!
3
(103
c 1/m
oldm
23 )
0.43
821
.8
0.87
69.
29
1.31
46.
65
1.75
24.
26
2.19
03.
29
hena
ture
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
ditio
nali
nfor
mat
ion:
eau
thor
sst
ated
that
the
PuO 2~C
O3!
342io
nw
asun
stab
lein
solu
tion,
and
that
inth
esy
stem
stud
ied
Pu
~VI!
exis
ted
asP
uO 2~C
O3!
222in
satu
rate
dso
lutio
ns.
The
equi
libriu
mco
nsta
ntfo
rth
ere
actio
nP
uO2~
CO
3!342�
PuO
2~C
O3!
2221
CO
322w
asre
port
edto
be(8
.261.
1)10
23
mol
dm2
3 .
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sso
lid~NH
4!4P
uO2~
CO
3!3
was
rred
with
~NH
4!2C
O3
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
4–
6h
whi
chw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
ache
d.P
luto
nium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nss
dete
rmin
edra
diom
etric
ally
.
~NH
4!4P
uO2~
CO
3!3
was
prep
ared
byre
actin
g~NH
4!2P
u 2O
7w
ithco
ncen
trat
edso
lutio
nof~
NH
4!2C
O3.
The
salt
was
obta
ined
asa
dark
-gre
enso
lid.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
653653IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Am
mon
ium
tris~
carb
onat
o!di
oxop
luto
nate~
VI!
;~N
H4!
4PuO
2~C
O3!
3;@3
6568
-63-
5#~2
!A
mm
oniu
mni
trat
e;N
H 4N
O3;
@648
4-52
-2#~3
!W
ater
;H 2
O;
@773
2-18
-5#
L.E
.D
rabk
ina,
Rad
iokh
imiy
a2,
377
–8
~196
0!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
310
0w2
/mas
s%
:10
–64
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
~NH
4!4P
uO2~
CO
3!3
at20
°Cin
NH 4
NO
3so
lutio
nsa
NH
4NO
3
(100
w2
/mas
s%
)P
u~g
kg2
1 !b~N
H4!
4PuO
2~C
O3!
3
~gkg
21 !b,
d
102.
325.
02
200.
866
0.79
91.
803
300.
423
0.91
6
400.
152
0.19
20.
372
500.
070
0.08
30.
167
63.9
0.02
10.
0455
c0.
027
0.05
84
a The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.b G
ram
spe
rkg
satu
rate
dso
lutio
n.c S
olut
ion
satu
rate
dw
ithN
H 4NO
3;co
ncen
trat
ion
ofth
ela
tter
not
repo
rted
.d C
alcu
late
dby
com
pile
rus
ing
A r~P
u!5
239.
053.
Whe
retw
om
easu
rem
ents
wer
eav
aila
ble,
the
aver
age
valu
ew
asus
ed.
Add
ition
alin
form
atio
n:T
heau
thor
also
repo
rted
data
for
the
solu
bilit
yof~N
H4!
4PuO
2~C
O3!
3in
solu
tions
cont
aini
ng5
–25
mas
s%
NH
4NO
3w
hich
wer
esa
tura
ted
with
~NH
4!2C
O3.
The
data
are
not
give
nhe
resi
nce
the
conc
entr
atio
nof
~NH
4!2C
O3
inth
ese
solu
tions
was
not
repo
rted
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
NH 4N
O3
solu
tions
wer
est
irred
with
solid
~NH
4!4N
pO2~
CO
3!3
for
2h
whi
chw
asfo
und
suffi
cien
tto
reac
heq
uilib
rium
.M
etho
dof
anal
ysis
ofth
esa
tura
ted
solu
tions
was
not
repo
rted
.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
r!.
Co
~1!
~N ~2!
~3!
Va
T/
c 2 a T Ad
Th
the
3 Me
Iso
sti
for
re wa
J
7.4.
Hex
amm
inec
obal
t„III…
Sal
tof
Pen
taki
s„ca
rbon
ato…A
quap
luto
nate
„IV…„-6…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Bis
~hex
amm
inec
obal
t~III
!!nt
acar
bona
toaq
uapl
uton
ate
~IV
!;o~
NH
3!6# 2
@Pu~
CO
3!5H
2O#;
@#
Wat
er;
H 2O
;@7
732-
18-5#
orE
than
ol;
C 2H
6O;
@64-
17-5
#
K.
Uen
oan
dM
.H
oshi
,J.
Inor
g.N
ucl.
Che
m.32,
3817
–22
~197
0!.
riabl
es:
Pre
pare
dby
:
K:
293
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
of@C
o~N
H3!
6#2@P
u~C
O3!
5H2O
#in
wat
eran
det
hano
la
Sol
vent
Pu
~mg/
100
gso
lven
t!@C
o~N
H3!
6# 2
@Pu~
CO
3!5H
2O#
(105
c 1/m
oldm
23 )b
wat
er1.
12.
15
etha
nol
0.4
0.43
1
quili
briu
mso
lidph
ases
wer
eno
tin
vest
igat
ed.
alcu
late
dby
com
pile
rus
ing
A r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sof
dry
plut
oniu
mco
mpo
und
sal
low
edto
stan
din
the
solv
ent
for
24h.
The
satu
rate
dlu
tion
was
anal
yzed
radi
omet
rical
lyfo
rpl
uton
ium
cont
ent.
@Co~
NH
3!6# 2
@Pu~
CO
3!5H
2O#
was
prep
ared
bypr
ecip
itatio
nw
ithC
o~N
H3!
6Cl 3
from
1m
L2m
oldm
23 ~
NH
4!2C
O3
cont
aini
ng1
mg
Pu~
IV!.
The
prec
ipita
tew
asva
cuum
drie
dun
der
102
3m
mH
gat
room
tem
pera
ture
.A
naly
sis:
foun
d/ca
lcul
ated
for
@Co~
NH
3!6# 2
@Th~
CO
3!5H
2O#•
4H2O
~mas
s%!
:P
u26
.1/2
5.2,
Co~
NH
3!6
33.0
0/33
.9,
CO 3
30.0
/31.
5.P
luto
nium
~IV
!so
lutio
nin
2.5
mol
dm2
3w
aspr
epar
edby
redu
ctio
nof
Pu
~VI!
with
NaN
O2.
Co~
NH
3!6C
l 3w
aspr
epar
edac
cord
ing
toR
ef.
1.~NH
4!2C
O3
reag
ent
grad
e,so
urce
not
spec
ified
.D
istil
led
wat
eran
dre
agen
tgr
ade
etha
nolw
ere
used
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n62
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 W.
Bilt
z,Z
.A
norg
.A
llgem
.C
hem
.83,
177
~191
4!.
654654 JIRI HALA
7.3.
Am
mon
ium
Hyd
roxo
carb
onat
oD
ioxo
plut
onat
e„V
I…„-1…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Am
mon
ium
hydr
oxoc
arbo
nato
-dio
xopl
uton
ate
~VI!
;N
H4P
uO2~
CO
3!O
H;
@#
~2!
Am
mon
ium
carb
onat
e;~N
H4!
2CO
3;
@506
-87-
6#~3
!W
ater
;H 2
O;
@773
2-18
-5#
A.D
.Gel
man
,A.I
.Mos
kvin
,and
V.P
.Zai
tsev
a,R
adio
khim
iya
4,15
4–
62~1
962!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8J.
Hala
Exp
erim
enta
lDat
aS
olub
ility
at25
°Cof
NH 4
PuO
2~C
O3!
OH
inw
ater
The
solu
bilit
yat
25°C
ofN
H 4P
uO2~
CO
3!O
Hin
wat
erw
asre
port
edto
bec15
1.05
310
23
mol
dm2
3 .E
quili
briu
mso
lidph
ase
was
not
inve
stig
ated
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
solid
was
stirr
edin
wat
erfo
r4
–6
h.P
luto
nium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
radi
omet
rical
ly.
NH
4PuO
2~C
O3!
OH•3H
2Ow
aspr
epar
edby
diss
olvi
ng~N
H4!
2Pu 2
O7
in0.
17–
0.40
mol
dm2
3~N
H4!
2CO
3.F
rom
the
dark
-red
solu
tion
the
com
plex
salt
prec
ipita
ted
asa
pink
solid
onad
ditio
nof
aneq
ual
volu
me
of96
%et
hano
l.It
was
was
hed
seve
ralt
imes
from
exce
ssca
rbon
ate
with
70%
–80
%et
hano
land
ethe
r,an
ddr
ied
over
CaC
l2.
Ana
lysi
s~f
ound
/cal
cula
ted
for
the
trih
ydra
te,m
ass
%!:N
H4
5.3/
4.3,
Pu
54.1
2/56
.9,C
O 211
.4/1
0.5.
Sou
rce
and
purit
yof~
NH
4!2P
u 2O
7an
d~N
H4!
2CO
3no
tspe
cifie
d.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
Sol
ubili
ty:
prec
isio
nno
tre
port
ed.
Co
~1!
pe @C ~2!
Va
T/
a E b C Me
Iso
wa
so
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
drie
dby
aspi
ratio
n.A
llch
emic
als
used
wer
ere
agen
tgr
ade.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:va
lues
repo
rted
wer
eob
tain
edfr
omsi
ngle
dete
rmin
atio
ns;
this
did
not
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 L.R
.C
risle
r,J.
Inor
g.N
ucl.
Che
m.34
,32
63~1
972!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
II!
tris
~for
mat
e!;
Pu~
CH
O2!
3;@3
4501
-13-
8#F
orm
icac
id;
CH 2
O2;
@64-
18-6
#S
odiu
mfo
rmat
e;C
HO 2N
a;@1
41-5
3-7#
Hyd
roxy
alam
ine
hydr
ochl
orid
e;N
H 2OH•H
Cl;
@547
0-11
-1#W
ater
;H 2
O;
@773
2-18
-5#
J.D
.N
avra
til,
Roc
kwel
lIn
t.,G
olde
n,C
O~p
rivat
eco
mm
unic
atio
n!.
riabl
es:
Pre
pare
dby
:
K:
296
/mol
dm2
3 :0.
5–
2.0
/mol
dm2
3 :0.
1–
0.5
/mol
dm2
3 :0.
05
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
23°C
ofP
u~CH
O2!
3in
CH
2O2
/CH
O2N
aso
lutio
nsa
CH
2O2
2/m
oldm
23 )
CH
O2N
a(c
2/m
oldm
23 )
Pu~
CH
O2!
3
~gdm
23 !
Pu~
CH
O2!
3
(104
c 1/
mol
dm2
3 )bC
H2O
2
(c2
/mol
dm2
3 )C
HO
2Na
(c2
/mol
dm2
3 )P
u~C
HO
2!3
~gm
dm2
3 !
Pu~
CH
O2!
3
(104
c 1/
mol
dm2
3 )b
0.5
0.1
1.35
56.4
1.5
0.1
0.07
83.
27
0.2
0.39
16.3
0.2
0.04
01.
67
0.3
0.02
51.
040.
30.
023
0.96
3
0.4
0.02
10.
879
0.4
0.02
61.
09
0.5
0.02
00.
837
0.5
0.02
81.
17
1.0
0.1
0.08
23.
432.
00.
10.
066
2.76
0.2
0.02
41.
000.
20.
034
1.42
0.3
0.02
41.
000.
30.
029
1.21
0.4
0.01
70.
714
0.4
0.03
31.
38
0.5
0.02
71.
130.
50.
034
1.42
hena
ture
ofeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
All
solu
tion
cont
aine
d0.
05m
oldm
23
NH
2OH•H
Clt
om
aint
ain
the
Pu~III
!le
ncy
stat
e.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sP
u~C
HO
2!3
was
equi
libra
ted
with
CH
2O2
/CH
O2N
aso
lutio
nsof
the
desi
red
conc
entr
atio
nfo
r16
h.It
was
not
stat
edw
heth
erth
eso
lutio
nsw
ere
ther
mos
tate
ddu
ring
equi
libra
tion.
The
filte
red
satu
rate
dso
lutio
nsw
ere
anal
yzed
for
Pu
cont
ent
byan
unsp
ecifi
edm
etho
d.
Pu~
CH
O2!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.P
luto
nium
met
al~9
9.99
%!
was
diss
olve
din
conc
entr
ated
HC
l,an
dth
eso
lutio
nw
asfil
tere
dth
roug
ha
0.25m
mM
illip
ore
Sol
vine
rtfil
ter.
Inth
efil
trat
eth
epH
was
adju
sted
to8
byco
ncen
trat
edam
mon
iaso
lutio
n,an
dco
ncen
trat
edfo
rmic
acid
was
adde
dto
diss
olve
plut
oniu
mhy
drox
ide
and
prec
ipita
teP
u~C
HO
2!3.
The
prec
ipita
tew
asag
edfo
r1
h,w
ashe
dw
ithco
ncen
trat
edfo
rmic
acid
,an
ddr
ied
byas
pira
tion.
All
chem
ical
sus
edw
ere
reag
ent
grad
e.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:va
lues
repo
rted
wer
eob
tain
edfr
omsi
ngle
dete
rmin
atio
ns;
this
did
not
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 L.R
.C
risle
r,J.
Inor
g.N
ucl.
Che
m.34
,32
63~1
972!
.
655655IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
7.5.
Plu
toni
um„III…
For
mat
e
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
II!
tris
~for
mat
e!;
Pu~
CH
O2!
3;@3
4501
-13-
8#~2
!F
orm
icac
id;
CH 2
O2;
@64-
18-6
#~3
!H
ydro
xyal
amin
ehy
droc
hlor
ide;
NH 2O
H•H
Cl;
@547
0-11
-1#~4
!W
ater
;H 2
O;
@773
2-18
-5#
J.D
.N
avra
til,
Roc
kwel
lIn
t.,G
olde
n,C
O~p
rivat
eco
mm
unic
atio
n!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
6c 2
/mol
dm2
3 :0.
5–
23.5
c 3/m
oldm
23 :
0.05
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
23°C
ofP
u~CH
O2!
3in
form
icac
idso
lutio
nsa
CH
2O2
(c2
/mol
dm2
3 )P
u~C
HO
2!3
~gdm
23 !
Pu~
CH
O2!
3
(104
c 1/m
oldm
23 )b
0.5
1.81
48.8
1.0
1.40
37.7
20.
7620
.4
50.
4111
.0
100.
141
3.79
150.
052
1.40
23.5
0.01
50.
404
a The
natu
reof
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.A
llso
lutio
nco
ntai
ned
0.05
mol
dm2
3N
H2O
H•H
Clt
om
aint
ain
the
Pu~III
!va
lenc
yst
ate.
b Cal
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Pu
~CH
O2!
3w
aseq
uilib
rate
dw
ithfo
rmic
acid
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
for
16h.
Itw
asno
tst
ated
whe
ther
the
solu
tions
wer
eth
erm
osta
ted
durin
geq
uilib
ratio
n.T
hefil
tere
dsa
tura
ted
solu
tions
wer
ean
alyz
edfo
rP
uco
nten
tby
anun
spec
ified
met
hod.
Pu~
CH
O2!
3w
aspr
epar
edac
cord
ing
toR
ef.
1.P
luto
nium
met
al~9
9.99
%!
was
diss
olve
din
conc
entr
ated
HC
l,an
dth
eso
lutio
nw
asfil
tere
dth
roug
ha
0.25m
mM
illip
ore
Sol
vine
rtfil
ter.
Inth
efil
trat
eth
epH
was
adju
sted
to8
byco
ncen
trat
edam
mon
iaso
lutio
n,an
dco
ncen
trat
edfo
rmic
acid
was
adde
dto
diss
olve
plut
oniu
mhy
drox
ide
and
prec
ipita
teP
u~C
HO
2!3.
The
prec
ipita
tew
asag
edfo
r1
h,w
ashe
dw
ithco
ncen
trat
edfo
rmic
acid
,an
d
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
c 2 c 3 c 4 (c a T va b C Me
Iso
J
~196
7!.
7.6.
Plu
toni
um„III…
Oxa
late
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#A
mm
oniu
mox
alat
e;(N
H 4!2C
2O4;
@111
3-38
-8#W
ater
;H 2
O;
@773
2-18
-5#
A.
D.
Gel
man
,N
.N
.M
ator
ina,
and
A.
I.M
oskv
in,
Dok
l.A
kad.
Nau
kS
SS
R117
,88
–91
;~19
57!
Sov
.J.
At.
Ene
rgy3
,11
5–
20~1
957!
.
riabl
es:
Pre
pare
dby
:
K:
343
/mol
dm2
3 :0
–0.
70J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
~C2O
4!3
at70
°Cin
wat
eran
din
(NH 4!
2C2O
4so
lutio
nsa
NH
4!2C
2O4
2/m
oldm
23 )
Pu 2
~C2O
4!3
(104
c 1/m
oldm
23 )
(NH
4!2C
2O4
(c2
/mol
dm2
3 )P
u 2~C
2O4!
3
(104
c 1/m
oldm
23 )
00.
188
0.41
8.19
0.07
2.02
0.49
9.75
0.13
2.90
0.56
11.4
0
0.22
54.
700.
6215
.00
0.28
5.66
0.66
20.5
0
0.35
6.90
0.70
22.5
0
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
The
initi
also
lidus
edfo
rth
em
easu
rem
ents
isre
port
edto
beu 2
~C2O
4!3•
9H2O
.In
Ref
.1
the
crys
tallo
hydr
ate
ofpl
uton
ium~III
!ox
alat
ew
asre
port
edto
bede
cahy
drat
e,P
u2~
C2O
4!3•
10H
2O.
ditio
nali
nfor
mat
ion:
omth
ein
crea
seof
the
solu
bilit
yof
Pu
2~C
2O4!
3w
ithin
crea
sing
(NH 4
! 2C
2O4
conc
entr
atio
nth
eau
thor
sca
lcul
ated
the
cons
ecut
ive
tabi
lity
cons
tant
sof
the
Pu
2~C
2O4)
n(32
2n
)co
mpl
exes
.F
rom
the
solu
bilit
yof
Pu
2~C
2O4!
3in
wat
erth
eau
thor
sob
tain
edth
eso
lubi
lity
oduc
tof
the
salt
asKsp
5@P
u31#2
@C2O
422#3 5
2.53
310
222
mol
5dm
215
at70
°C.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.S
olut
ions
ofth
ede
sire
dco
ncen
trat
ion
rest
irred
with
exce
ssP
u2~
C2O
4!3•
9H2O
ina
ther
mos
tate
dth
for
4–
6h,
whi
chw
ases
tabl
ishe
das
suffi
cien
tto
reac
hui
libriu
m.
To
avoi
dox
idat
ion
ofP
u31,
ast
ream
ofN 2
gas
spa
ssed
thro
ugh
the
solu
tion
durin
gst
irrin
g.T
henc
entr
atio
nof
plut
oniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
77~1
965!
.
656656 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
II!
tris
~for
mat
e!;
Pu~
CH
O2!
3;@3
4501
-13-
8#~2
!F
orm
icac
id;
CH 2
O2;
@64-
18-6
#~3
!P
erch
loric
acid
;H
ClO 4
;@7
601-
90-3#
~4!
Sod
ium
perc
hlor
ate;
NaC
lO 4;@7
601-
89-0#
~5!
Wat
er;
H 2O
;@7
732-
18-5#
A.
V.
Ana
nev
and
N.
N.
Kro
t.R
adio
khim
iya26
,75
5–
8~19
84!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
2c 3
/mol
dm2
3 :0
–0.
1c 4
/mol
dm2
3 :1.
9–
2.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at25
°Cof
Pu~C
HO
2!3
inC
H2O
2/H
ClO
4/N
aClO
4so
lutio
ns
Sol
ubili
tyat
25°C
ofP
u~CH
O2!
3w
asm
easu
red
in0.
2m
oldm2
3so
lutio
nsof
form
icac
idco
ntai
ning
0–
0.1
mol
dm23
HC
lO4,
and
NaC
lO4
tom
aint
ain
ioni
cst
reng
thof
2.0
mol
dm23 .
The
resu
ltsw
ere
repo
rted
ingr
aphi
calf
orm
.F
rom
the
solu
bilit
yda
tath
eso
lubi
lity
prod
uct
ofP
u~CH
O2!
3w
asca
lcul
ated
tobe
5.463
102
12m
ol4
dm2
12at
ioni
cst
reng
thof
2.0
mol
dm23 .
Inth
ese
calc
ulat
ions
,th
eex
iste
nce
inth
esa
tura
ted
solu
tions
ofth
eP
u~C
HO
2!21
and
Pu~C
HO
2!21
com
plex
esw
asta
ken
into
acco
unt.
The
irst
abili
tyco
nsta
nts
wer
eal
soca
lcul
ated
.T
heeq
uilib
rium
solid
phas
ew
asP
u~C
HO
2!3,
@345
01-1
3-8#.
Als
ore
port
ed,
ingr
aphi
calf
orm
,w
asth
eso
lubi
lity
at25
°Cof
Pu~
CH
O2!
3in
sodi
umfo
rmat
e–
NaC
lO 4so
lutio
ns,a
ndth
eso
lubi
lity
ofP
u~CH
O2!
3in
wat
eras
7.143
102
3m
oldm
23 .
Itw
asno
tsta
ted
expl
icitl
yif
the
latte
rva
lue
was
obta
ined
byca
lcul
atio
nor
expe
rimen
tally
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Pu
~CH
O2!
3w
aseq
uilib
rate
dw
ithso
lutio
nsof
the
desi
red
conc
entr
atio
nfo
r10
hin
ther
mos
tate
dfla
sks.
Bef
ore
mea
sure
men
ts,
the
solu
tions
wer
efr
eed
from
air
bypa
ssin
gth
roug
hth
ema
stre
amof
argo
nga
s.In
the
filte
red
satu
rate
dso
lutio
ns,
pHw
asde
term
ined
pote
ntio
met
rical
ly,
and
the
conc
entr
atio
nof
Pu
~III
!sp
ectr
opho
tom
etric
ally
in;0.
6m
oldm
23
HC
lO4
at60
3nm
.T
hepH
met
erus
edw
asca
llibr
ated
agai
nst
2.0
mol
dm2
3
NaC
lO4.
Sol
idph
ases
wer
eid
entifi
edby
x-ra
ydi
ffrac
tion.
239 P
u~C
HO
2!3
was
prep
ared
from
fres
hly
prec
ipita
ted
Pu
~OH
! 3an
dco
ncen
trat
edfo
rmic
acid
acco
rdin
gto
Ref
s.1,
2.T
heso
lidpr
oduc
tw
asce
ntrif
uged
,w
ashe
dw
ith10
mol
dm23
form
icac
idan
d50
%et
hano
l,an
dke
ptov
erK
OH
.A
llot
her
chem
ical
sw
ere
reag
ent
grad
epr
oduc
ts.
Dou
bly
dist
illed
wat
erw
asus
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
erro
rno
tre
port
ed.
Ref
eren
ces:
1 L.R
.C
risle
r,J.
Inor
g.N
ucl.
Che
m.34
,32
63~1
972!
.2 F
.W
eige
lan
dN
.te
rMee
r,In
org.
Nuc
l.C
hem
.Le
tt.3,40
3
Co
~1!
~2!
~3!
Va
T/
c 2
((c a T P A
dF
rin
spr M
e
Iso
we
ba eq wa
co
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
e
equi
libriu
m.
To
avoi
dox
idat
ion
ofP
u31,
the
solu
tions
cont
aine
d10
–15
gdm2
3so
dium
form
alde
hyde
sulfo
xyla
te,
and
ast
ream
ofN 2
gas
was
pass
edth
roug
hth
eso
lutio
nsdu
ring
stirr
ing.
The
conc
entr
atio
nof
plut
oniu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
Tem
pera
ture
:no
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
77~1
965!
.
7.6.
1.E
valu
atio
nof
the
Pu
2„C
2O4…
3¿C
2H2O
4¿H
NO
3¿A
scor
bic
Aci
d
orH
ydra
zine
¿H
2OS
yste
m
mpo
nent
s:E
valu
ator
:
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#A
scor
bic
acid
;C 6
H8O
6;@5
0-81
-7#;
orH
ydra
zine
;N 2
H4;
02-0
1-2#
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
The
solu
bilit
yof
Pu 2~
C2O
4!3
inox
alic
acid
–H
NO 3
solu
tions
has
been
stud
ied
inth
ree
refe
renc
es.
Che
neau
1re
port
edte
mpe
ratu
repe
nden
ceof
the
solu
bilit
yat
one
fixed
HN
O3
and
oxal
icac
idco
ncen
trat
ion
whi
leH
asilk
areta
l.2an
dB
urne
yan
dP
orte
r3
mea
sure
dth
elu
bilit
yof
Pu 2
~C2O
4!3
asa
func
tion
ofox
alic
acid
conc
entr
atio
nfo
rva
rious
HN
O3
conc
entr
atio
nsat
one
tem
pera
ture
,i.e
.,at
298.
1an
d4.
1K
,re
spec
tivel
y.A
llm
easu
rem
ents
wer
epe
rfor
med
inth
epr
esen
ceof
are
duci
ngag
ent,
eith
eras
corb
icac
id2,
3or
hydr
azin
e,1to
sure
the
triv
alen
tst
ate
ofpl
uton
ium
.T
here
sults
inR
ef.
3w
ere
repo
rted
ingr
aphi
calf
orm
only
.A
lthou
ghth
epu
blis
hed
data
allo
wfo
rra
ther
limite
dco
mpa
rison
,it
can
clea
rlybe
seen
from
som
esy
stem
s~0
.1m
oldm
23
C2H
2O4/
2.0
mol
dm2
3H
NO
3;0.
2m
oldm
23
H2O
4/1.
5or
2.0
mol
dm2
3H
NO
3!th
atth
eda
taof
Bur
ney
and
Por
ter
3ar
ehi
gher
than
thos
eof
Has
ilkaret
al.2
bya
fact
orof
upto
2.ee
ms
that
this
disc
repa
ncy
corr
elat
esw
ithth
eeq
uilib
ratio
ntim
eus
ed,i
.e.,
16h
inR
ef.3
and
1h
only
inR
ef.2
.The
only
mea
sure
men
tC
hene
au1th
atca
nbe
com
pare
dw
ithth
ose
ofR
efs.
2,3,
i.e.,
that
take
nin
0.2
mol
dm2
3C
2H2O
4/1.
45m
oldm
23
HN
O3,
seem
sto
agre
ell
with
that
obta
ined
inR
ef.
3fo
r0.
2m
oldm2
3C
2H2O
4/1.
5m
oldm
23
HN
O3,
alth
ough
Che
neau
used
equi
libra
tion
time
of30
min
ly.
Unc
erta
inty
inte
mpe
ratu
rem
ayal
sobe
impo
rtan
tfo
rth
epu
blis
hed
solu
bilit
yda
tasi
nce
Che
neau
1sh
owed
that
the
solu
bilit
yof
2~C
2O4!
3is
dist
inct
lyte
mpe
ratu
rede
pend
ent.
With
resp
ect
ofth
isit
may
bere
leva
ntto
note
that
itis
not
clea
rfr
omth
epu
blis
hed
orm
atio
nw
heth
erB
urne
yan
dP
orte
r3
perf
orm
edeq
uilib
ratio
nin
ath
erm
osta
ted
appa
ratu
s,an
dth
atH
asilk
are
ta
l.2de
scrib
edth
epe
ratu
reof
thei
rm
easu
rem
ents~298
.1K!
asap
prox
imat
ero
omte
mpe
ratu
re.
Mor
eove
r,it
isap
pare
ntfr
omda
tain
Ref
.3
that
the
lubi
lity
ofP
u 2~C
2O4!
3in
oxal
icac
id–
HN
O 3so
lutio
nsw
as,
toso
me
exte
nt,
depe
nden
ton
asco
rbic
acid
conc
entr
atio
n.T
heev
alua
tor
sum
edth
isto
bedu
eto
the
form
atio
nof
solu
ble
Pu
~III
!co
mpl
exes
with
asco
rbic
acid
inth
esa
tura
ted
solu
tions
.T
akin
gal
lth
isin
toco
unt,
the
syst
emw
ould
obvi
ousl
yne
eda
thor
ough
rein
vest
igat
ion
with
part
icul
arem
phas
ison
equi
libra
tion
time,
tem
pera
ture
cont
rol,
dth
ety
pean
dco
ncen
trat
ion
ofth
ere
duci
ngag
ent
used
.F
orth
isre
ason
,no
neof
the
publ
ishe
dda
taca
nbe
reco
mm
ende
dal
thou
ghth
eta
ofB
urne
yan
dP
orte
r,3
ifdi
gitiz
edfr
omth
egr
aphi
calr
epre
sent
atio
n,co
uld
serv
eas
are
ason
able
appr
oxim
atio
nfo
rth
eco
nditi
ons
ed.
fere
nces
:
.C
hene
au,
Rep
ort
CE
A-R
-410
9,19
71.
.P
.H
asilk
ar,
N.
B.
Khe
deka
r,K
.C
hand
er,
A.
V.
Jadh
av,
and
H.
C.
Jain
,J.
Rad
ioan
al.
Nuc
l.C
hem
.18
5,11
9~1
994!
.
.A
.B
urne
yan
dJ.
A.
Por
ter,
Inor
g.N
ucl.
Che
m.
Lett.3,
79~1
967!
.
657657IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#~2
!P
otas
sium
oxal
ate;
K 2C2O
4;@5
83-5
2-8#
~3!
Pot
assi
umch
lorid
e;K
Cl;@7
447-
40-7#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
A.
D.
Gel
man
,N
.N
.M
ator
ina,
and
A.
I.M
oskv
in,
Dok
l.A
kad.
Nau
kS
SS
R117
,88
–91
~195
7!;
Sov
.J.
At.
Ene
rgy3
,11
5–
20~1
957!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0
–2.
41J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
~C2O
4!3
at20
°Cin
wat
eran
din
K 2C2O
4so
lutio
nsa,
b
K2C
2O4
(c2
/mol
dm2
3 )P
u 2~C
2O4!
3
(104
c 1/m
oldm
23 )
K2C
2O4
(c2
/mol
dm2
3 )P
u 2~C
2O4!
3
(104
c 1/m
oldm
23 )
00.
0432
0.6
10.1
0.01
0.35
30.
817
.1
0.02
50.
754
0.9
22.7
0.05
1.00
1.2
34.6
0.07
51.
091.
5159
.1
0.10
1.55
1.81
84.5
0.2
2.7
2.00
106
0.3
4.04
2.41
187
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.T
hein
itial
solid
used
for
the
mea
sure
men
tsis
repo
rted
tob
Pu 2
~C2O
4!3•
9H2O
.In
Ref
.1
the
crys
tallo
hydr
ate
ofpl
uton
ium~III
!ox
alat
ew
asre
port
edto
beth
ede
cahy
drat
e,P
u2~
C2O
4!3•
10H
2O.
b Inso
lutio
nsco
ntai
ning
0.01
–1.
5m
oldm2
3K
2C2O
4io
nic
stre
ngth
was
mai
ntai
ned
atan
unsp
ecifi
edco
nsta
ntva
lue
byus
ing
KC
l.
Add
ition
alin
form
atio
n:F
rom
the
incr
ease
ofth
eso
lubi
lity
ofP
u2~
C2O
4!3
with
incr
easi
ngK 2
C2O
4co
ncen
trat
ion
the
auth
ors
calc
ulat
edth
eco
nsec
utiv
ein
stab
ility
cons
tant
sof
the
Pu~C
2O4)
n(32
2n
)co
mpl
exes
.F
rom
the
solu
bilit
yof
Pu
2~C
2O4!
3in
wat
erth
eau
thor
sob
tain
edth
eso
lubi
lity
prod
uct
ofth
esa
ltas
Ksp
5@P
u31#2
@C2O
422#3 5
1.62
310
225
mol
5dm
215
at20
°C.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsof
the
desi
red
conc
entr
atio
nw
ere
stirr
edw
ithex
cess
Pu
2~C
2O4!
3•9H
2Oin
ath
erm
osta
ted
bath
for
4–
6h,
whi
chw
ases
tabl
ishe
das
suffi
cien
tto
reac
h
Not
hing
spec
ified
.
Est
imat
edE
rror
:
Co
~1!
~2!
~3!
~4!
@3 ~5!
de so 29 en a C2
Its
of we
on Pu
inf
tem
so as ac an da us Re
1 G 2 S 3 G
J
FIG
.21
.D
iplu
toni
um~I
II!–
tris
~oxa
late!
–ox
alic
acid
–ni
tric
acid
–w
ater
syst
em.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sP
u2~
C2O
4!3•
10H
2Ow
asad
ded
solu
tions
ofth
ede
sire
dco
mpo
sitio
n,an
dag
itate
din
plas
ticttl
eson
am
echa
nica
lsha
ker.
Asc
orbi
cac
idw
asus
edto
oid
oxid
atio
nof
Pu~I
II!.
At
inte
rval
sal
iquo
tsof
the
lutio
nsw
ere
with
draw
n,fil
tere
d,an
dan
alyz
edfo
rto
nium
,ac
id,
and
oxal
ate.
Ana
lyse
sw
ere
cont
inue
dun
tilsy
stem
reac
hed
equi
libriu
m,
whi
chto
ok16
h.T
henc
entr
atio
nsof
acid
and
oxal
ate
wer
ede
term
ined
bytit
ratio
nth
NaO
Han
dK
MnO
4so
lutio
ns,
resp
ectiv
ely.
The
met
hod
plut
oniu
man
alys
isw
asno
tsp
ecifi
ed.
239 P
u~III
!ox
alat
ew
aspr
epar
edby
diss
olvi
ngpu
reP
um
etal
insu
lfam
icac
id,
addi
ngto
this
solu
tion
0.05
mol
dm23
asco
rbic
acid
tost
abili
zeth
eP
u~III
!st
ate,
and
prec
ipita
ting
Pu
~III
!ox
alat
eby
addi
ng0.
1m
oldm
23
oxal
icac
idso
lutio
n.T
hepr
ecip
itate
was
filte
red,
was
hed
with
0.1
mol
dm23
oxal
icac
id,
and
air
drie
d.T
hepr
oduc
tw
asth
ebr
ight
blue
–gr
een
deca
hydr
ate.
All
othe
rch
emic
als
wer
ere
agen
tgr
ade.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
77~1
965!
.
658658 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#~2
!O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
~3!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~4
!A
scor
bic
acid
;C 6
H8O
6;@5
0-81
-7#
~5!
Wat
er;
H 2O
;@77
32-1
8-5#
G.A
.Bur
ney
and
J.A
.Por
ter,
Inor
g.N
ucl.
Che
m.L
ett.
3,79
–85
~196
7!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
4c 2
/mol
dm2
3 :0.
09–
0.3
c 3/m
oldm
23 :
0.5
–3.
1c 4
/mol
dm2
3 :0.
05
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at21
°Cof
Pu 2~
C2O
4!3
inH
NO
3–
C2H
2O4–
asco
rbic
acid
solu
tions
The
solu
bilit
yof
Pu 2~
C2O
4!3
at21
°Cin
HN
O 3–
C2H
2O4
solu
tions
cont
aini
ng0.
05m
oldm2
3as
corb
icac
idw
ere
pres
ente
din
grap
hica
lfo
rm~s
eeF
ig.
21!.
The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.P
resu
mab
lyit
was
the
deca
hydr
ate,
Pu 2
~C2O
4!3•
10H
2O,
@#,
whi
chw
asre
port
edto
prec
ipita
tefr
omH
NO
3-C
2H2O
4so
lutio
ns.1
Me
Iso
to bo av so plu
the
co wi
for
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
e
plut
oniu
mw
asde
term
ined
byaco
untin
g.T
hepr
oced
ure
was
repe
ated
until
equi
libriu
mw
asre
ache
d,w
hich
usua
llyto
okle
ssth
en30
min
.
acid
solu
tion.
Afte
r30
min
stirr
ing,
the
prec
ipita
tew
asfil
tere
dan
dw
ashe
dw
ith0.
1m
oldm2
3ox
alic
acid
.Sou
rce
and
purit
yof
othe
rch
emic
als
wer
eno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#A
scor
bic
acid
;C 6
H8O
6;@5
0-81
-7#
Wat
er;
H 2O
;@7
732-
18-5#
S.
P.
Has
ilkar
,N
.B
.K
hede
kar,
K.
Cha
nder
,A
.V
.Ja
dhav
,an
dH
.C
.Ja
in,
J.R
adio
anal
.N
ucl.
Che
m.
185,
119
–25
~199
4!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
02–
0.20
/mol
dm2
3 :0.
5–
2.0
/mol
dm2
3 :0.
01–
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
~C2O
4!3
at25
°Cin
HN
O 3–
C2H
2O4–
C6H
8O6
solu
tions
a
HN
O3
3/m
oldm
23 )
C2H
2O4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(104
c 1/
mol
dm2
3 !c
HN
O3
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(104
c 1/
mol
dm2
3 !c
0.5
0.20
10.7
0.22
41.
50.
2024
.10.
504
1.0
0.02
123.
42.
582.
00.
0213
79.5
28.8
0.05
51.5
1.08
0.05
417.
38.
73
0.10
19.9
0.41
60.
1017
1.7
3.59
0.20
14.6
0.30
50.
2052
.51.
10
0.20
10.9
0.22
80.
2044
.80.
937
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
The
initi
also
lidus
edfo
rth
em
easu
rem
ents
isre
port
edto
beu 2
~C2O
4!3•
10H
2O.
llso
lutio
nsco
ntai
ned
0.05
mol
dm23
asco
rbic
acid
.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
HN
O3
3/m
oldm
23 )
C6H
8O6
(c4
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(105
c 1/
mol
dm2
3 )cH
NO
3
(c3
/mol
dm2
3 )C
6H8O
6
(c4
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(104
c 1/
mol
dm2
3 !c
1.0
0.01
18.6
3.89
2.0
0.01
63.7
1.33
0.02
16.2
3.39
0.02
61.5
1.29
0.05
12.5
2.61
0.05
60.1
1.26
0.10
13.6
2.85
0.10
58.1
1.22
b All
solu
tions
cont
aine
d0.
20m
oldm2
3ox
alic
acid
.
659659IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#~2
!O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
~3!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~4
!H
ydra
zine
;N 2
H4;
@302
-01-
2#~5
!W
ater
;H 2
O;
@773
2-18
-5#
G.C
hene
au,C
ente
rP
rod.
Plu
toni
um,M
arco
ule,
Fra
nce,
Rap
port
CE
A-R
-410
9,19
71.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
6–
341
c 2/m
oldm
23 :
0.20
c 3/m
oldm
23 :
1.45
c 4/m
oldm
23 :
0.16
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
~C2O
4!3
inH
NO
3–
C2H
2O4–
N2H
4so
lutio
nsas
afu
nctio
nof
tem
pera
ture
a
Tem
pera
ture
~°C
!P
u~m
gdm
23 !
Pu 2
~C2O
4!3
(104
c 1/m
oldm
23 )b
2346
0.94
9
3067
1.40
4012
12.
53
5020
54.
29
6036
57.
67
6854
711
.5
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.T
hein
itial
solid
used
for
the
mea
sure
men
tsis
repo
rted
tob
Pu 2
~C2O
4!3•
10H
2O.
All
solu
tions
cont
aine
d1.
45m
oldm2
3H
NO
3,0.
20m
oldm
23
oxal
icac
id,
and
0.16
mol
dm23
hydr
azin
e.b C
alcu
late
dby
com
pile
rus
ing
A r~P
u!5
239.
053.
Add
ition
alin
form
atio
n:A
lso
repo
rted
,in
grap
hica
lfor
m,
was
the
solu
bilit
yof
Pu
2~C
2O4!
3at
23°C
inH
NO 3
–C
2H2O
4so
lutio
nsco
ntai
ning
eith
er0.
1m
oldm2
3
N2H
4or
0.05
mol
dm2
3as
corb
icac
id.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Sol
utio
nsof
the
desi
red
conc
entr
atio
nw
ere
stirr
edw
ithex
cess
Pu
2~C
2O4!
3•10
H2O
ina
ther
mos
tate
dba
th.
At
inte
rval
sal
iquo
tsw
ere
with
draw
n,fil
tere
d,an
d
Gre
enP
u 2~C
2O4!
3•10
H2O
was
obta
ined
bypr
ecip
itatin
gP
u31
from
aso
lutio
nco
ntai
ning
11g
dm23
Pu,
1.2
mol
dm2
3H
NO
3,an
d0.
05m
oldm
23
asco
rbic
acid
with
0.70
mol
dm23
oxal
ic
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
c 2 c 3 c 4 (c a T P b A c C (c
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dip
luto
nium
~III
!tr
is~o
xala
te!;
Pu 2
~C2O
4!3;
@331
6-65
-2#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Hyd
roge
nch
lorid
e;H
Cl;@
7647
-01-
0#A
scor
bic
acid
;C 6
H8O
6;@5
0-81
-7#
Wat
er;
H 2O
;@7
732-
18-5#
S.
P.
Has
ilkar
,N
.B
.K
hede
kar,
K.
Cha
nder
,A
.V
.Ja
dhav
,an
dH
.C
.Ja
in,
J.R
adio
anal
.N
ucl.
Che
m.
185,
119
–25
~199
4!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
02–
0.20
/mol
dm2
3 :0.
5–
2.0
/mol
dm2
3 :0.
01–
0.1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
~C2O
4!3
at25
°Cin
HN
O 3–
C2H
2O4–
C6H
8O6
solu
tions
a
HC
l
3/m
oldm
23 )
C2H
2O4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(104
c 1/
mol
dm2
3 )cH
Cl
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !
Pu 2
~C2O
4!3b
(104
c 1/
mol
dm2
3 )c
0.5
0.20
13.5
0.28
21.
50.
2032
.80.
686
1.0
0.02
120.
82.
532.
00.
0275
3.3
15.8
0.05
35.1
0.73
40.
0529
1.6
6.10
0.10
24.1
0.50
40.
1099
.52.
08
0.20
14.6
0.30
50.
2039
.70.
830
0.20
10.9
0.30
50.
2061
.61.
29
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
The
initi
also
lidus
edfo
rth
em
easu
rem
ents
isre
port
edto
beu 2
~C2O
4!3•
10H
2O.
llso
lutio
nsco
ntai
ned
0.05
mol
dm23
asco
rbic
acid
.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.A
bout
450
mg
ofP
u~I
II!
oxal
ate
wde
rw
aseq
uilib
rate
dw
ith10
mL
solu
tion
ofth
ede
sire
dm
posi
tion
for1
hin
40m
Leq
uilib
ratio
ntu
beus
ing
ach
anic
alsh
aker
.T
hepr
ecip
itate
was
allo
wed
tose
ttle
for
h,an
dce
ntrif
uged
.M
etho
dof
plut
oniu
mde
term
inat
ion
inth
esa
tura
ted
solu
tions
not
spec
ified
.
Plu
toni
umst
ock
solu
tion
in4
mol
dm23
HN
O3
was
prep
ared
from
plut
oniu
mfr
eshl
ypu
rified
byio
nex
chan
gepr
oced
ure
acco
rdin
gto
Ref
.1.
All
othe
rch
emic
als
used
wer
eof
A.R
./G.R
.gr
ade.
Pu 2~
C2O
4!3•
10H
2Ow
asob
tain
edby
prec
ipita
tion.
Plu
toni
umw
asre
duce
dto
Pu
31by
mea
nsof
asco
rbic
acid
soas
tom
aint
ain
0.05
mol
dm2
3ex
cess
ofth
ela
tter.
Cal
cula
ted
exce
ssov
erth
est
oich
iom
etric
amou
ntof
oxal
icw
asad
ded
soth
atth
esu
pern
atan
tco
ntai
ned
0.02
–0.
2m
oldm
23
oxal
icac
id.
The
prec
ipita
tew
asal
low
edto
settl
efo
r30
min
,an
dth
ence
ntrif
uged
.
Est
imat
edE
rror
:T
empe
ratu
re:
tem
pera
ture
repo
rted
asap
prox
imat
eva
lue
ofro
omte
mpe
ratu
re;
the
syst
ems
wer
eno
tth
erm
osta
ted
durin
geq
uilib
ratio
n.S
olub
ility
:fr
omth
edu
plic
ate
mea
sure
men
tsin
0.2
mol
dm2
3
oxal
icac
idso
lutio
nsth
eco
mpi
ler
estim
ates
prec
isio
nas
low
as6
20%
.
Ref
eren
ces:
1 J.L.
Ray
nan
dJ.
Whe
elw
right
,U
SA
EC
,R
epor
tH
W-5
5893
,19
59.
660660 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Abo
ut45
0m
gof
Pu
~III
!ox
alat
epo
wde
rw
aseq
uilib
rate
dw
ith10
mL
solu
tion
ofth
ede
sire
dco
mpo
sitio
nfor
1h
in40
mL
equi
libra
tion
tube
usin
ga
mec
hani
cals
hake
r.T
hepr
ecip
itate
was
allo
wed
tose
ttle
for
1/2
h,an
dce
ntrif
uged
.M
etho
dof
plut
oniu
mde
term
inat
ion
inth
esa
tura
ted
solu
tions
not
spec
ified
.
Plu
toni
umst
ock
solu
tion
in4
mol
dm23
HN
O3
was
prep
ared
from
plut
oniu
mfr
eshl
ypu
rified
byio
nex
chan
gepr
oced
ure
acco
rdin
gto
Ref
.1.
All
othe
rch
emic
als
used
wer
eof
A.R
./G.R
.gr
ade.
Pu 2~
C2O
4!3•
10H
2Ow
asob
tain
edby
prec
ipita
tion.
Plu
toni
umat
the
desi
red
conc
entr
atio
nw
asre
duce
dto
Pu
31by
mea
nsof
asco
rbic
acid
soas
tom
aint
ain
0.05
mol
dm2
3ex
cess
ofth
ela
tter.
Cal
cula
ted
exce
ssov
erth
est
oich
iom
etric
amou
ntof
oxal
icw
asad
ded
soth
atth
esu
pern
atan
tcon
tain
ed0.
02–
0.2
mol
dm2
3ox
alic
acid
.T
hepr
ecip
itate
was
allo
wed
tose
ttle
for
30m
inan
dth
ence
ntrif
uged
.
Est
imat
edE
rror
:T
empe
ratu
re:
tem
pera
ture
repo
rted
asap
prox
imat
eva
lue
ofro
omte
mpe
ratu
re;
the
syst
ems
wer
eno
tth
erm
osta
ted
durin
geq
uilib
ratio
n.S
olub
ility
:fr
omth
edu
plic
ate
mea
sure
men
tsin
0.2
mol
dm2
3
oxal
icac
idso
lutio
nsth
eco
mpi
ler
estim
ates
prec
isio
nas
low
as6
15%
.
Ref
eren
ces:
1 J.L.
Ray
nan
dJ.
Whe
elw
right
,U
SA
EC
,R
epor
tH
W-5
5893
,19
59.
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
c 2 c 3 c 4 (c a T P b A c C Me
Iso
po co me
1/2
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
n.mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#W
ater
;H 2
O;
@773
2-18
-5#
A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m,3,
956
–6
~195
8!;
Dok
l.A
kad.
Nau
kS
SS
R118
,49
3–
6~1
958!
.
riabl
es:
Pre
pare
dby
:
K:2
93/m
oldm
23 :0
–1.
0J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
u~C2O
4!2
inw
ater
and
HC
lO 4so
lutio
nsa
HC
lO4
2/m
oldm
23 )
Pu~
C2O
4!2•
6H2O
~mg
dm2
3 !P
u~C
2O4!
2
(104
c 1/m
oldm
23 )
Ksp
c
(1022
mol
3dm
29 )
0b
1.01
1.14
0.96
b
0.1
290.
5b
0.5
531.
017
0.75
b1.
294
1.0
811.
573
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
The
com
pile
ras
sum
esth
eso
lidph
ase
isth
ehe
xahy
drat
e,u~
C2O
4!2•
6H2O
,@2
6588
-74-
9#,w
hich
prec
ipita
tes
from
acid
icso
lutio
ns.
1
otre
port
ed.
sp5
@Pu4
1#@
C2O
422#2
;ca
lcul
ated
byth
eau
thor
sas
Ksp
5K
Ka12
Ka22
usin
gth
eeq
uilib
rium
cons
tant
for
the
reac
tion
u~C
2O4!
2•6H
2O~s
!14H
1�
Pu41
12C
2H2O
416H
2O,
K5
@Pu4
1#@
C2H
2O4#
2@H
1#2
45
13
102
11m
ol2
1dm
3 ,an
dth
edi
ssoc
iatio
nco
n-an
tsof
oxal
icac
idKa1
50.
108
andK
a25
6.43
102
5m
oldm
23
~sou
rce
ofth
eco
nsta
nts
not
repo
rted!.
ditio
nali
nfor
mat
ion:
epH
ofth
esa
tura
ted
solu
tions
ofP
u~C
2O4!
2in
wat
erw
as4.
460.
05.
By
anal
ogy
with
U~C2O
4!2,
2th
eau
thor
sex
plai
ned
this
inte
rms
acid
prop
ertie
sof
Pu~C
2O4!
2,i.e
.,by
the
equi
libriu
mP
u~C2O
4!2~
H2O
! n�
Pu~
C2O
4!~H
2O! n
211
H1
1C
2O422
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
eis
othe
rmal
met
hod3w
asus
ed.
Fre
shly
prec
ipita
ted
~C2O
4!2•
6H2O
was
agita
ted
with
wat
eror
HC
lO 4so
lutio
nsth
ede
sire
dco
ncen
trat
ion
ina
ther
mos
tate
dba
thfo
r4
–6
hic
hw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
toni
umco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
.
Pu~
C2O
4!2•
6H2O
was
obta
ined
bypr
ecip
itatio
nof
Pu
~IV
!w
ithox
alic
acid
,an
dw
ashi
ngth
epr
ecip
itate
with
wat
er.
1
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
from
the
mea
sure
men
tsin
wat
erth
eco
mpi
ler
estim
ates
the
prec
isio
nof6
10%
.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.2 A
.A
.G
rinbe
rgan
dI.
Pet
rzha
k,T
rudy
Rad
iev.
Inst
.,K
him
.G
eokh
im.,7
,50
~195
6!.
3 A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.3,
962
~195
8!.
661661IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
7.7.
Plu
toni
um„IV…
Oxa
late
7.7.
1.E
valu
atio
nof
the
Pu
„C
2O4…
2¿H
2OS
yste
m
Com
pone
nts:
Eva
luat
or:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Wat
er;
H 2O
;@7
732-
18-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
Thr
eeva
lues
for
the
solu
bilit
y,in
mol
dm23 ,
ofP
u~C
2O4!
2in
wat
erha
vebe
enpu
blis
hed,
i.e.,
4.71310
23
at29
8K
,11.
883
102
4at
300
K,2
and
1.03
310
24
at29
3K
.3T
here
seem
sto
beso
me
unce
rtai
nty
inth
ese
valu
es.
Firs
t,th
eva
lue
repo
rted
byD
awso
n1
ishi
gher
bym
ore
than
1or
der
ofm
agni
tude
com
pare
dto
othe
rtw
ova
lues
.The
reas
onfo
rth
isca
nnot
beid
entifi
edfr
omth
epu
blis
hed
info
rmat
ioP
artic
ular
ly,
mis
sing
info
rmat
ion
oneq
uilib
ratio
ntim
ein
Ref
.1
mak
esan
yco
nclu
sion
diffi
cult.
Inth
isre
spec
tit
isno
tew
orth
yth
ata
diffe
renc
eof
the
sam
ety
pebe
twee
nD
awso
n’s
and
othe
rau
thor
s’w
ork
isal
soob
serv
edfo
rth
eso
lubi
lity
ofP
u~C
2O4!
2in
aque
ous
solu
tions
ofH
NO 3
~see
Eva
luat
ion
for
the
Pu~C
2O4!
2–
HN
O3–
H2O
syst
em!.
Sec
ond,
itse
ems
that
anal
mos
ttw
ofol
din
crea
sein
the
solu
bilit
yon
goin
gfr
om29
3K3
to30
0K2
isra
ther
unus
ual.
For
thes
ere
ason
sno
neof
the
valu
espu
blis
hed
can
begi
ven
pref
eren
ce.
Ref
eren
ces:
1 J.K
.D
awso
n,A
.E.R
.E.~H
arw
ell!,
Rep
ort
C/M
92,
1950
.2 C
.J.
Man
dleb
erg,
K.
E.
Fra
ncis
,an
dR
.S
mith
,J.
Che
m.
Soc
.24
64~1
961!
.3 A
.I.
Mos
kvin
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,95
6~1
958!
;A
.D
.G
elm
anan
dA
.I.
Mos
kvin
,D
okl.
Aka
d.N
auk
SS
SR11
8,49
3~1
958!
.
Co
~1!
~2!
~3!
Va
T/
c 2 (c a T P b N c K P st Ad
Th
of Me
Th
Pu
of wh
plu
J
rs
is es is
FIG
.22
.P
luto
nium
~IV
!bi
s~ox
alat
e!–
nitr
icac
id–
wat
ersy
stem
.
Ref
eren
ces:
1 W.
H.
Rea
s,N
atl.
Nuc
l.E
nerg
yS
er.
Div
.IV1
4B,
423
~194
9!.
2 J.K
.D
awso
n,A
.E
.R
.E
.~Har
wel
l!,R
epor
tC
/M92
,19
50.
3 A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.3,
956
~195
8!.
4 A.
D.
Gel
man
and
A.
I.M
oskv
in,
Dok
l.A
kad.
Nau
kS
SS
R118,
493
~195
8!.
5 C.
J.M
andl
eber
g,K
.E
.F
ranc
is,
and
R.
Sm
ith,
J.C
hem
.S
oc.
2464
~196
1!.
6 G.
C.
Cha
prue
ta
l.,P
roce
edin
gsN
atio
nalC
hem
ical
Rad
ioch
emic
alS
ympo
sium
1981
,p.
561
~198
3!.
662662 JIRI HALA
7.7.
2.E
valu
atio
nof
the
Pu
„C
2O4…
2¿H
NO
3¿H
2OS
yste
m
Com
pone
nts:
Eva
luat
or:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~3
!W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
Sol
ubili
tyda
tafo
rth
issy
stem
are
avai
labl
ein
six
docu
men
ts,a
ndth
ere
sults
offiv
eof
them
are
sum
mar
ized
inF
ig.2
2.In
the
pape
ofM
andl
eber
get
al.,
5an
dR
eas1
the
solu
bilit
ies
wer
ere
port
edfo
rth
equ
arte
rnar
ysy
stem
Pu
~C2O
4!2–
HN
O3–
oxal
icac
id–
H 2O
,fr
omw
hich
the
valu
esfo
rze
roco
ncen
trat
ion
ofox
alic
acid
have
been
extr
acte
dfo
rth
esa
keof
com
paris
onw
ithot
her
Pu
~C2O
4!2–
HN
O3–
H2O
data
.E
xcep
tfo
rtw
osi
ngle
valu
esfo
r0.
75m
oldm2
3H
NO
3re
port
edat
298
K,1,2
othe
rm
easu
rem
ents
wer
eca
rrie
dou
tat
diffe
rent
tem
pera
ture
s.T
heda
tapu
blis
hed
byIn
dian
auth
ors
6ha
veno
tbe
enco
mpi
led
sinc
eth
eau
thor
sdi
dno
tre
port
the
tem
pera
ture
ofth
eir
mea
sure
men
ts,
and
pres
ente
dth
eso
lubi
lity
data
for
Pu
~C2O
4!2
inH
NO
3–
oxal
icac
idso
lutio
nsin
grap
hica
lfo
rmof
poor
qual
ity.
The
irva
lues
ofP
u~C2O
4!2
solu
bilit
yin
1an
d2
mol
dm2
3H
NO
3ar
ehi
gher
byro
ughl
y1
orde
rof
mag
nitu
deth
anth
ose
ofR
ef.
5.F
orth
eev
alua
tion
ofth
eso
lubi
lity
inth
eP
u~C
2O4!
2–
HN
O3–
H2O
syst
em,
the
obse
rvat
ion
ofR
eas
1se
ems
tobe
ofim
port
ance
.T
heau
thor
cons
ider
edhi
sso
lubi
lity
valu
eas
erro
neou
sly
high
due
toox
idat
ion
ofox
alic
acid
byH
NO
3un
der
cata
lytic
actio
nof
plut
oniu
m.
Thi
sm
aybe
the
reas
onfo
rth
edi
scre
panc
esam
ong
the
resu
ltsob
tain
edby
diffe
rent
auth
ors.
Afa
ctw
hich
seem
sto
supp
ort
this
view
that
aqu
alita
tive
corr
elat
ion
can
befo
und
betw
een
the
solu
bilit
yda
taan
dth
ere
spec
tive
equi
libra
tion
time
appl
ied.
Thu
sth
elo
wes
tval
uw
ere
repo
rted
byM
oskv
inan
dG
elm
an3,4
who
used
4–
6h
equi
libra
tion
time
whi
leR
eas
1an
dM
andl
eber
get
al.5
equi
libra
ted
the
syst
ems
for
1–
2w
eeks
,an
d2
–3
wee
ks,
resp
ectiv
ely.~D
awso
n2di
dno
tre
port
the
equi
libra
tion
time
used
.!
Thu
sit
seem
sth
atth
eP
u~C
2O4!
2–
HN
O3–
H2O
syst
emis
ano
nequ
ilibr
ium
one,
and
the
publ
ishe
dda
taca
nse
rve
asa
qual
itativ
ele
adon
ly.
The
cata
lytic
oxid
atio
npr
oces
sco
uld
wel
lbe
ofgr
eate
rim
prot
ance
than
are
the
diffe
renc
esin
tem
pera
ture
used
bydi
ffere
ntau
thor
s.N
otew
orth
yin
thre
spec
tse
ems
also
tobe
the
fact
that
whi
lese
vere
alst
udie
sw
ere
perf
orm
edon
the
solu
bilit
yof
U~C
2O4!
2in
aque
ous
solu
tions
ofhy
droc
hlor
ic,
perc
hlor
ic,
and
sulfu
ricac
ids,
nosu
chst
udy
has
been
repo
rted
onth
eU
~C2O
4!2–
HN
O3–
H2O
syst
em.
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
te,
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
J.K
.D
awso
n,R
epor
tA
.E
.R
.E
.,H
arw
ell,
C/M
92,
1960
.
riabl
es:
Pre
pare
dby
:
K:2
98/m
oldm
23 :0
.75
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofP
u~C2O
4!2
in0.
75m
oldm
23
HN
O3
isre
port
edto
be0.
13g
dm23
Pu
~5.3
3310
24
mol
dm2
3;
com
pile
r!.T
hem
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asno
trep
orte
dbu
tpre
sum
ably
itis
the
hexa
hydr
ate,
Pu
~C2O
4!2•
6H2O
,@26
588-
74-9#
,whi
chec
ipita
tes
out
from
acid
solu
tions
.1
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.G
lass
stop
pere
dco
ntai
ner
ntai
ning
the
acid
solu
tion
and
exce
ssP
u~I
V!
oxal
ate
was
ced
ina
met
alco
ntai
ner
toex
clud
elig
ht,
and
this
intu
rns
susp
ende
din
ath
erm
osta
ted
bath
.T
heco
ntai
ner
was
aken
man
ually
from
time
totim
e.T
heac
tual
equi
libra
tion
ew
asno
tre
port
ed.
The
satu
rate
dso
lutio
nw
asce
ntrif
uged
,d
aliq
uots
wer
eta
ken
for
the
dete
rmin
atio
nof
Pu
byaun
ting.
An
argo
npr
opor
tiona
lcha
mbe
rw
ith35
%ge
omet
ryan
elec
tros
cope
wer
eus
edfo
rco
untin
g.
Pu~
IV!
oxal
ate
was
prep
ared
byad
ding
oxal
icac
idcr
ysta
lsto
anal
mos
tne
utra
lso
lutio
nof
Pu~IV
!ni
trat
e.T
hepr
ecip
itate
was
cent
rifug
edan
dw
ashe
dtw
ice
with
wat
er.
Ana
lysi
sof
the
prod
uct
was
not
repo
rted
.
Est
imat
edE
rror
:T
empe
ratu
re:
not
repo
rted
.S
olub
ility
:65%
~aut
hor!.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.
663663IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~3
!W
ater
;H 2
O;
@773
2-18
-5#
A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m,3,
956
–6
~195
8!;
Dok
l.A
kad.
Nau
kS
SS
R118
,49
3–
6~1
958!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:293
c 2/m
oldm
23 :0
.025
–1.
0J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
u~C2O
4!2
inH
NO
3so
lutio
nsa
HN
O3
(c2
/mol
dm2
3 )P
u~C
2O4!
2•6H
2O~m
gdm
23 !
Pu~
C2O
4!2
(105
c 1/m
oldm
23 )
0.02
525
4.8
0.1
305.
7
0.25
5410
.3
0.5
7213
.8
1.0
144
27.5
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.T
heco
mpi
ler
assu
mes
the
solid
phas
ebe
the
hexa
hydr
aP
u~C
2O4!
2•6H
2O,
@265
88-7
4-9#
whi
chpr
ecip
itate
sfr
omac
idic
solu
tions
.1
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
isot
herm
alm
etho
d2w
asus
ed.
Fre
shly
prec
ipita
ted
Pu~
C2O
4!2•
6H2O
was
agita
ted
with
wat
eror
HC
lO 4so
lutio
nsof
the
desi
red
conc
entr
atio
nin
ath
erm
osta
ted
bath
for
4–
6h
whi
chw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
plut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
.
Pu~
C2O
4!2•
6H2O
was
obta
ined
bypr
ecip
itatio
nof
Pu
~IV
!w
ithox
alic
acid
,an
dw
ashi
ngth
epr
ecip
itate
with
wat
er.
1
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.2 A
.I.
Mos
kvin
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,96
2~1
958!
.
Co
~1!
~2!
~3!
Va
T/
c 2 co pr Me
Iso
co pla
wa
sh tim an co or
J
te,
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
Am
mon
ium
oxal
ate;
(NH 4!
2C2O
4;@1
113-
38-8#
Wat
er;
H 2O
;@7
732-
18-5#
J.K
.D
awso
n,R
epor
tA
.E
.R
.E
.,H
arw
ell,
C/M
92,
1960
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0
–0.
13J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofP
u~C2O
4!2
inw
ater
and~
NH
4!2C
2O4
solu
tions
a
~NH
4!2C
2O4
(c2
/mol
dm2
3 )P
u~g
dm2
3 !P
u~C
2O4!
2
(103
c 1/m
oldm
23 )b
01.
154.
81
0.02
1.38
5.78
0.07
32.
08.
37
0.13
2.62
10.9
2
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
repo
rted
.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.G
lass
stop
pere
dco
ntai
ner
ntai
ning
the
(NH 4
! 2C
2O4
solu
tion
and
exce
ssP
u~I
V!
oxal
ate
spl
aced
ina
met
alco
ntai
ner
toex
clud
elig
ht,
and
this
inn
was
susp
ende
din
ath
erm
osta
ted
bath
.T
heco
ntai
ner
was
aken
man
ually
from
time
totim
e.T
heac
tual
equi
libra
tion
ew
asno
tre
port
ed.
The
satu
rate
dso
lutio
nw
asce
ntrif
uged
,d
aliq
uots
wer
eta
ken
for
the
dete
rmin
atio
nof
Pu
byaun
ting.
An
argo
npr
opor
tiona
lcha
mbe
rw
ith35
%ge
omet
ryan
elec
tros
cope
wer
eus
edfo
rco
untin
g.
Pu~
IV!
oxal
ate
was
prep
ared
byad
ding
oxal
icac
idcr
ysta
lsto
anal
mos
tne
utra
lso
lutio
nof
Pu~IV
!ni
trat
e.T
hepr
ecip
itate
was
cent
rifug
edan
dw
ashe
dtw
ice
with
wat
er.
Ana
lysi
sof
the
prod
uct
was
not
repo
rted
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:6
5%~a
utho
r!.
664664 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Sul
furic
acid
;H 2
SO
4;@7
664-
93-9#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.3,
956
–61
~195
8!;
Dok
l.A
kad.
Nau
kS
SS
R118
,49
3–
6~1
958!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:293
c 2/m
oldm
23 :0
.012
5–
0.50
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
u~C2O
4!2
inH
2SO
4so
lutio
nsa
H2S
O4
(c2
/mol
dm2
3 )P
u~C
2O4!
2•6H
2O~m
gdm
23 !
Pu~
C2O
4!2
(104
c 1/m
oldm
23 )
0.01
2568
1.3
0.05
971.
9
0.25
200
5.0
0.50
418
8.0
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.T
heco
mpi
ler
assu
mes
the
solid
phas
ebe
the
hexa
hydr
aP
u~C
2O4!
2•6H
2O,
@265
88-7
4-9#,
whi
chpr
ecip
itate
sfr
omac
idic
solu
tions
.1
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
isot
herm
alm
etho
d2w
asus
ed.
Fre
shly
prec
ipita
ted
Pu~
C2O
4!2•
6H2O
was
agita
ted
with
H 2SO
4so
lutio
nsof
the
desi
red
conc
entr
atio
nin
ath
erm
osta
ted
bath
for
4–
6h
whi
chw
asfo
und
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
plut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edra
diom
etric
ally
.
Pu~
C2O
4!2•
6H2O
was
obta
ined
bypr
ecip
itatio
nof
Pu
~IV
!w
ithox
alic
acid
,an
dw
ashi
ngth
epr
ecip
itate
with
wat
er.
1
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.2 A
.I.
Mos
kvin
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,96
2~1
958!
.
Co
~1!
~2!
~3!
Va
T/
c 2 a T b C Me
Iso
co wa
tur
sh tim an co or
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
te,
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Pu
~C2O
4!2•
6H2O
was
shak
enfo
rat
leas
t10
days
ina
ther
mos
tat
with
solu
tions
ofth
ede
sire
dco
mpo
sitio
n.In
mos
tca
ses,
one
ortw
oal
iquo
tsw
ere
take
nfo
rP
ude
term
inat
ion
atth
een
dof
1w
eek,
and
then
agai
ntw
oto
four
aliq
uots
afte
rab
out
5da
ysto
ensu
reth
attr
ueeq
uilib
rium
solu
bilit
yva
lues
wer
eob
tain
ed.
Plu
toni
umw
asde
term
ined
bya
coun
ting
afte
rev
apor
atin
gth
eal
iquo
tsof
the
satu
rate
dso
lutio
nson
plat
inum
dish
es.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
05K
~aut
hor!.
Sol
ubili
ty:
from
the
para
llel
coun
ting
data
the
com
pile
res
timat
edth
epr
ecis
ion
tobe6
10%
inso
lutio
nsco
ntai
ning
0.00
68an
d0.
0179
mol
dm23
oxal
icac
id,
and6
5%at
high
erox
alic
acid
conc
entr
atio
ns.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
C.
J.M
andl
eber
g,K
.E
.F
ranc
is,
and
R.
Sm
ith,
J.C
hem
.S
oc24
64–
8~19
61!.
riabl
es:
Pre
pare
dby
:
K:
300
/mol
dm2
3 :0
–0.
6/m
oldm
23 :
0–
3.52
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
27°C
ofP
u~C2O
4!2
inC
2H2O
4/H
NO
3so
lutio
nsa
HN
O3
3/m
oldm
23 )
C2H
2O4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !b
Pu~
C2O
4!2
(104
c 1/
mol
dm2
3 )cH
NO
3
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )P
u~m
gdm
23 !b
Pu~
C2O
4!2
(104
c 1/
mol
dm2
3 )c
00
45.9
1.92
1.18
0.00
7116
.30.
682
00.
0533
414
.01.
610.
002
65.8
2.76
00.
2524
210
.11.
610.
015
150.
628
0.1
026
.61.
112.
000
128
5.36
0.1
0.5
132
5.52
2.00
0.05
9.7
0.40
6
0.5
069
.02.
892.
000.
2515
.10.
632
0.5
0.05
26.6
1.11
2.34
0.01
15.3
0.64
0
0.5
0.25
97.1
4.06
2.34
0.00
524
.91.
04
0.5
0.60
361
15.1
2.52
0.02
516
.70.
661
0.78
0.40
144
6.02
3.52
0.00
592
.13.
85
1.0
012
25.
103.
520.
0145
.81.
92
1.0
0.05
13.3
0.55
63.
520.
0518
0.75
3
1.0
0.25
36.9
1.54
3.52
0.1
18.2
0.76
1
1.0
0.60
133
5.56
3.52
0.5
31.4
0.89
5
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
not
repo
rted
.T
heco
mpi
ler
assu
mes
the
solid
phas
eis
the
hexa
hydr
ate,
u~C
2O4!
2•6H
2O,
@265
88-7
4-9#,
whi
chpr
ecip
itate
sat
25°C
from
C 2H2O
4/H
NO
3so
lutio
ns.1
the
orig
inal
docu
men
tth
epl
uton
ium
conc
entr
atio
nis
repo
rted
,ob
viou
sly
bym
ista
ke,
ing/
dm3 .
Inth
egr
aphi
calr
epre
sent
atio
nof
the
ata,
how
ever
,th
eau
thor
sre
port
the
solu
bilit
ies
inm
g/dm
3 ,w
hich
also
agre
esw
ithP
u~C2O
4!2
solu
bilit
yas
repo
rted
byot
her
auth
ors.
2,3
alcu
late
dby
com
pile
rus
ing
A r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Por
tions
ofP
u~C
2O4!
2•6H
2Ow
ere
cont
inuo
usly
agita
ted
with
C 2H2O
4/H
NO
3so
lutio
nsof
the
desi
red
com
posi
tion
ina
ther
mos
tat.
Equ
ilibr
ium
was
achi
eved
afte
rag
itatio
nfo
r2
–3
wee
ks.
The
plut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
pipe
tting
port
ions
ofth
esu
pern
atan
tliq
uid
onto
coun
ting
tray
s,an
dm
easu
ring
aac
tivity
ina
prop
ortio
nalc
ount
er.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
the
auth
ors
stat
edth
atth
eda
tare
port
edw
ere
the
resu
ltsof
repe
ated
dete
rmin
atio
nsw
hich
agre
edw
ithin
afe
wpe
rcen
t.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
27,
81~1
965!
.2 A
.I.
Mos
kvin
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him3
,95
6~1
958!
.3 W
.H
.R
eas,
Nat
l.N
ucl.
Ene
rgy
Ser
.,D
iv.
IV14B
,42
3~1
949!
.
665665IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#~3
!N
itric
acid
;H
NO
3;@7
697-
37-2#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
W.
H.
Rea
s,N
atl.
Nuc
l.E
nerg
yS
er.,
Div
IV14B
,42
3–
33~1
949!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
001
–0.
40c 3
/mol
dm2
3 :0.
75
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofP
u~C2O
4!2
inox
alic
acid
solu
tions
cont
aini
ng0.
75m
oldm2
3H
NO
3a
C2H
2O4
(c2
/mol
dm2
3 )P
u~C
2O4!
2
(104
c 1/m
oldm
23 !
C2H
2O4
(c2
/mol
dm2
3 )P
u~C
2O4!
2
(104
c 1/m
oldm
23 )
0.00
034b
3.4c
0.04
330.
826
0.00
10.
522d
0.09
411.
39
0.00
316
0.38
9e0.
145
2.04
0.00
680.
421
0.19
62.
54
0.01
790.
521
0.40
04.
89
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asno
tre
port
ed.
The
com
pile
ras
sum
esth
eso
lidph
ase
isth
ehe
xahy
dra
Pu~
C2O
4!2•
6H2O
,@2
6588
-74-
9#,w
hich
prec
ipita
tes
at25
°Cfr
omC 2H
2O4
/HN
O3
solu
tions
.1
b No
oxal
icac
idw
asad
ded
inth
ism
easu
rem
ent.
The
auth
oras
sum
edth
atP
u~C
2O4!
2•6H
2Odi
ssol
ved
topr
oduc
eP
u~C2O
4!21
and
C 2H
2O4,
and
cons
ider
edth
ede
term
ined
solu
bilit
yto
beeq
ualt
oth
eox
alic
acid
conc
entr
atio
nin
the
solu
tion.
c The
auth
orco
nsid
ered
this
valu
eas
erro
neou
sly
high
due
toox
idat
ion
ofox
alic
acid
byH
NO
3un
der
cata
lytic
actio
nof
Pu~IV
!.d M
echa
nica
lst
irrin
gw
asus
edin
this
expe
rimen
t.T
heap
proa
chto
equi
libriu
mw
asra
pid,
and
equi
libriu
mso
lubi
lity
coul
dbe
obta
ined
afte
rle
ssth
an2
heq
uilib
ratio
n.e S
olub
ility
obta
ined
byth
eau
thor
byex
trap
olat
ion.
Itco
uld
not
beob
tain
edex
perim
enta
llysi
nce
eith
erca
taly
ticox
idat
ion
ofox
alic
acid
orP
u~IV
!ox
idat
ion
byan
unkn
own
impu
rity
inte
rfer
ed.
Add
ition
alin
form
atio
n:T
heau
thor
inte
rpre
ted
the
solu
bilit
yda
tain
term
sof
the
form
atio
nof
Pu
~C2O
4!21
,P
u~C
2O4!
2an
dP
u~C2O
4) 32
2co
mpl
exes
inth
esa
tura
ted
solu
tions
.E
quili
briu
mco
nsta
nts
for
the
reac
tions
Pu
~C2O
4!21
1C
2H2O
4�
Pu~
C2O
4!21
2H1
and
Pu~C
2O4!
21C
2H2O
4�P
u~C
2O4!
3221
2H1
wer
eob
tain
edas
965
and
25.1
mol
dm23 ,
resp
ectiv
ely. A
uxili
ary
Info
rmat
ion
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 (c a T P b In d c C
J
whe
re@C
2O422
# tot
isth
eto
talo
xala
teco
ncen
trat
ion.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Fre
shly
prec
ipita
ted
Pu~
C2O
4!2•
6H2O
was
agita
ted
with
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
ina
ther
mos
tate
dba
thfo
r4
–6
hw
hich
was
foun
dsu
ffici
ent
for
equi
libriu
mto
bere
ache
d.T
hepl
uton
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.1
Pu~
C2O
4!2•
6H2O
was
obta
ined
bypr
ecip
itatio
nof
Pu
~IV
!w
ithox
alic
acid
,an
dw
ashi
ngth
epr
ecip
itate
with
wat
er.
2
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
81~1
965!
.2 A
.A
.G
rinbe
rgan
dI.
Pet
rzha
k,T
rudy
Rad
iev.
Inst
.,K
him
.G
eokh
im.7
,50
~195
6!.
7.8.
Plu
toni
um„V
I…D
ioxo
„ox
alat
e…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~V
I!di
oxoo
xala
te;
PuO
2C2O
4;@5
2689
-31-
3#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
1 L.E
.D
rabk
ina,
A.
I.M
oskv
in,
and
A.
D.
Gel
man
,Z
h.N
eorg
.K
him
.3,
1934
–6~
1958
!.2 A
.D.G
elm
anan
dL.
E.D
rabk
ina,
Zh.
Neo
rg.K
him
.3,
1105
–8
~195
8!.
riabl
es:
Pre
pare
dby
:
K:
293
/mol
dm2
3 :0
–0.
75or
100w
2/m
ass
%:
0–
8/m
oldm
23 :
1.1
–3.
08
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
uO2C
2O4
inC
2H2O
4/H
NO
3so
lutio
nsa
NO
3b
(c3
/ld
m2
3 )
C2H
2O4b
(c2
/m
oldm
23 )
PuO
2C2O
4b
(103
c 1/
mol
dm2
3 )
Ksp
d
(1010
mol
3dm
29 )
HN
O3c
(c3
/m
oldm
23 )
C2H
2O4c
(100
w2
/m
ass
%)
Puc
~gdm
23 !
PuO
2C2O
4
(103
c 1/
mol
dm2
3 )e
1.10
013
.49.
31.
10
3.20
13.3
0.11
4.0
10.
950
3.97
0.23
2.69
20.
642
2.69
0.45
2.46
40.
588
2.46
0.75
2.21
60.
528
2.21
2.01
016
.38
0.49
12.
05
0.11
5.35
4.2
2.0
03.
9116
.4
0.23
3.81
11.
301.
265.
35
0.45
2.61
20.
877
0.94
63.
82
0.75
2.40
40.
623
2.64
3.08
028
.06
0.57
42.
40
0.11
9.83
80.
487
0.49
72.
06
0.23
5.40
5.5
3.08
06.
7528
.2
0.45
3.19
12.
32.
419.
85
0.75
2.55
21.
201.
301.
365.
40
40.
795
0.72
40.
766
3.19
60.
617
0.61
20.
605
2.66
80.
567
0.60
00.
589
2.45
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
esw
asno
tre
port
ed.
The
com
pile
ras
sum
esth
eso
lidph
ase
isth
etr
ihyd
rate
,P
uO2C
2O4•
3H2O
,@
#,w
hich
prec
ipita
tes
from
acid
icso
lutio
nsby
actio
nof
oxal
icac
id.
1
b Dat
afr
omor
igin
aldo
cum
ent.1
c Dat
afr
omor
igin
aldo
cum
ent.2
d Ksp
5@P
uO221
#@C
2O422
#.It
was
calc
ulat
edby
the
auth
ors
unde
rth
eas
sum
ptio
nth
atth
eco
ncen
trat
ion
ofP
uO221
was
equa
lto
the
expe
rimen
tal
solu
bilit
yof
PuO 2
C2O
4si
nce
spec
trop
hoto
met
ricm
easu
rem
ents
did
not
indi
cate
any
com
plex
form
atio
nbe
twee
nP
uO221
and
C 2O
422io
ns.
Equ
ilibr
ium
oxal
ate
ion
conc
entr
atio
nw
asob
tain
edfr
omth
eto
tal
conc
entr
atio
nof
oxal
icac
idan
ddi
ssoc
iatio
nco
nsta
nts
ofth
ela
tter,K
a15
0.10
8m
oldm
23
~Ref
.2!
and
Ka2
56.
4310
25
mol
dm2
3 .3
e Cal
cula
ted
byth
eco
mpi
ler
usin
gA
r~P
u!5
239.
053.
Whe
rem
ore
than
one
mea
sure
men
tsw
ere
repo
rted
,ca
lcul
atio
nw
asdo
nefo
rth
eav
erag
eva
lue.
666666 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
V!
bis~
oxal
ate!;
Pu~
C2O
4!2;
@132
78-8
1-4#
~2!
Am
mon
ium
oxal
ate;
(NH 4!
2C2O
4;@1
113-
38-8#
~3!
Nitr
icac
id;
HN
O3;
@769
7-37
-2#~4
!W
ater
;H 2
O;
@773
2-18
-5#
~1!
A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.3,
962
–74
~195
8!.
~2!
A.
I.M
oskv
inan
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.3,
956
–61
~195
8!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
3c 2
/mol
dm2
3 :0.
001
–0.
35c 3
/mol
dm2
3 :1.
0;3.
8
J.H
ala
Exp
erim
enta
lDat
a
(NH
4!2C
2O4
(c2
/mol
dm2
3 )P
u~C
2O4!
2
(104
c 1/m
oldm
23 )
0.00
1b0.
619
0.00
20.
502
0.00
30.
458
0.00
40.
406
0.00
50.
355
0.01
0.43
0.05
0.57
7
0.14
1.8
0.17
52.
38
0.21
3.35
0.23
34.
18
Add
ition
alin
form
atio
n:T
hein
crea
sein
the
solu
bilit
yof
Pu~C
2O4!
2in
1.0
mol
dm2
3H
NO
3so
lutio
nsat
(NH 4
! 2C
2O4
conc
entr
atio
ns.
0.01
mol
dm2
3w
asas
crib
edby
the
auth
ors
toth
efo
rmat
ion
ofox
alat
ocom
plex
esof
Pu
~IV
!.T
heir
over
all
inst
abili
tyco
nsta
nts,K
n5
@Pu4
1#
3@C
2O422
#n@P
u~C
2O4!
n42
n#2
1,
wer
eob
tain
edfr
omex
perim
enta
lso
lubi
litie
sasK
15
1.83
102
9m
oldm
23 ,
K25
1.23
102
17m
ol2
dm2
6 ,K
35
4.03
102
24m
ol3
dm2
9 ,an
dK
45
3.23
102
28m
ol4
dm2
12.
Als
oca
lcul
ated
wer
eeq
uilib
rium
cons
tant
sfo
rth
ere
actio
nsP
u~C
2O4!
2•6H
2O~s
!12H
1�
Pu~
C2O
4!21
1C
2H2O
416H
2O,P
u~C
2O4!
2•6H
2O~s
!�P
u~C
2O4!
216H
2O,
Pu~
C2O
4!2•
6H2O
~s!1
C2H
2O4
�P
u~C
2O4!
3221
2H1
16H
2O,
and
Pu~C
2O4!
2•6H
2O~s
!12
C2H
2O4�
Pu~
C2O
4!442
14H
11
6H2O
as3.
1310
28,
3.23
102
5m
oldm
23 ,
6.8
310
24
mol
2dm
26 ,
and
7.03
102
5m
ol3
dm2
9 ,re
spec
tivel
y.In
thes
eca
lcul
atio
ns,
the
auth
ors
used
diss
ocia
tion
cons
tant
sof
oxal
icac
idK
a15
0.10
8m
oldm
23
and
Ka2
56.
4310
25
mol
dm2
3 ,an
dca
lcul
ated
equi
libriu
mhy
drog
enan
dox
alat
eio
nco
ncen
trat
ions
as@H
1#5
~12
2@C
2O422
# tot)1
Ka1
@C2O
422# t
ot/(
122 @
C2O
422# t
ot),
and
@C2O
422#5
@C2O
422# t
ot/(
11@H
1#K
a1211
@H1
#2K
a121K
a221),
resp
ectiv
ely,
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3
H
mo
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~V
I!di
oxoo
xala
te;
PuO
2C2O
4;@5
2689
-31-
3#A
mm
oniu
mox
alat
e;(N
H 4!2C
2O4;
@111
3-38
-8#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
1 A.D
.Gel
man
and
L.E
.Dra
bkin
a,Z
h.N
eorg
.Khi
m.
3,11
05–
8~1
958!
.2 A
.D
.G
elm
an,
L.E
.D
rabk
ina,
and
A.
I.M
oskv
in,
Zh.
Neo
rg.
Khi
m.
3,15
46–
50~1
958!
.
riabl
es:
Pre
pare
dby
:
K:
293
0w2
/mas
s%
:1
–6
orc2
/mol
dm2
3 :0.
07–
0.4
/mol
dm2
3 :0.
5–
3.0
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
uO2C
2O4
in~N
H4!
2C2O
4/H
NO
3so
lutio
nsa
HN
O3b
3/m
oldm
23 )
(NH
4!2C
2O4b
(100
w2
/mas
s%
)P
ub
~gdm
23 !
PuO
2C2O
4
(103
c 1/m
oldm
23!
dH
NO
3c
(c3
/mol
dm2
3 )(N
H4!
2C2O
4c
(c2
/mol
dm2
3 )
PuO
2C2O
4c
(103
c 1/m
oldm
23 )
0.5
10.
707
2.96
1.0
0.07
03.
76
20.
916
3.83
0.14
03.
30
31.
606.
690.
256
3.39
1.0
10.
900
3.76
0.28
43.
60
20.
760
0.81
23.
290.
305
3.87
30.
789
0.73
83.
190.
355
4.40
40.
889
0.84
53.
620.
369
4.60
61.
251.
064.
810.
398
4.88
2.0
11.
666.
94
21.
194.
98
30.
807
3.38
40.
709
2.97
60.
634
2.65
3.0
12.
5110
.5
21.
446.
02
31.
174.
89
40.
931
3.89
60.
761
3.18
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ases
was
not
repo
rted
.b D
ata
from
orig
inal
docu
men
t.1
c Dat
afr
omor
igin
aldo
cum
ent.2
d Cal
cula
ted
byth
eco
mpi
ler
usin
gA
r~P
u!5
239.
053.
Whe
rem
ore
than
one
mea
sure
men
tsw
ere
repo
rted
,ca
lcul
atio
nw
asdo
nefo
rth
eav
erag
eva
lue.
Add
ition
alin
form
atio
n:T
hein
crea
sein
the
solu
bilit
yof
PuO 2
C2O
4w
ithin
crea
sing
(NH 4
! 2C
2O4
conc
entr
atio
nin
solu
tions
cont
aini
ng1.
0m
oldm2
3H
NO
3w
asex
plai
ned
byth
eau
thor
sby
the
form
atio
nof
the
PuO
2~C
2O4!
222co
mpl
exin
the
solu
tions
.U
sing
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
50.
108
mol
dm2
3~R
ef.
1!an
dK
a25
6.43
102
5m
oldm
23 ,2
and
the
solu
bilit
ypr
oduc
tof
PuO 2
C2O
4,K
sp5
5.93
102
10m
ol2
dm2
6
~Ref
.2!
for
the
calc
ulat
ion
ofeq
uilib
rium
conc
entr
atio
nsof
the
PuO
221an
dC 2
O422
ions
,th
eov
eral
lins
tabi
lity
cons
tant
sw
ere
obta
ined
asK
15
@PuO
221#@
C2O
422#@
PuO
2C2O
4#2
15
2.23
102
7m
oldm
23
and
K25
@PuO
221#@
C2O
422#2
@PuO
2~C
2O4!
222#2
15
4.33
102
12m
ol2
dm2
6 .
667667IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
ofP
uO2C
2O4•
3H2O
was
stirr
edw
ithso
lutio
nsof
the
desi
red
com
posi
tion
ina
ther
mos
tate
dap
para
tus
for2
hw
hich
was
esta
blis
hed
assu
ffici
ent
for
equi
libriu
mto
bere
ache
d.T
hepl
uton
ium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
Pur
eP
uso
lutio
nin
HN
O 3w
asus
edas
ast
artin
gm
ater
ial.
Plu
toni
umw
asox
idiz
edto
Pu~V
I!in
0.5
–1.
0m
oldm
23
HN
O3
byhe
atin
gth
eso
lutio
nw
ithK 2C
r 2O
7or
MnO
2at
90°C
for
1–
2h.
The
cour
seof
oxid
atio
nw
asfo
llow
edsp
ectr
opho
tom
etric
ally
.B
yad
ding
crys
talli
neox
alic
acid
toth
eP
u~V
I!so
lutio
nin
1–
2m
oldm
23
HN
O3,
api
nkcr
ysta
lline
prec
ipita
tew
asob
tain
edw
hich
was
show
nby
grav
imet
ric(P
u,H
2O)
and
titrim
etric
~oxa
late!
anal
ysis
tobe
PuO 2
C2O
4•3H
2O.
Est
imat
edE
rror
:T
empe
ratu
re:6
1K
~aut
hors!
.S
olub
ility
:ba
sed
onth
edu
plic
ate
ortr
iplic
ate
mea
sure
men
tsas
repo
rted
inor
igin
alre
fere
nce,2co
mpi
ler
estim
ated
prec
isio
nto
be<
10%
.
Ref
eren
ces:
1 I.L.
Jenk
ins,
F.H
.Moo
re,a
ndM
.J.W
ater
man
,J.I
norg
.Nuc
l.C
hem
.27,
77~1
965!
.2 G
.S
eabo
rg,
J.K
atz,
and
P.
Man
ning
.,E
ds.,
Th
eT
ran
sura
niu
mE
lem
en
ts~1
949!
,1,
p.42
3.3 B
.P
.N
ikol
skii,
Ed.
,S
pra
voch
nik
Kh
imik
a~C
he
mis
try
Ha
nd
bo
ok!
~195
2!,
Vol
.3,
p.50
5.
Co
~1!
~2!
~3!
~4!
Va
T/
10 c 3 (c a T
J
7.9.
Plu
toni
um„III…
o-h
ydro
xybe
nzoa
te
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
II!
tris
~o-h
ydro
xybe
nzoa
te!;P
u~C
7H5O
3!3;
@#
Sol
vent
sO
.E
.Z
vyag
ints
evan
dB
.N
.S
udar
ikov
,Z
h.N
eorg
.K
him
.3,
975
–85
~195
8!;
Rus
s.J.
Inor
g.C
hem
.3,21
7–
33~1
958!
.
riabl
es:
Pre
pare
dby
:
K:
293
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
20°C
ofP
u~C7H
5O3!
3in
thre
eso
lven
tsa
Sol
vent
Pu31
~gkg
21 !b
Pu~
C7H
5O3!
3
(103
m1
/mol
kg2
1 )b
ter;
H 2O
;@7
732-
18-5#
0.12
0.50
2
anol
;C 2
H6O
;@6
4-17
-5#
0.50
2.09
eton
e;C 3H
6O;
@67-
64-1
#3.
5014
.9
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
repo
rted
.ra
ms
per
kgso
lutio
n.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.E
xces
sP
u~C
7H5O
3!•1.
5H2O
was
uilib
rate
dby
stirr
ing
for1
hw
ithth
ede
sire
dso
lven
t.ut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
Pu~
IV!
solu
tion
was
redu
ced
toP
u~I
II!
byei
ther
SO 2
orso
dium
sulfo
xyla
te,
and
Pu~C
7H5O
3!•1.
5H2O
was
obta
ined
asa
light
-blu
eso
lidon
prec
ipita
ting
with
salic
ylic
acid
atpH
2.8
–3.
8.A
naly
sis
~fou
nd/c
alcu
late
dfo
rth
ehy
drat
e,m
ass
%!:
Pu
35.3
4/35
.30,
salic
ylat
e60
.44/
60.7
1.S
ourc
ean
dpu
rity
ofso
lven
tsus
edw
asno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
tem
pera
ture
ofth
em
easu
rem
ents
was
give
nas
appr
oxim
ate
valu
e.S
olub
ility
:in
suffi
cien
tda
tagi
ven
toal
low
for
erro
res
timat
e.
668668 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
ofP
uO2C
2O4•
3H2O
was
stirr
edw
ithso
lutio
nsof
the
desi
red
com
posi
tion
ina
ther
mos
tate
dap
para
tus
for
2h,
whi
chw
ases
tabl
ishe
das
suffi
cien
tfo
req
uilib
rium
tobe
reac
hed.
The
plut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
anun
spec
ified
radi
omet
ricm
etho
d.
Pur
eP
uso
lutio
nin
HN
O 3w
asus
edas
ast
artin
gm
ater
ial.
Plu
toni
umw
asox
idiz
edto
Pu~V
I!in
0.5
–1.
0m
oldm
23 H
NO
3
byhe
atin
gth
eso
lutio
nw
ithK 2C
r 2O
7or
MnO
2at
90°C
for
1–
2h.
The
cour
seof
oxid
atio
nw
asfo
llow
edsp
ectr
opho
tom
etric
ally
.B
yad
ding
crys
talli
neox
alic
acid
toth
eP
u~V
I!so
lutio
nin
1–
2m
oldm
23
HN
O3,
api
nkcr
ysta
lline
prec
ipita
tew
asob
tain
edw
hich
was
show
nby
grav
imet
ric(P
u,H
2O)
and
titrim
etric
~oxa
late!
anal
ysis
tobe
PuO 2
C2O
4•3H
2O.
Est
imat
edE
rror
:T
empe
ratu
re:6
1K
~aut
hors!
.S
olub
ility
:fr
omth
efo
urdu
plic
ate
mea
sure
men
tspr
ecis
ion
of6
~3–
8!%
can
bees
timat
ed.
Ref
eren
ces:
1 G.
Sea
borg
,J.
Kat
z,an
dP
.M
anni
ng.,
Eds
.,T
he
Tra
nsu
ran
ium
Ele
me
nts
~194
5!,
Vol
.1,
p.42
3.2 L.
E.
Dra
bkin
a,A
.I.
Mos
kvin
,an
dA
.D
.G
elm
an,
Zh.
Neo
rg.
Khi
m.
3,19
34~1
958!
.
Co
~1!
~2!
Va
T/
wa
eth
ac a T b G c C Me
Iso
eq Pl
de
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dip
luto
nium
~IV
!tr
ioxo
~o-h
ydro
xybe
nzoa
te!;
2O3~
C7H
5O3!
;@
#H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#;
orA
mm
onia
;N
H 3;
664-
41-7#
Wat
er;
H 2O
;@7
732-
18-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
3,97
5–
85~1
958!
;R
uss.
J.In
org.
Che
m.3,
217
–33
~195
8!.
riabl
es:
Pre
pare
dby
:
K:
283
–37
1~in
HC
lor
NH
3so
lutio
ns!:
0.7
–9.
4J.
Hala
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Pu 2
O3~
C7H
5O3!
asa
func
tion
ofte
mpe
ratu
rean
dpHa
Sol
ubili
tyof
Pu 2
O3~
C7H
5O3!
asa
func
tion
ofte
mpe
ratu
rebS
olub
ility
ofP
u 2O
3~C
7H5O
3!as
afu
nctio
nof
pHe
empe
ratu
re~°
C!
Pu41
~mg
kg2
1 !cP
u 2O
3~C
7H5O
3!(1
06m
1/m
olkg
21 )d
pHP
u41
~mg
kg2
1 !cP
u 2O
3~C
7H5O
3!(1
06m
1/m
olkg
21 )d
100.
31.
250.
723
.698
.7
251.
35.
442.
32.
410
.0
503.
916
.34.
22.
08.
37
706.
326
.45.
71.
35.
44
851.
04.
187.
20.
31.
25
980.
52.
099.
40.
72.
93
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
repo
rted
.he
pHof
the
satu
rate
dso
lutio
nsno
tre
port
ed.
ram
spe
rkg
satu
rate
dso
lutio
n.al
cula
ted
byco
mpi
ler
usin
gA r~P
u!5
239.
053
negl
ectin
gth
esm
allp
luto
nium
conc
entr
atio
nin
the
satu
rate
dso
lutio
ns.
hepH
was
adju
sted
byus
ing
HC
lor
NH
3.A
ctua
lcon
cent
ratio
nof
HC
lor
NH 3
was
not
spec
ified
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
was
used
.E
xces
sP
u2O
3~C
7H5O
3)•xH
2Os
equi
libra
ted
with
the
desi
red
solu
tion
and/
orat
the
desi
red
pera
ture
byst
irrin
gfo
r1
–2
h.P
luto
nium
conc
entr
atio
nin
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
eddi
omet
ricm
etho
d.
Pu 2
O3~
C7H
5O3)•xH
2Ow
aspr
epar
edas
amor
phou
sgr
ay–
yello
wto
brow
nso
lidby
boili
ngso
lutio
nsof
PuO~
C7H
5O3!
2in
amm
onia
cal
solu
tions
ofam
mon
ium
salic
ylat
eor
inal
kalin
eso
lutio
nsof
sodi
umsa
licyl
ate.
The
Pu
~IV
!:sa
licyl
ate
ratio
inth
epr
oduc
tw
asw
ithin
2:0.
92–
2:1.
09.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
669669IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
7.10
.P
luto
nium
„IV…
oxo„o
-hyd
roxy
benz
oate
s…
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Plu
toni
um~I
V!
oxob
is~o-
hydr
oxyb
enzo
ate!;
PuO
~C7H
5O3!
2;@
#~2
!H
ydro
gen
chlo
ride;
HC
l;@76
47-0
1-0#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
3,97
5–
85~1
958!
;R
uss.
J.In
org.
Che
m.3,
217
–33
~195
8!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8pH
~inH
Cls
olut
ions
!:0.
4–
5.7
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofP
uO~C
7H5O
3!2
inH
Cls
olut
ions
asa
func
tion
ofpHa
pHb
Pu41
~mg
kg2
1 !cP
uO~C
7H5O
3!2
(105
m1
/mol
kg2
1 )c,d
0.4
71.0
29.7
1.5
50.0
20.9
2.0
6.2
2.59
3.0
1.3
0.54
4
5.2
0.5
0.20
9
5.7
0.3
0.12
5
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asno
tre
port
ed.
b The
pHw
asad
just
edby
addi
ngH
Cl.
Act
ualc
once
ntra
tion
ofth
ela
tter
was
not
spec
ified
.c G
ram
spe
rkg
satu
rate
dso
lutio
n.d C
alcu
late
dby
com
pile
rus
ing
A r~P
u!5
239.
053.
Add
ition
alin
form
atio
n:A
tpH
.6,
PuO
~C7H
5O3!
2w
asre
port
edto
hydr
olyz
eto
yiel
da
spar
ingl
yso
lubl
epr
oduc
t,w
hich
was
iden
tified
asP
u2O
3~C
7H5O
3)•xH
2O.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
PuO
~C7H
5O3!
2w
aseq
uilib
rate
dby
stirr
ing
for1
hw
ithso
lutio
nsof
thed
esire
dpH
.P
luto
nium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
PuO
~C7H
5O3!
2w
aspr
epar
edby
prec
ipita
tion
ofa
Pu
~IV
!so
lutio
nw
ithsa
licyl
icac
idat
pH0
–5
asa
brow
npr
ecip
itate
.A
naly
sis
~fou
nd/c
alcu
late
dfo
rP
uO~C
7H5O
3!2,
mas
s%!
:P
u45
.50/
45.1
8,sa
licyl
ate
51.8
0/51
.80.
Co
~1!
Pu
~2!
@7 ~3!
Va
T/
pH
T
a T b T c G d C e T Me
Iso
wa
tem
the
ra
J
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dip
luto
nium
~IV
!tr
ioxo
~o-h
ydro
xybe
nzoa
te!;
2O3~
C7H
5O3!
;@
#A
mm
oniu
mo-
hydr
oxyb
enzo
ate;
C 7H9N
O3;
@#
Wat
er;
H 2O
;@7
732-
18-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
3,97
5–
85~1
958!
;R
uss.
J.In
org.
Che
m.3,
217
–33
~195
8!.
riabl
es:
Pre
pare
dby
:
K:
298
and
333
/mol
kg2
1 :0.
02–
4.3
:1.
2–
10.2
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25an
d60
°Cof
Pu 2O
3~C
7H5O
3!in
amm
oniu
msa
licyl
ate
solu
tionsa
mpe
ratu
re~°
C!
C7H
5O32
~gkg
21
solu
tion!
bC
7H9N
O3
(m2
/mol
kg2
1 )cpH
Pu41
~mg
kg2
1so
lutio
n!P
u 2O
3~C
7H5O
3!(1
06m
1/m
olkg
21 )c
255
0.03
241.
22.
510
.5
50.
0324
1.7
1.5
6.31
50.
0324
2.7
0.5
2.10
50.
0324
5.5
0.3
1.26
50.
0324
6.2
0.3
1.26
50.
0324
7.4
0.2
0.84
50.
0324
9.2
0.1
0.42
50.
0324
10.2
0.1
0.42
00
70.
31.
25
30.
0194
70.
41.
68
50.
0324
70.
20.
841
500.
339
71.
46.
16
750.
526
72.
913
.1
100
0.71
66
0.5
2.32
100
0.71
67
3.0
13.9
100
0.71
68.
91.
56.
97
100
0.71
69.
72.
813
.0
200
1.61
4.2
1.5
7.84
200
1.61
73.
417
.8
200
1.61
7.4
3.4
17.8
300
2.76
74.
929
.3
300
2.76
7.3
4.9
29.3
300
2.76
9.2
6.5
38.8
400
4.30
6.9
6.8
47.4
400
4.30
74.
934
.2
400
4.30
9.8
9.0
62.7
600
0d
6.4
26.7
100
0.71
6d
50.0
232
170
1.32
d68
.034
3
250
2.15
d87
.048
5
400
4.30
d23
9.0
1670
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asno
tre
port
ed.
b Con
cent
ratio
nof
the
salic
ylat
eio
n;gi
ven
byau
thor
sas
appr
oxim
ate
valu
es.
c Cal
cula
ted
byco
mpi
ler.
For
plut
oniu
m,
Ar~
Pu!
523
9.05
3w
asus
ed.
d Not
repo
rted
.
670670 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dip
luto
nium
~IV
!tr
ioxo
~o-h
ydrx
yben
zoat
e!;P
u 2O
3~C
7H5O
3!;
@#
~2!
Am
mon
ium
chlo
ride;
NH 4
Cl;
@121
25-0
2-9#;
orA
mm
oniu
mni
trat
e;N
H 4N
O3;
@648
4-52
-2#~3
!W
ater
;H 2
O;
@773
2-18
-5#
O.
E.
Zvy
agin
tsev
and
B.
N.
Sud
arik
ov,
Zh.
Neo
rg.
Khi
m.
3,97
5–
85~1
958!
;R
uss.
J.In
org.
Che
m.3,
217
–33
~195
8!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8m
2/m
olkg
21 :
3.42
;8.
44~N
H4C
l!;0
–12
.5~N
H4N
O3!
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
and
pH6
ofP
u 2O3~
C7H
5O3!
inN
H4C
lor
NH
4NO
3so
lutio
nsa
Sal
tS
alt
~gkg
21 !b
Sal
t(m
2/m
olkg
21 )c
Pu41
~mg
kg2
1 !bP
u 2O
3~C
7H5O
3!(1
06m
1/m
olkg
21 )c
NH
4Cl;
@121
25-0
2-9#
157
3.42
0.5
2.48
315
8.44
0.1
0.61
1
NH
4NO
3;@6
484-
52-2#
500.
658
0.5
2.20
100
1.39
0.4
1.86
300
5.35
0.3
1.79
500
12.5
0.1
0.84
a The
com
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asno
tre
port
ed.
b Gra
ms
per
kgsa
tura
ted
solu
tion.
c Cal
cula
ted
byco
mpi
ler.
Form
1,
Ar~
Pu!
523
9.05
3w
asus
edan
dth
esm
all
plut
oniu
mco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
negl
ecte
d.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
Pu
2O3~
C7H
5O3!•xH
2Ow
aseq
uilib
rate
dby
stirr
ing
with
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
for
1–
2h.
Plu
toni
umco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
anun
spec
ified
radi
omet
ricm
etho
d.
Pu 2
O3~
C7H
5O3!•xH
2Ow
aspr
epar
edas
amor
phou
sgr
ay–
yello
wto
brow
nso
lidby
boili
ngso
lutio
nsof
PuO~
C7H
5O3!
2in
amm
onia
cal
solu
tions
ofam
mon
ium
salic
ylat
eor
inal
kalin
eso
lutio
nsof
sodi
umsa
licyl
ate.
The
Pu
~IV
!:sa
licyl
ate
ratio
inth
epr
oduc
tw
asw
ithin
2:0.
92–
2:1.
09.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Co
~1!
Pu
~2!
~3!
Va
T/
m2
pH Te
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
7.11
.P
luto
nium
„IV…
8-H
ydro
xyqu
inol
inat
es
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
tetr
akis~
halo
geno
-8-h
ydro
xy-q
uino
linat
es!A
mm
oniu
mpe
rchl
orat
e;N
H 4ClO
4;@7
790-
98-9#
Sod
ium
acet
ate;
C 2H3O
2Na;
@127
-09-
3#W
ater
;H 2
O;
@773
2-18
-5#
C.
Kel
ler
and
S.
H.
Ebe
rle,
Rad
ioch
im.
Act
a4,14
1–
5~1
965!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
09;
0.1
/mol
dm2
3 :0;
0.01
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofpl
uton
ium~
IV!
tetr
akis~
8-hy
drox
y-qu
inol
inat
es!in
NH
4ClO
4/C
2H3O
2Na
solu
tions
a
mpl
exin
glig
and
Pu~
IV!
com
plex
~for
mul
a!N
H4C
lO4
(c2
/mol
dm2
3 )C
2H3O
2Na
~c3
/mol
dm2
3 )P
u~IV
!co
mpl
ex~1
06c 1
/mol
dm2
3 )
hydr
oxyq
uino
line,
C 9H7N
OP
u~C
9H6N
O! 4
;0.
10
2.0
@#
~I!
0.09
0.01
1.5
chlo
ro-8
-hyd
roxy
quin
olin
e,P
u~C9H
5ClN
O! 4
;0.
10
0.69
H6C
lNO
@#
~II!
0.09
0.01
3.9
-dic
hlor
o-8-
hydr
oxyq
uino
line,
Pu~C
9H4C
l 2N
O! 4
;0.
10
0.59
H5C
l 2N
O@
#~I
II!
0.09
0.01
5.3
-dib
rom
o-8-
hydr
oxyq
uino
line,
Pu~C
9H4B
r 2N
O! 4
;0.
10
0.21
H5C
l 2N
O@
#~I
V!
0.09
0.01
1.6
chlo
ro-7
-iodo
-8-h
ydro
xyqu
inol
ine,
Pu~C
9H4C
lINO
! 4;
0.1
00.
82
H5C
l 2N
O@
#~V
!0.
090.
010.
92
heco
mpo
sitio
nof
the
equi
libriu
mso
lidph
ase
was
not
repo
rted
.S
atur
ated
solu
tions
show
edpH
of6.
ditio
nali
nfor
mat
ion:
rth
eP
u~C9H
6NO
! 4ch
elat
e~I!
the
solu
bilit
yw
asal
som
easu
red
asa
func
tion
ofpH
inth
etw
oso
lutio
nssh
own
abov
e.T
here
sults
wer
epo
rted
ingr
aphi
calf
orm
.
671671IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
Exc
ess
Pu
2O3~
C7H
5O3!•xH
2Ow
aseq
uilib
rate
dby
stirr
ing
with
solu
tions
ofth
ede
sire
dco
ncen
trat
ion
for
1–
2h.
Plu
toni
umco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
anun
spec
ified
radi
omet
ricm
etho
d.C
hem
ical
sus
edto
adju
stpH
not
repo
rted
.
Pu 2
O3~
C7H
5O3!•xH
2Ow
aspr
epar
edas
amor
phou
sgr
ay–
yello
wto
brow
nso
lidby
boili
ngso
lutio
nsof
PuO~
C7H
5O3!
2in
amm
onia
cal
solu
tions
ofam
mon
ium
salic
ylat
eor
inal
kalin
eso
lutio
nsof
sodi
umsa
licyl
ate.
The
Pu
~IV
!:sa
licyl
ate
ratio
inth
epr
oduc
tw
asw
ithin
2:0.
92–
2:1.
09.
Sou
rce
and
purit
yof
plut
oniu
man
dot
her
chem
ical
sno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 Co
8- 5- C9
5,7
C9
5,7
C9
5- C9
a T Ad
Fo
re
J
7.12
.P
luto
nium
„IV…
N-H
ydro
xy-N
-Nitr
osob
enze
neam
inat
e
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Plu
toni
um~I
V!
raki
s~N-h
ydro
xy-N
-nitr
oso-
benz
enea
min
ate
!;C
24H
20N
8O8P
uP
u~C
6H5N
2O2!
4;@
#N
-hyd
roxy
-N-n
itros
oben
zene
amin
e~cup
ferr
on!;
C6H
6N2O
2;48
-97-
0#S
ulfu
ricac
id;
H 2S
O4;
@766
4-93
-9#W
ater
;H 2
O;
@773
2-18
-5#
I.V
.Moi
seev
,N.N
.Bor
odin
a,an
dV
.T.T
svet
kova
,Zh.
Neo
rg.
Khi
m.6
,54
3–
8;~1
961!
Rus
s.J.
Inor
g.C
hem
.6,27
7–
9~19
61!.
riabl
es:
Pre
pare
dby
:
K:
294
/mol
dm2
3 :0.
0018
9–
0.01
52/m
oldm
23 :
0.25
–1.
5
J.D
.N
avra
til
Exp
erim
enta
lDat
a
Sol
ubili
tyat
21°C
ofP
u~IV
!te
trak
is~c
upfe
rrat
e!,P
u~C
6H5N
2O2!
4,in
H2S
O4
solu
tions
a
H2S
O4
3/m
oldm
23 )b
@H1
#c
~mol
dm2
3 !C
upfe
rron
d
(103
c 2/m
oldm
23 )
Pu~
C6H
5N2O
2!4e
(106
c 1/m
oldm
23 )
0.25
0.27
81.
893.
477.
9~0.7
9!f
2.07
~0.1
53!f
0.50
0.53
83.
485.
074.
93~0.
416!
f2.
53~0
.116
!f
1.0
1.05
510
.11.
76~0
.386
!
1.5
1.56
815
.21.
38~0
.056
6!
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
itial
conc
entr
atio
nof
sulfu
ricac
id.
ydro
gen
ion
conc
entr
atio
nat
equi
libriu
m.
Itw
asob
tain
edfr
omth
ein
itial
conc
entr
atio
nof
sulfu
ricac
id,
and
the
appa
rent
diss
ocia
tion
nsta
nts
ofth
eac
idta
ken
from
Ref
.1.
quili
briu
mco
ncen
trat
ion
ofcu
pfer
ron.
Itw
asca
lcul
ated
from
the
initi
alco
ncen
trat
ions
ofP
u~I
V!
and
cupf
erro
n,th
efin
alvo
lum
eof
the
olut
ion,
and
the
Pu~IV
!co
ncen
trat
ion
inth
esa
tura
ted
solu
tion.
vera
geva
lues
and
stan
dard
devi
atio
ns~inpa
rent
hese
s!ca
lcul
ated
byth
eco
mpi
ler
from
thre
epa
ralle
lexp
erim
ents
.hi
spa
irof
mea
sure
men
tsdi
ffere
din
the
initi
alcu
pfer
ron
conc
entr
atio
n.
ditio
nali
nfor
mat
ion:
eeq
uilib
rium
cons
tant
for
the
prec
ipita
tion
ofP
u~I
V!
bycu
pfer
ron
~HR
!,K
5@H
1#4
@Pu~
IV! #
21@H
R#2
4w
asca
lcul
ated
tobe
6.6
102
13m
ol2
1dm
3 .F
rom
this
cons
tant
the
solu
bilit
ypr
oduc
tof
Pu
~IV
!cu
pfer
rate
,w
asob
tain
edasK
sp5
Ka4K
215
@Pu~
IV! #
@R2
#4
1.23
102
31m
ol5
dm2
15us
ing
the
diss
ocia
tion
cons
tant
ofcu
pfer
ron,Ka5
5.33
102
4.2
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
yof
Pu~I
V!
cupf
erra
tew
asde
term
ined
acco
rdin
gto
Ref
.3.
Abo
ut10
mL
Pu~IV
!in
0.5
mol
dm2
3H
2SO
4an
dth
eca
lcul
ated
quan
titie
sof
wat
er,
acid
,an
dth
ecu
pfer
ron
solu
tion
wer
est
irred
for
abou
t3
min
ina
50m
Lbe
aker
.T
hen
the
prec
ipita
tew
asfil
tere
dof
fus
ing
aN
o.4
glas
sfil
ter
cruc
ible
.T
hefir
st15
mL
offil
trat
ew
ere
reje
cted
,an
dth
eP
u~IV
!co
nten
tin
the
rem
aini
ngso
lutio
nw
asde
term
ined
radi
omet
rical
ly.
Aso
lutio
nof
Pu~I
V!
was
prep
ared
bydi
ssol
ving
pure
Pu
~OH
! 4,
fres
hly
prec
ipita
ted
inth
eco
ld,i
n1:
1H 2S
O4.
Afte
rdi
lutio
nw
ithw
ater
the
conc
entr
atio
nof
H 2SO
4w
as0.
5m
oldm
23 .
The
plut
oniu
mco
ncen
trat
ion
inth
isso
lutio
nw
asde
term
ined
grav
imet
rical
lyby
prec
ipita
ting
Pu~O
H! 4
with
amm
onia
,an
dig
nitin
gto
PuO
2at
1000
°C.C
upfe
rron
solu
tion
was
prep
ared
byw
ashi
ngth
ere
agen
tre
peat
edly
with
etha
nol,
diss
olvi
ngit
inw
ater
,an
dst
anda
rdiz
ing
bytit
ratio
nw
itha
stan
dard
Fe
~III
!so
lutio
nin
ast
ream
ofC
O 2us
ing
apl
atin
umin
dica
tor
elec
trod
e.
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
stan
dard
devi
atio
nca
lcul
ated
byth
eco
mpi
ler.
Ref
eren
ces:
1 T.
F.
You
ngan
dL.
A.
Bla
tz,
Che
m.
Rev
.44,
93~1
949!
.2 I.
V.
Pya
tnits
kii,
Zh.
Ana
l.K
him
.1,
135
~194
6!.
3 I.V
.P
yatn
itski
i,Z
h.A
nal.
Khi
m.1
,57
~194
6!.
672672 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dw
asus
ed.
The
rmos
tatin
gof
the
solu
tions
and
equi
libra
tion
time
not
repo
rted
.P
luto
nium
conc
entr
atio
nin
the
satu
rate
dso
lutio
nsw
asde
term
ined
byan
unsp
ecifi
edra
diom
etric
met
hod.
Plu
toni
um~9
9.8%
purit
y!w
asdi
ssol
ved
inac
idan
dth
e241 A
mac
cum
ulat
edby
bde
cay
of24
1 Pu
was
rem
oved
bypr
ecip
itatio
nof
plut
oniu
mas
pero
xide
.T
heab
senc
eof24
1 Am
was
chec
ked
bypa
per
chro
mat
ogra
phy
acco
rdin
gto
Ref
.1.
The
Pu
solu
tion
was
fum
edw
ithH 2
SO
41H
NO
3m
ixtu
reto
obta
inP
u~IV
!.T
hech
elat
e~I!
was
prep
ared
byad
ding
drop
wis
e0.
05m
mol
Pu
~IV
!in
10m
L1
mol
dm2
3H
2SO
4to
aso
lutio
nof
0.25
mm
ol8-
hydr
oxyq
uino
line
in50
mL
0.1
mol
dm23
C2H
3O2N
aso
lutio
nun
der
vigo
rous
stirr
ing.
The
pHw
asco
ntin
uous
lyad
just
eddu
ring
prec
ipita
tion
to4.
5–
4.9
with
NH 3so
lutio
n.T
hem
ixtu
rew
ashe
ated
to50
–60
°C,
slow
lyco
oled
toro
omte
mpe
ratu
re,
filte
red,
the
prec
ipita
tew
asw
ashe
dw
ithw
arm
wat
er,
and
drie
dov
erP 2
O5.
The
chel
ates
~II!
–~V
!w
ere
prep
ared
byad
ding
drop
wis
e0.
05m
mol
Pu~IV
!in
10m
L1
mol
dm2
3H
2SO
4to
50m
L0.
1m
oldm
23
C2H
3O2N
ain
40%
–60
%di
oxan
e.T
heso
lutio
nsco
ntai
ned
2%–
5%ex
cess
ofth
ech
elat
ing
agen
tov
erth
est
oich
iom
etric
amou
nt.
The
pHw
asco
ntin
uous
lyad
just
eddu
ring
prec
ipita
tion
to4.
5–
4.9
with
NH 3so
lutio
n.T
hem
ixtu
rew
asth
endi
lute
dw
ithw
ater
toa
diox
ane
cont
ent
of30
%,
the
prec
ipita
tew
assu
cked
dry,
was
hed
with
30%
diox
ane
at60
°C,
and
drie
dat
110
°C.
Ana
lysi
sof
the
chel
ates
,fo
und/
calc
ulat
edfo
rP
u~lig
and!
4~m
ass
%!:
~I!
Pu
29.2
/29.
30,
ligan
d71
.2/7
0.70
;~I
I!P
u25
.2/2
5.06
,lig
and
78.0
/74.
94;~III
!22
.4/2
1.91
,lig
and
79.7
/78.
09;~
IV!
Pu
16.6
/16.
51,
ligan
d83
/83.
49;~V
!P
u16
.0/
16.4
0,lig
and
82/8
3.60
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 C.
Kel
ler,
J.C
hrom
atro
grap
hy7,
535
~196
2!.
Co
~1!
tet
or ~2!
@1 ~3!
~4!
Va
T/
c 2 c 3 (c a T b In c H co d E s e A f T Ad
Th
3 5
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
re by as s,
510
2(2
1.76
0.2)
mol
3dm
29
~Kw
isth
eio
npr
oduc
tof
wat
er,K
a2is
the
seco
nddi
ssoc
iatio
nco
nsta
ntof
carb
onic
acid
!.A
lthou
ghth
isva
lue
iscl
ose
toth
atof
Fel
my,5
the
eval
uato
rre
com
men
dsth
eva
lue
ofR
unde
and
Kim
3be
used
sinc
eit
was
obta
ined
unde
rw
ell
defin
edco
nditi
ons.
Ref
eren
ces:
1 G.
Mei
nrat
han
dJ.
I.K
im,
Rad
ioch
im.
Act
a52Õ5
3,29
~199
1!.
2 G.
Mei
nrat
han
dJ.
I.K
im,
Eur
.J.
Sol
idS
tate
Inor
g.C
hem
.28
,38
3~1
991!
.3 W
.R
unde
,G
.M
einr
ath,
and
J.I.
Kim
,R
adio
chim
.A
cta
58Õ5
9,93
~199
2!.
4 R.
J.S
ilva,
Mat
er.
Res
.S
ol.
Sym
p.P
roc.26
,87
5~1
989!
.5 A
.R
.F
elm
y,D
.R
ai,
and
R.
W.
Ful
ton,
Rad
ioch
im.
Act
a50,
193
~199
0!.
6 M.
Shi
loh,
M.
Giv
on,
and
Y.
Mar
cus,
J.In
org.
Nuc
l.C
hem
.30
,18
07~1
969!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
mtr
is~ca
rbon
ate!;
Am
2~C
O3) 3
;@
#P
otas
sium
carb
onat
e;K
2CO
3;
@584
-08-
7#W
ater
;H 2
O;
@773
2-18
-5#
M.
Shi
loh,
M.
Giv
on,
and
Y.
Mar
cus,
J.In
org.
Nuc
l.C
hem
.30
,18
07–
14~1
969!
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
12–
0.6
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
ofA
m2~
CO
3!3
at25
°Cin
K 2C
O3
solu
tions
eso
lubi
lity
ofA
m2~
CO
3!3
at25
°Cas
afu
nctio
nof
K 2CO
3co
ncen
trat
ion,
inm
oldm
23 ,
was
repo
rted
tobe
give
nby
the
equa
tion
S5K
@CO
32 #2
thK
51.
8310
23
mol
21
dm3 .
Exp
erim
enta
ldat
aw
ere
repo
rted
ingr
aphi
calf
orm
.Als
oin
grap
hica
lfor
mw
asre
port
edth
eso
lubi
lity
of
2~C
O3!
3as
afu
nctio
nof
pH.T
heA
m~III
!sp
ecie
spr
esen
tin
0.12
–0.
6m
oldm2
3K
2CO
3so
lutio
nsw
asid
entifi
edas
Am~O
H!~
CO
3) 34
2.
eeq
uilib
rium
solid
phas
ew
asA
m 2~C
O3!
3,@
#,in
alls
olut
ions
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.25m
Lof
the
Am
~III
!st
ock
solu
tion
H3,
dilu
teH
ClO
4!w
asin
trod
uced
into
2.5
mL
K 2CO
3
lutio
nof
the
desi
red
conc
entr
atio
nin
ace
ntrif
uge
cone
.te
rst
andi
ng24
hat
room
tem
pera
ture
with
occa
sion
alak
ing,
the
prec
ipita
tew
asce
ntrif
uged
off,
and
amer
iciu
min
satu
rate
dso
lutio
nw
asde
term
ined
byaco
untin
g.T
heui
libriu
mso
lidph
ases
wer
ean
alyz
edfo
rca
rbon
ate
and
eric
ium
,an
dth
eC
O 3/A
mra
tiow
asfo
und
tobe
1.60
.
241 A
m~U
.S.A
.E.C
.!w
asdi
ssol
ved
inH
ClO 4
solu
tion
tofo
rma
stoc
kso
lutio
nof
abou
t0.
1m
oldm2
3A
m~I
II!.
Por
tions
ofth
isso
lutio
nw
ere
used
topr
ecip
itate
amer
iciu
mca
rbon
ate
dire
ctly
inth
eso
lubi
lity
expe
rimen
ts.
K 2CO
3w
asa
reag
ent
grad
epr
oduc
t.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
673673IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
8.T
heS
olub
ility
ofA
mer
iciu
mC
ompo
unds
8.1.
Am
eric
ium
„III…
Car
bona
tean
dA
mer
iciu
m„III…
Hyd
roge
ncar
bona
te
8.1.
1.E
valu
atio
nof
the
Am
„O
H…C
O3
orA
m2„
CO
3…3¿
CO
32À¿
NaC
lO4¿
H2O
Sys
tem
Com
pone
nts:
Eva
luat
or:
~1!
Am
eric
ium
hydr
oxoc
arbo
nate
;A
m~OH
!CO
3;
@101
362-
32-7#
;or
Dia
mer
iciu
mtr
is~ca
rbon
ate!;
Am
2~C
O3) 3
;@
#~2
!C
arbo
nate
ion;
CO 322
;@3
812-
32-6#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
6113
7B
rno,
Cze
chR
epub
lic,
June
2000
Crit
ical
Eva
luat
ion:
The
two
amer
iciu
mca
rbon
ates
,Am~O
H!C
O3
and
Am
2~C
O3!
3,ar
eso
lidph
ases
impo
rtan
tfro
mth
epo
into
fvie
wof
pote
ntia
llea
chin
gof
amer
iciu
mfr
omra
dioa
ctiv
ew
aste
repo
sito
ries.
The
irso
lubi
lity
inca
rbon
ate
cont
aini
ngN
aClO
4so
lutio
nsha
sbe
enst
udie
din
Ref
s.1
–4.
The
hydr
oxoc
arbo
nate
isth
eth
erm
odyn
amic
ally
stab
leso
lidph
ase
inso
lutio
nsth
atar
ein
cont
act
with
atm
osph
eric
part
ialp
ress
uof
CO
2(,
1%
),3
and/
orat
low
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
n,4
whi
leat
high
erpa
rtia
lpr
essu
res
ofC
O2
itis
the
crys
talli
neca
rbon
ate,
Am 2
~CO
3!3.
1–
3T
hese
solid
phas
esha
veal
sobe
enst
udie
din
rela
ted
syst
ems
not
cont
aini
ngN
aClO
4.T
hus
Fel
mye
ta
l.5
obse
rved
Am~
OH
!CO
3as
the
solid
phas
ein
solu
tions
cont
aini
ng,0.
1m
oldm
23
Na 2
CO
3,an
dat
pH5.
5–
13,a
ndS
hilo
heta
l.6ob
serv
edA
m2~
CO
3!3
ineq
uilib
rium
with
solu
tions
cont
aini
ng.
0.12
mol
dm2
3K
2CO
3.T
heso
lubi
lity
data
wer
eob
tain
edin
mea
sure
men
tsco
nduc
ted
aspH
titra
tions
1–
3or
byus
ing
the
isot
herm
alm
etho
d,4,
5w
ithca
refu
lco
ntro
lof
pHan
dot
her
expe
rimen
tal
para
met
ers.
The
carb
onat
eio
nco
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
cont
role
dei
ther
satu
ratin
gth
eso
lutio
nsw
ithC
O 2ga
sat
vario
uspH
,1
–3,
5or
byus
ing
NaH
CO 3
4,5
orN
a 2C
O3.
5E
xcep
tfo
rm
easu
rem
ents
inR
efs.
1,2
whe
reeq
uilib
ratio
ntim
eof
2–
3da
ysw
asus
ed,o
ther
auth
ors
equi
libra
ted
the
syst
ems
for
seve
ralw
eeks
.The
long
equi
libra
tion
time
wne
eded
beca
use
ofth
esl
owtr
ansi
tion
ofin
itial
lyam
orph
ous
solid
tocr
ysta
lline
form
.5
Thi
sis
poss
ibly
also
the
reas
onfo
rra
ther
wid
esc
atte
rof
expe
rimen
tal
solu
bilit
yda
taob
serv
edev
enaf
ter
long
equi
libra
tion.
1,5
Num
eric
also
lubi
lity
data
have
been
repo
rted
byS
ilva
4
only
,oth
erau
thor
sre
port
edth
eir
data
ingr
aphi
calf
orm
,1,
5or
repo
rted
solu
bilit
ypr
oduc
tson
ly.
2,3
Thi
ssi
tuat
ion
does
notm
ake
ade
taile
dco
mpa
rison
poss
ible
.As
with
the
carb
onat
esof
uran
ium
,nep
tuni
um,a
ndpl
uton
ium
,the
solu
bilit
ies
ofbo
thA
m~O
H!C
O3
and
Am
2~C
O3!
3
pass
thro
ugh
am
inim
umw
hen
plot
ted
agai
nst
equi
libriu
mca
rbon
ate
ion
conc
entr
atio
n.1,
2,5
The
enha
nced
solu
bilit
yat
high
er @CO
322#
valu
esha
sbe
enas
crib
edto
the
form
atio
nof
Am
~III
!ca
rbon
atoc
ompl
exes
,i.e
.,A
m~CO
3) 22
,1,5
Am
~CO
3) 33
2,5
orA
m~O
H!~
CO
3) 34
2.6
Like
wis
e,no
dire
ctco
mpa
rison
ofso
lubi
lity
prod
uct
valu
esis
poss
ible
.F
orK
spof
Am
2~C
O3!
3,th
ere
sults
ofth
eG
erm
angr
oup
1–
3ar
eav
aila
ble
only
.T
heau
thor
sob
tain
edth
eso
lubi
lity
prod
uct
inse
vera
lrep
eate
dm
easu
rem
ents
with
very
good
repr
oduc
ibili
ty.
The
valu
eas
2lo
gK
sp,
for
0.1
mol
dm2
3N
aClO
4,ar
e29
.896
0.18
at29
8.1
Kan
dp(C
O2)
of1%
,129
.576
0.10
at29
5.1
Kan
dp(C
O2)
of10
0%,2
29.3
260.
08at
295.
1K
andp
(CO
2)of
1%,2
and
29.4
560.
18at
298.
1K
andp
(CO
2)of
1%or
100%
.3T
heev
alua
tor
sugg
ests
thes
eva
lues
asre
com
men
ded
ones
.T
heso
lubi
lity
prod
uct
ofA
m~O
H!C
O3
has
been
repo
rted
tobe
102(1
8.70
60.
12)
mol
3dm
29
~298
.1K
,p
(CO
2)
0.03
%,0
.1m
oldm
23
NaC
lO4)
,3an
d10
222
.5m
ol3
dm2
9at
unsp
ecifi
edio
nic
stre
ngth
and
room
tem
pera
ture
.5
Silv
a4ob
tain
edth
eeq
uilib
rium
cont
ant,
K5
@Am
31
#@C
O322
#@H
1#2
25
5836
206
~0.1
mol
dm2
3N
aClO
4)fo
rth
ere
actio
nA
m~O
H!C
O3
(s)
12H
1�
Am
311
HC
O32
1H
2O.
Fro
mth
isco
nsta
ntth
eev
alua
tor
calc
ulat
edth
eso
lubi
lity
prod
uct
asKsp
5K
KwK
a2
Co
~1!
~2!
~3!
Va
T/
c 2 Th
wi
Am
Th
Me
Iso
~p so Af
sh the
eq am
J
FIG
.23
.D
iam
eric
ium
tris~c
arbo
nate!
–so
dium
perc
hlor
ate
–ca
rbon
diox
ide
–w
ater
syst
em.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
eso
lubi
lity
expe
rimen
t,co
mbi
ned
with
pHtit
ratio
n,w
asnd
ucte
din
a10
0m
Lth
erm
osta
ted
vess
elin
the
pHra
nge
m6.
0to
9.2
unde
rar
gon/
1%C
O2
atm
osph
ere.
The
desi
red
rbon
ate
conc
entr
atio
nw
asat
tain
edby
pHco
ntro
l.T
he31
ion
0.1
mol
dm2
3H
ClO
4w
asin
trod
uced
into
the
vess
elm
31
# tot
553
102
4m
oldm
23 )
and
prec
ipita
ted
byad
ditio
n0.
05m
oldm
23
Na 2
CO
3.T
heso
lutio
nw
ithth
epr
ecip
itate
sle
ftto
stan
dun
der
Ar/
CO 2at
mos
pher
efo
r2
wee
ks.
The
npH
ofth
eso
lutio
nw
asgr
adua
llyad
just
edby
addi
tions
ofhe
r0.
1m
oldm
23
HC
lO4
or0.
05m
oldm
23
Na 2
CO
3fo
rth
era
nge
of6
–8
inth
epr
esen
ceof
0.1
mol
dm23
NaC
lO4,
or0.
3m
oldm
23
HC
lO4
or0.
1m
oldm
23
Na 2
CO
3fo
rth
epH
nge
of8
–9
inth
epr
esen
ceof
0.3
mol
dm23
NaC
lO4.
mbi
natio
ngl
ass
elec
trod
es~RO
SS
-typ
e,O
rion!
used
for
pHas
urem
ent
wer
eca
libra
ted
agai
nst
stan
dard
buffe
rso
lutio
nsju
sted
toth
ede
sire
dio
nic
stre
ngth
.E
quili
briu
mat
agi
ven
was
esta
blis
hed
in2
–3
days
.T
heam
eric
ium
conc
entr
atio
ns
mea
sure
daf
ter
filtr
atio
nof
the
satu
rate
dso
lutio
nth
roug
h0
nmpo
resi
zefil
ter
byliq
uid
scin
tilla
tion
coun
ting
eckm
anLS
6800!
.In
anu
mbe
rof
sam
ples
,th
eA
mnc
entr
atio
nw
asal
sode
term
ined
byei
ther
UV
spec
tros
copy
t @A
m3
1# t
ot.
102
5m
oldm
23 !
orby
lase
r-in
duce
dot
oaco
ustic
spec
tros
copy~a
t @A
m3
1# t
ot,
102
6m
oldm
23 !
.e
equi
libriu
mso
lidph
ases
wer
ein
vest
igat
edby
mea
nsof
31as
am
odel
ion
whi
chis
know
nto
beve
rycl
ose
inem
ical
beha
vior
toA
m31.
The
Nd31
ion
was
prec
ipita
ted
der
the
sam
eco
nditi
ons
asw
asA
m31
inth
eso
lubi
lity
perim
ent,
and
the
prec
ipita
tew
asco
nfirm
edto
be
2~C
O3!
3•8H
2Oby
x-ra
ydi
ffrac
tion
and
IRsp
ectr
osco
py.
Isot
opic
ally
pure
241 A
mw
asus
ed.
The
Ar
11%
CO 2
gas
mix
ture
was
apr
oduc
tof
Lind
e.N
oot
her
deta
ilsw
ere
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n61
K~a
utho
rs!.
pH:
prec
isio
n60.
03un
its~a
utho
rs!.
Sol
ubili
typr
oduc
t:st
anda
rdde
viat
ion
see
abov
e.
674674 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
mer
iciu
mtr
is~ca
rbon
ate!;
Am
2~C
O3) 3
;@
#~2
!C
arbo
ndi
oxid
e;C
O 2;
@124
-38-
9#~3
!S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
1 G.
Mei
nrat
han
dJ.
I.K
im,
Rad
ioch
im.
Act
a52Õ5
3,29
–34
~199
1!.
2 G.
Mei
nrat
han
dJ.
I.K
im,
Eur
.J.
Sol
idS
tate
Inor
g.C
hem
.28
,38
3–
8~1
991!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8;29
5p
2~p
artia
lpre
ssur
eof
CO 2!
/%:
1;10
0c 3
/mol
dm2
3 :0.
1;0.
3
J.H
ala
Exp
erim
enta
lDat
aIn
the
orig
inal
Ref
.1,
the
solu
bilit
yof
Am 2~
CO
3!3
asa
func
tion
ofpH
and
equi
libriu
mco
ncen
trat
ion
ofC
O322
ion,
at25
°Can
dpa
rtia
lpr
essu
reof
CO 2
of1%
,w
ere
repo
rted
ingr
aphi
calf
orm~s
eeF
ig.
23!.
The
conc
entr
atio
nof
CO 322
ion
was
calc
ulat
edfr
omth
em
easu
red
pH,
and
ase
ries
ofeq
uilib
riain
clud
ing
part
ialp
ress
ure
ofC
O2,
Hen
ryco
nsta
nt,
and
diss
ocia
tion
cons
tant
sof
carb
onic
acid
:
CO
2~g
!�KH
CO
2~a
q !�K
*H
2CO
3�Ka1
HC
O3�K
a2
CO
322
aslo
g @C
O322
#5lo
gK
1lo
gp(
CO
2)1
2pH
,w
ithlo
gK
5lo
g(K
HK
* Ka1
Ka2
)52
17.7
8.T
heco
urse
ofth
eso
lubi
lity
curv
ew
asin
terp
rete
dby
the
auth
ors
inte
rms
ofth
efo
rmat
ion
ofA
m(C
O3)
n32
2n
com
plex
esin
the
solu
tion.
Usi
ngth
eeq
uatio
n @Am
# tot
5$K
sp/ @
CO
322#3
%1/2 S
bn@C
O322
#n,
whe
re@A
m# t
otis
the
tota
lco
ncen
trat
ion
ofA
m~III
!in
the
satu
rate
dso
lutio
n,K
sp
5@A
m3
1#2
@CO
322#3
,an
db
n5
@Am
(CO
3) n3
22
n#/
@Am
31
#@C
O322
#n~o
vera
llst
abili
tyco
nsta
nts
ofth
eA
m(C
O 3)n3
22
nco
mpl
exes!
,th
efo
l-lo
win
gva
lues
wer
eob
tain
ed: b15
10(5
.976
0.15
)m
ol2
1dm
3 ,b
25
10(9
.586
0.24
)m
ol2
2dm
6 ,an
dK
sp5
102
(29.
896
0.18
)m
ol5
dm2
15.
The
seco
nsta
nts
wer
ere
port
edto
beva
lidfo
rso
lutio
nsw
ithio
nic
stre
ngth
of0.
1–
0.3
mol
dm2
3N
aClO
4.In
the
orig
inal
refe
renc
e,2th
eva
lue
oflo
gKw
asre
fined
tobe
2(1
7.62
60.
07),
and
the
solu
bilit
ypr
oduc
tofA
m 2~C
O3!
3at
22°C
was
obta
ined
as102
(29.
326
0.08
)m
ol5
5 dm2
15at
100%
and
1%pa
rtia
lpr
essu
reof
CO
2,re
spec
tivel
y,an
dio
nic
stre
ngth
of0.
1m
oldm2
3
NaC
lO4.
Inbo
thdo
cum
ents
,th
eeq
uilib
rium
solid
phas
ew
asA
m2~
CO
3) 3
,@
#,ov
erth
ew
hole
pHra
nge
inve
stig
ated
.
Me
Th
co fro
ca Am
( @A
of wa
the
eit
pH by ra Co
me
ad pH wa
45 ~B co ~a ph Th
Nd
ch un ex Nd
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
The
equi
libriu
mso
lidph
ases
wer
ech
arac
teriz
edby
ther
mog
raph
ican
alys
isco
mbi
ned
with
DT
A,
byF
TIR
spec
tros
copy
,an
dx-
ray
pow
der
diffr
actio
n.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
eric
ium
hydr
oxoc
arbo
nate
;A
m~OH
!CO
3;
0136
2-32
-7#S
odiu
mhy
drog
enca
rbon
ate;
NaH
CO
3;
@144
-55-
8#S
odiu
mpe
rchl
orat
e;N
aClO 4
;@7
601-
89-0#
Wat
er;
H 2O
;@7
732-
18-5#
R.
J.S
ilva,
Mat
er.
Res
.S
oc.
Sym
p.P
roc.26,
875
–81
,~198
4!.
Am
erici
um
an
dC
uriu
mC
he
mis
try
an
dT
ech
no
log
y,e
dite
dby
N.
M.
Ede
lste
ine
ta
l.,~R
eide
lDor
drec
ht,
1985!
,pp
.22
5–
238.
R.
J.S
ilva
and
H.
Nits
che,
NU
RE
G/C
P-0
052,
Pro
ceed
ings
U.S
.N
RC
,Nuc
l.W
aste
Geo
chem
.’83
,Res
ton,
VA
,198
3,pp
.70
–93
.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :2
310
24
/mol
dm2
3 :0.
1
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofA
m~O
H!C
O3
in2
310
24
mol
dm2
3N
aHC
O 3/0
.1m
oldm
23
NaC
lO4
solu
tions
a
quili
brat
ion
time
~day
s!pH
HC
O32
(104
c 2/m
oldm
23 )
Am
~OH
!CO
3
(106
c 1/m
oldm
23 )
102
2K
d
1b6.
132.
0928
.662.
563
.261.
0
36.
132.
0911
.960.
426
.363.
6
76.
152.
192.
1760.
545.
516
1.56
146.
132.
092.
3960.
215.
286
0.85
216.
142.
142.
0260.
044.
796
0.65
306.
142.
142.
2960.
03e
5.43
60.
73
1.54
60.
13f
3.65
60.
58
1.40
60.
13g
3.32
60.
07
1c6.
091.
9136
6613
6146
82
36.
112.
0031
565
6076
82
76.
122.
0535
6613
7356
102
146.
101.
9578
.6616
.714
1635
226.
132.
097.
6760.
7217
.062.
8
316.
142.
143.
2160.
147.
606
1.07
376.
132.
094.
4260.
179.
776
1.36
446.
132.
094.
7160.
3010
.461.
5
516.
112.
004.
8860.
11e
9.40
61.
33
quili
briu
mso
lidph
ase
was
Am~O
H!C
O3,
@101
362-
32-7#
,in
alls
olut
ions
.hi
san
dth
efo
llow
ing
five
mea
sure
men
tspe
rfor
med
usin
gpr
oced
ure
~a!.
c Thi
san
dth
efo
llow
ing
seve
nm
easu
rem
ents
perf
orm
edus
ing
proc
edur
e~b
!.d E
quili
briu
mco
nsta
ntfo
rth
ere
actio
nA
m~OH
!CO
3~s!
12H
1�
Am
311
HC
O32
1H
2O.
Itw
asca
lcul
ated
from
the
mea
sure
dam
eric
ium
and
HC
O32
conc
entr
atio
ns,
and
the
calc
ulat
edH
1io
nco
ncen
trat
ion,
whi
chw
asob
tain
edfr
omth
em
easu
red
pHva
lue
usin
gth
eac
tivity
coef
ficie
ntof
0.78
.B
ased
onlit
erat
ure
data
for
the
hydr
olys
isof
Cm
31io
n,as
acl
ose
anal
ogof
Am31
,an
dth
est
abili
tyco
nsta
ntof
the
Am
~CO
3!1
com
plex
,th
eco
ncen
trat
ion
ofth
eA
m31io
nsw
asfo
und
tobe
equa
lto
(95.
96
1.3)
%of
the
mea
sure
dco
ncen
trat
ion
ofA
m~I
II!
inth
eso
lutio
ns.
The
valu
esof
the
cons
tantKob
tain
edin
met
hod~a
!by
the
thre
edi
ffere
ntso
lid–
liqui
dse
para
tion
proc
edur
esaf
ter
30da
yeq
uilib
ratio
ntim
e,an
din
met
hod~b!
afte
r51
day
equi
libra
tion
time
wer
eav
erag
edby
the
auth
ors
toob
tain
K5
583
620
6.U
sing
activ
ityco
effic
ient
sof
0.46
,0.
76,
and
0.78
for
the
Am
31,
HC
O32
,an
dH1
ions
,re
spec
tivel
y,th
eco
nsta
ntat
zero
ioni
cst
reng
thw
asob
tain
edasK
05
3356
120.
e Cen
trifu
gatio
non
ly.
f Cen
trifu
gatio
nan
dfil
trat
ion
thro
ugh
a0.
2mm
filte
r.g C
entr
ifuga
tion
and
filtr
atio
nth
roug
ha
0.01
5mm
filte
r.
675675IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
mer
iciu
mtr
is~ca
rbon
ate!;
Am
2~C
O3) 3
;@
#;or
Am
eric
ium
hydr
oxoc
arbo
nate
;A
m~OH
!CO
3;
@101
362-
32-7#
~2!
Car
bon
diox
ide;
CO 2
;@1
24-3
8-9#
~3!
Sod
ium
perc
hlor
ate;
NaC
lO 4;
@760
1-89
-0#~4
!W
ater
;H 2
O;
@773
2-18
-5#
W.
Run
de,
G.
Mei
nrat
h,an
dJ.
I.K
im,
Rad
ioch
im.
Act
a58
Õ59,
93–
100~
1992
!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8p
2~p
artia
lpre
ssur
eof
CO 2!
/%:
0.03
;1;
100
c 3/m
oldm
23 :
0.1
J.H
ala
Exp
erim
enta
lDat
aT
heso
lubi
lity
ofA
m2~
CO
3!3
and
Am
~OH
!CO
3in
0.1
mol
dm2
3N
aClO
4so
lutio
nw
asm
easu
red
asa
func
tion
ofpH
and
equi
libriu
mco
ncen
trat
ion
ofC
O 322io
n,at
25°C
and
part
ial
pres
sure
sof
CO
2of
0.03
%,
1%,
and
100%
.T
heex
perim
enta
lda
taw
ere
not
repo
rted
.U
sing
the
sam
eco
mpu
tatio
nal
proc
edur
eas
inth
eau
thor
s’pr
evio
usw
ork
1,2
the
auth
ors
obta
ined
the
follo
win
gso
lubi
lity
prod
ucts
:K
sp5
@Am
31
#2@C
O322
#35
102
(29.
456
0.18
)m
ol5
dm2
15at
part
ial
pres
sure
ofC
O 2of
1%or
100%
,an
dKsp
5@A
m3
1#@
OH
2#@
CO
322#
510
2(1
8.70
60.
12)
mol
3dm
29
atpa
rtia
lpr
essu
reof
CO 2of
0.03
%.
Sol
idph
ases
ateq
uilib
rium
wer
eid
entifi
edas
Am
2~C
O3) 3
,@
#at
part
ialp
ress
ure
ofC
O 2of
1%or
100%
,an
dA
m~OH
!CO
3,@1
0136
2-32
-7#,
atpa
rtia
lpre
ssur
eof
CO 2of
0.03
%.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
yex
perim
ent,
com
bine
dw
ithpH
titra
tion,
was
cond
ucte
din
a10
0m
Lth
erm
osta
ted
vess
elun
der
diffe
rent
CO
2pa
rtia
lpre
ssur
esus
ing
argo
n/C
O2
gas
mix
ture
s.T
heA
m31
inac
idic
0.1
mol
dm2
3N
aClO
4so
lutio
nw
aspr
ecip
itate
dby
the
addi
tion
of0.
1m
oldm2
3N
aOH
.T
heso
lutio
nw
ithth
epr
ecip
itate
was
left
tost
and
unde
rth
ede
sire
dA
r/C
O2
atm
osph
ere
for
mor
eth
an2
wee
ks.
The
gas
with
agi
ven
com
posi
tion
was
cont
inuo
usly
pass
edth
roug
hth
eve
ssel
tom
aint
ain
aco
nsta
ntpr
essu
reof
CO
2.T
hen
the
pHof
the
solu
tion
was
grad
ually
adju
sted
byad
ditio
nsof
eith
er0.
1m
oldm
23
NaH
CO 3
orN
aOH
.A
fter
equi
libriu
mha
dbe
enat
tain
ed,
the
pHw
asm
easu
red
bya
com
bina
tion
glas
sel
ectr
ode
~RO
SS
-typ
e,O
rion!,
whi
chw
asca
libra
ted
with
mor
eth
anfiv
est
anda
rdbu
ffer
solu
tions
.T
heeq
uilib
rium
Am
31co
ncen
trat
ion
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
UV
spec
tros
copy
mea
surin
gth
eab
sorb
ance
at50
3.2
nm.
The
tota
lam
eric
ium
conc
entr
atio
nw
asde
term
ined
byliq
uid
scin
tilla
tion
coun
ting.
Not
hing
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
n60.
2K
~aut
hors!
.pH
:pr
ecis
ion6
0.02
units
~aut
hors!
.S
olub
ility
prod
uct:
stan
dard
devi
atio
n,se
eab
ove.
Ref
eren
ces:
1 G.
Mei
nrat
han
dJ.
I.K
im,
Rad
ioch
im.
Act
a52Õ5
3,29
~199
1!.
2 G.
Mei
nrat
han
dJ.
I.K
im,
Eur
.J.
Sol
idS
tate
Inor
g.C
hem
.28
,38
3~1
991!
.
Co
~1!
@1 ~2!
~3!
~4!
Va
T/
c 2 c 3
E
a E b T
J
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
eric
ium
hydr
oxoc
arbo
nate
;A
m~OH
!CO
3;01
362-
32-7#
met
hod~
a!:
Sod
ium
hydr
ogen
carb
onat
e;N
aHC
O3;
@144
-55-
8#C
arbo
ndi
oxid
e;C
O 2;@1
24-3
8-9#;
Wat
er;
H 2O
;@7
732-
18-5#
met
hod~
b!:
Sod
ium
carb
onat
e;N
a2C
O3;
@497
-19-
8#;S
odiu
mhy
drox
ide;
NaO
H;@1
310-
73-2#
Wat
er;
H 2O
;@7
732-
18-5#
A.
R.
Fel
my,
D.
Rai
,an
dR
.W
.F
ulto
n,R
adio
chim
.A
cta50,
193
–20
4~19
90!.
riabl
es:
Pre
pare
dby
:
K:
unsp
ecifi
edro
omte
mpe
ratu
rean
dc 3
/mol
dm2
3 :se
eth
ete
xtbe
low
J.H
ala
Exp
erim
enta
lDat
ae
solu
bilit
yof
Am
~OH
!CO
3w
asm
easu
red
inN
aHC
O 3/C
O2
and
Na 2
CO
3/N
aOH
solu
tions
.T
here
sults
,w
hich
show
eda
rath
erw
ide
atte
r,w
ere
repo
rted
ingr
aphi
calf
orm
only
.In
met
hod
~a!
~see
belo
w;p
25
0.00
1at
m,
NaH
CO 3
solu
tions
!,us
ing
Am
~OH
!CO
3pr
epar
edtw
odi
ffere
ntm
etho
ds,
the
syst
ems
requ
ired
36da
yeq
uilib
ratio
nto
obta
inst
eady
stat
eA
mco
ncen
trat
ion
inth
eso
lutio
ns.
The
auth
ors
plai
ned
this
byco
nver
sion
ofth
ein
itial
lyam
orph
ous
solid
tocr
ysta
lline
Am
~OH
!CO
3,@1
0136
2-32
-7#.
The
sam
eeq
uilib
rium
solid
ase
was
foun
dal
soin
met
hod
~b!
with
eith
er0.
07m
oldm
23
Na 2
CO
31N
aOH
atpH
10.5
–13
,or
with
0.00
3–
0.1
mol
dm23
Na 2
CO
3at
8.5
–11
afte
r61
days
ofeq
uilib
ratio
n.T
hus
Am
~OH
!CO
3is
the
equi
libriu
mso
lidph
ase
inso
lutio
nsco
ntai
ning,
0.1
mol
dm2
3
2CO
3,an
dat
pH5.
5–
13.
The
auth
ors
conc
lude
dth
atth
eso
lubi
lity
ofA
m~O
H!C
O3
unde
rth
eco
nditi
ons
used
coul
dbe
stbe
expl
aine
das
sum
ing
Am31
and
Am
~CO
3!n3
-2n
spec
ies
inth
esa
tura
ted
solu
tions
.A
tpH,7,
the
unco
mpl
exed
Am31
ion
isth
edo
min
ant
spec
ies.
pH7
–8.
5,an
dat
pH.
8.5
the
com
plex
esA
m~CO
3!1
and
Am
~CO
3!22
and
Am
~CO
3!22
and
Am
~CO
3!332
pred
omin
ate,
resp
ectiv
ely.
No
icat
ion
ofso
lutio
nco
mpl
exes
cont
aini
ngei
ther
OH
2or
HC
O32
ligan
dsw
asob
serv
ed.
The
follo
win
gco
nsta
nts,
atze
roio
nic
stre
ngth
,re
obta
ined
byap
plyi
ngth
eio
nin
tera
ctio
nth
eory
toex
perim
enta
lda
ta~ b
nar
eov
eral
lst
abili
tyco
nsta
nts
!:~O
H!C
O3~
s,cr
yst!�
Am
311
OH
21
CO
322,
Ksp0
510
222
.5A
m31
1C
O322�
Am
~CO
3!1
,b
15
107.
6A
m31
12C
O322�
Am
~CO
3!22
,b
2
1012
.3A
m31
13C
O322�
Am
~CO
3!332
,b
35
1015
.2
676676 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
The
solu
bilit
yof
Am
~OH
!CO
3w
asm
easu
red
byis
othe
rmal
met
hod
intw
ose
ries
ofex
perim
ents
.In
the
first
met
hod
~a!
the
solu
tions
wer
eco
ntac
ted
with
crys
talli
neA
m~O
H!C
O3.
8m
gof
Am
~OH
!CO
3w
ere
plac
edin
apo
lypr
opyl
ene
cell
with
50m
Laq
ueou
sph
ase.
Sam
ples
wer
eta
ken
afte
rdi
ffere
nttim
ein
terv
als,
cent
rifug
ed,
and24
3 Am
inth
esa
tura
ted
solu
tions
was
dete
rmin
edby
liqui
dsc
intil
latio
nco
untin
g.T
heco
untin
gw
aspe
rfor
med
perio
dica
llyfo
r3
–4
wee
ksto
allo
wse
cula
req
uilib
rium
with
239 N
pto
bees
tabl
ishe
d.In
the
30da
ysex
perim
ent,
addi
tiona
laliq
uots
wer
eta
ken
and
filte
red
thro
ugh
0.2
and
0.01
5mm
filte
rsaf
ter
cent
rifug
atio
n.In
the
seco
ndm
etho
d~b!
the
satu
rate
dso
lutio
nsfr
omth
eab
ove
proc
edur
ew
ere
mad
e0.
1m
oldm2
3H
ClO
4to
diss
olve
the
solid
Am
~OH
!CO
3,th
evo
lum
ew
asm
ade
upto
50m
Lw
ithw
ater
,an
dN
aHC
O 3or
NaO
Hso
lutio
nsto
prod
uce
agai
nth
esa
me
com
posi
tion
asin
met
hod~a
!,an
dth
ere
mai
nder
ofth
epr
oced
ure
was
adop
ted
asde
scrib
edfo
rm
etho
d~a
!.A
llm
easu
rem
ents
wer
eco
nduc
ted
atfix
edpH
whi
chw
asco
ntro
lled
with
apo
tent
iost
at.
The
pHof
the
mea
sure
men
tsw
asse
lect
edso
asto
bew
ithin
aw
ellb
uffe
red
regi
on,
and
atth
esa
me
time
with
inth
epH
inte
rval
nece
ssar
yto
avoi
dhy
drol
ysis
ofA
m~III
!~o
ccur
sat
pH.
6.5!
,an
ddi
ssol
utio
nof
allA
m~O
H!C
O3
~occ
urs
atpH
,5.
0!.
The
conc
entr
atio
nof
HC
O32
ion
was
fixed
byco
ntac
ting
the
solu
tions
with
anat
mos
pher
eof
0.79
2%C
O 2199
.2%
Ar.
The
solid
phas
esw
ere
iden
tified
byx-
ray
diffr
actio
npa
ttern
sw
hich
wer
efo
und
tobe
near
lyid
entic
alw
ithth
ose
ofN
d~OH
!CO
3.1
Am
~OH
!CO
3w
aspr
epar
edby
hydr
olys
isof
Am~III
!tr
ichl
oroa
ceta
teac
cord
ing
toth
epr
oced
ure
for
lant
hani
des.
2
Est
imat
edE
rror
:~a
utho
rs!T
empe
ratu
re:
prec
isio
n61
K.
pH:
prec
isio
n60.
03un
its.
Sol
ubili
ty:
the
erro
r~se
eth
eta
ble!
isth
ede
viat
ion
from
the
aver
age
oftw
oal
iquo
tsta
ken
atea
chsa
mpl
ing
perio
d.H
CO
32io
nco
ncen
trat
ion:6
(0.1
7–
0.19
)310
24
mol
dm2
3 .
Ref
eren
ces:
1 H.
Dex
pert
and
P.
Car
o,M
at.
Res
.B
ull.9,
1577
~197
4!.
2I.
Sal
utsk
yan
dL.
L.Q
uill,
J.A
m.C
hem
.Soc
.72
,330
6~19
50!.
Co
~1!
@1 In ~2!
~3!
~4!
In ~2!
~3!
~4!
Va
T/
c 2 Th
sc by ex ph pH Na
by At
ind
we
Am
5
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
8.2.
Sal
tsof
Car
bona
todi
oxoa
mer
icia
te„V…„-1…
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
mtr
is~ca
rbon
ate!;
Am
2~C
O3!
3;@
#;or
Sod
ium
carb
onat
odio
xoam
eric
iate~V!;
Na~
Am
O2!
CO
3;@
#C
arbo
nate
ion;
CO 322
;@3
812-
32-6#
Sod
ium
chlo
ride;
NaC
l;@764
7-14
-5#W
ater
;H 2
O;
@773
2-18
-5#
E.
Giff
aut
and
P.
Vito
rge,
Mat
er.
Res
.S
oc.
Sym
p.P
roc.
294,
747
–51
~199
3!.
riabl
es:
Pre
pare
dby
:
K:
294
/%:
100
~par
tialp
ress
ure!
/mol
dm2
3 :0.
1;4
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
typr
oduc
tsof
Am 2
~CO
3!3
and
Na~A
mO
2!C
O3
at21
°Cin
NaC
lsol
utio
ns
NaC
l(c
3/m
oldm
23 )
2lo
gK
sp~1
!a,c
2lo
gK
sp~2
!b,c
0.1
34.26
0.3
—
430
.46
0.4
10.56
0.3
sp5
@Am
31#2 @
CO
322#3 .
sp5
@Na1
#@A
mO
21#@
CO
322#.
once
ntra
tions
inm
oldm2
3 .
ditio
nali
nfor
mat
ion:
4m
oldm
23
NaC
lthe
Am
solu
bilit
yw
asfo
und
tobe
high
erby
1–
3or
ders
ofm
agni
tude
than
that
in0.
1m
oldm
23
NaC
l,an
dcl
ose
Np~
V!
solu
bilit
yun
der
sim
ilar
cond
ition
s.1,2
Inth
epr
esen
ceof
met
allic
iron
asa
redu
cing
agen
t,th
eA
mso
lubi
lity
decr
ease
dw
ithin
eek
toth
at0.
1m
oldm
23
NaC
l.T
his
beha
vior
was
expl
aine
dby
the
auth
ors
asbe
ing
due
tora
diol
ytic
oxid
atio
nof
Am
~III
!to
Am
~V!.
3
pH,
6.5,
NaA
mO 2
CO
3w
asth
eeq
uilib
rium
solid
phas
eat
equi
libriu
mC
O322
ion
conc
entr
atio
ns.
102
5m
oldm
23 .
Sol
ubili
tyda
tare
repo
rted
ingr
aphi
cal
form
only
,an
dsh
owth
atm
inim
umA
m~I
II!
and
Am
~V!
solu
bilit
yoc
curs
atap
prox
imat
ely
25–
102
4m
oldm
23
carb
onat
eio
nco
ncen
trat
ion.
Als
ore
port
edw
ere
stab
ility
cons
tant
sof
ofA
m~I
II!~
CO
3!3
22
n(n
51
–3
)co
mpl
exes
0.1
and
4m
oldm
23
NaC
l,an
dA
mO 2
~CO
3!1
-2n
~n5
1an
d2!
com
plex
esin
4m
oldm
23
NaC
l.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
lubi
lity
mea
sure
men
tsw
ere
perf
orm
edas
pHtit
ratio
noc
edur
ew
ithA
m 2~C
O3!
3as
the
star
ting
solid
inca
rbon
ate
ffer
solu
tions
.T
hesu
spen
sion
was
stirr
edat
the
desi
red
pHfo
r13
wee
ks.
Afte
req
uilib
ratio
n,sa
mpl
esof
the
satu
rate
dso
lutio
nsw
ere
filte
red,
the
pHw
asm
easu
red
with
aco
mbi
ned
glas
sel
ectr
ode
that
was
calib
rate
dw
ithN
aHC
O 3/N
a 2C
O3
/NaC
lor
HC
l/NaC
lsol
utio
ns,
and
the
Am
solu
bilit
yw
asde
term
ined
byliq
uid
scin
tilla
tion
coun
ting.
Am
2~C
O3!
3w
aspr
epar
edby
equi
libra
ting
anam
eric
ium
solu
tion
in0.
5m
oldm
23
carb
onat
ew
ithbu
bblin
gC
O 2ga
sth
roug
hth
eso
lutio
nfo
ra
perio
dof
3w
eeks
.
Est
imat
edE
rror
:N
oin
form
atio
nre
port
ed.
Ref
eren
ces:
1 L.M
aya,
Inor
g.C
hem
.22,
2093
~198
3!.
2 I.G
rent
he,P
.Rob
ouch
,and
P.V
itorg
e,J.
Less
-Com
mon
Met
als
122,
225
~198
6!.
3 S.
Mag
irius
,W
.T
.C
arna
llan
dJ.
I.K
im,
Rad
ioch
im.
Act
a38,
29~1
985!
.
677677IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Tw
ose
ries
ofm
easu
rem
ents
wer
eco
nduc
ted.
Inon
e@m
etho
d~a
!#,
afix
edpa
rtia
lpre
ssur
eof
CO 2o.
d.0.
001
atm
inul
trap
ure
Ar
gas
was
adju
sted
ina
glov
ebo
x.A
llH
CO
3so
lutio
nsw
ere
initi
ally
equi
libra
ted
with
the
cham
ber
gas
for
2–
3da
ysbe
fore
thes
eso
lutio
nsw
ere
adde
dto
the
prec
ipita
ted
mat
eria
lin
cent
rifug
etu
bes.
The
tube
sw
ere
kept
slig
htly
capp
edto
allo
wex
chan
geof
CO 2
with
the
glov
ebo
xat
mos
pher
e,an
dw
ere
shak
enon
anor
bita
lsha
ker.
Inth
ese
cond
serie
sof
expe
rimen
ts@m
etho
d~b!
#,th
epr
ecip
itate
dA
m~OH
!CO
3
obta
ined
inm
etho
d~a!
was
was
hed
with
de-io
nize
dw
ater
,re
susp
ende
din
eith
er0.
003
–0.
1m
oldm23
Na 2
CO
3~in
itial
pH10
.6–
11.3!
,or
in0.
07m
oldm
23
Na 2
CO
3w
hose
pHw
asad
just
edw
ithC
O 2-f
ree
NaO
Hto
reac
hpH
11.7
–13
,an
dsh
aken
.E
ach
ofth
ese
two
proc
edur
esw
ere
run
with
Am
~OH
!CO
3pr
epar
edby
proc
edur
es~A!
and
~B!
~see
belo
w!.S
uspe
nsio
nsof
Am~O
H!C
O3
wer
eeq
uilib
rate
dfo
rpr
olon
ged
perio
dsof
time,
and
sam
ples
from
the
satu
rate
dso
lutio
nsw
ere
take
naf
ter
inte
rval
sra
ngin
gfr
om2
to78
days
.T
hepH
ofth
esu
spen
sion
sw
asm
easu
red
with
aco
mbi
natio
ngl
ass
elec
trod
eO
rion/
Ros
s,ca
libra
ted
with
pHbu
ffers
.T
hesa
mpl
esw
ere
cent
rifug
edat
2000
gfo
r7
–10
min
,al
iquo
tsof
the
supe
rnat
ant
wer
efil
tere
dth
roug
hA
mic
onty
peF
-25
Cen
trifl
om
embr
ane
cone
s~;0.
0018
mm
pore
size!
.F
iltra
tes
wer
eac
idifi
ed,
and
befo
reA
man
alys
isst
ored
for
;30
days
toal
low
the
239 N
p~p
rodu
ced
from
the24
3 Am
~OH
!CO
3in
the
orig
inal
susp
ensi
ons!to
deca
yto
near
secu
lar
equi
libriu
mw
ith24
3 Am
pres
ent
inea
chvi
al.
Sam
ples
wer
eco
unte
dus
ing
high
-pur
ityG
epl
anar
dete
ctor
s.T
otal
chem
ical
anal
ysis
ofth
esa
tura
ted
solu
tions
was
perf
orm
edby
the
indu
ctiv
ely
coup
led
plas
ma~
ICP!
met
hod.
Tot
alin
orga
nic
carb
onw
asde
term
ined
byus
ing
aC
oulo
met
rics
Inc.
Mod
el50
20to
talc
arbo
nan
alyz
er.
Sol
idph
ases
wer
ech
arac
teriz
edby
x-ra
ydi
ffrac
tion.
Am
~OH
!CO
3w
aspr
epar
edby
two
met
hods
:~A
!by
prec
ipita
tion
byad
ding
0.1
mL~
;4.
5m
gA
m!
of24
3 Am
stoc
kso
lutio
nto
30m
L0.
01m
oldm
23
NaH
CO 3
atpH
7in
apo
lypr
opyl
ene
cent
rifug
eco
ne;
the
prec
ipita
tew
asw
ashe
dtw
ice
with
20m
L0.
0004
mol
dm2
3N
aHC
O 3at
pH8;
~B!
byho
mog
eneo
uspr
ecip
itatio
nof
Am~
III!
tric
hlor
oace
tate
.1S
olut
ions
with
Am
~OH
!CO
3pr
ecip
itate
wer
ehe
ated
for
about6
hat
50°C
,al
low
edto
cool
over
nigh
t,an
dth
enw
ashe
dw
ith0.
0004
mol
dm2
3N
aHC
O 3at
pH8.
Ref
eren
ces:
1 R.
G.
Cha
rles,
J.In
org.
Nuc
lChe
m.
27,
1489
~196
5!.
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
p2
c 3 a K b K c C Ad
In to 1w
At
we
10 in Me
So
pr bu
J
8.3.
Am
eric
ium
„III…
For
mat
e
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Am
eric
ium
~III
!tr
is~f
orm
ate!
;A
m~C
HO
2!3;
@182
74-7
1-0#
For
mic
acid
;C
H 2O
2;@6
4-18
-6#
Per
chlo
ricac
id;
HC
lO 4;
@760
1-90
-3#S
odiu
mpe
rchl
orat
e;N
aClO 4;
@760
1-89
-0#W
ater
;H 2
O;
@773
2-18
-5#
A.
V.
Ana
nev
and
N.
N.
Kro
t,R
adio
khim
iya26
,75
5–
8~19
84!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
2/m
oldm
23 :
0–
0.1
/mol
dm2
3 :1.
9–
2.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at25
°Cof
Am~
CH
O2!
3in
CH
2O2
/HC
lO4
/NaC
lO4
solu
tions
lubi
lity
at25
°Cof
Am~
CH
O2!
3w
asm
easu
red
in0.
2m
oldm2
3so
lutio
nsof
form
icac
idco
ntai
ning
0–
0.1
mol
dm23
HC
lO4,
and
ClO
4to
mai
ntai
nio
nic
stre
ngth
of2.
0m
oldm2
3 .T
here
sults
wer
ere
port
edin
grap
hica
lfor
m.
Fro
mth
eso
lubi
lity
data
the
solu
bilit
yod
ucto
fAm~
CH
O2!
3w
asca
lcul
ated
tobe
1.053
102
9m
ol4
dm2
12at
ioni
cst
reng
thof
2.0
mol
dm23 .T
heca
lcul
atio
nsw
ere
perf
orm
edin
gth
edi
ssoc
iatio
nco
nsta
ntof
form
icofK
a52.
7310
24
mol
dm2
3at
ioni
cst
reng
thof
2.0
mol
dm23 ,
and
taki
ngin
toac
coun
tth
eis
tenc
ein
the
satu
rate
dso
lutio
nsof
the
Am
~CH
O2!
21an
dA
m~C
HO
2!21
com
plex
es.
The
irst
abili
tyco
nsta
nts
wer
eal
soca
lcul
ated
.T
heui
libriu
mso
lidph
ase
was
Am~C
HO
2!3,
@182
74-7
1-0#.
Als
ore
port
ed,
ingr
aphi
calf
orm
,w
asth
eso
lubi
lity
at25
°Cof
Am
~CH
O2!
3in
dium
form
ate-
NaC
lO 4so
lutio
ns.T
heso
lubi
lity
ofA
m~C
HO
2!3
inw
ater
was
repo
rted
tobec
15
7.32
310
23
mol
dm2
3 .It
was
nots
tate
dpl
icitl
yif
the
latte
rva
lue
was
obta
ined
byca
lcul
atio
nor
expe
rimen
tally
.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sA
m~C
HO
2!3
was
equi
libra
ted
thso
lutio
nsof
the
desi
red
conc
entr
atio
nfo
r10
hin
rmos
tate
dfla
sks.
Bef
ore
mea
sure
men
ts,
the
solu
tions
wer
eed
from
air
bypa
ssin
gth
roug
hth
ema
stre
amof
argo
nga
s.th
efil
tere
dsa
tura
ted
solu
tions
,pH
was
dete
rmin
edte
ntio
met
rical
ly,
and
the
conc
entr
atio
nof
Am
~III
!ec
trop
hoto
met
rical
lyin;
0.6
mol
dm2
3H
ClO
4at
503
nm.
epH
met
erus
edw
asca
llibr
ated
agai
nst
mol
dm2
3 NaC
lO4.
Sol
idph
ases
wer
eid
entifi
edby
x-ra
yfr
actio
n.
243 A
m~C
HO
2!3
was
prep
ared
from
fres
hly
prec
ipita
ted
Am
~OH
! 3an
dco
ncen
trat
edfo
rmic
acid
acco
rdin
gto
Ref
s.1,
2.T
heso
lidpr
oduc
tw
asce
ntrif
uged
,w
ashe
dw
ith10
mol
dm23
form
icac
idan
d50
%et
hano
l,an
dke
ptov
erK
OH
.A
llot
her
chem
ical
sw
ere
reag
ent
grad
epr
oduc
ts.
Dou
bly
dist
illed
wat
erw
asus
ed.
Est
imat
edE
rror
:T
empe
ratu
repr
ecis
ion6
0.5
K~a
utho
rs!S
olub
ility
:er
ror
not
repo
rted
.
Ref
eren
ces:
1 L.R
.C
risle
r,J.
Inor
g.N
ucl.
Che
m.34
,32
63~1
972!
.2 F
.W
eige
lan
dN
.te
rMee
r,In
org.
Nuc
l.C
hem
.Le
tt.3,40
3~1
967!
.
678678 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Rub
idiu
mca
rbon
atod
ioxo
amer
icia
te~V!;
RbA
mO
2CO
3;@
#~2
!R
ubid
ium
carb
onat
e;R
b 2CO
3;@
#~3
!W
ater
;H 2
O;
@773
2-18
-5#
J.P
.Nig
on,R
.A.P
enne
man
n,E
.Sta
ritzk
i,T
.K.K
eena
n,an
dL.
B.
Asp
rey,
J.P
hys.
Che
m.58
,40
3–
4~1
954!
.
Var
iabl
es:
Pre
pare
dby
:
100
w2
/mas
s%
:5.
64;
6.73
J.H
a´ l
a
Exp
erim
enta
lDat
a
Sol
ubili
tyof
RbA
mO 2
CO
3in
Rb 2
CO
3so
lutio
nsa
Rb 2
CO
3
(100
w2
/mas
s%
)R
b 2C
O3
(m2
/mol
kg2
1 )b~A
mO
2!2C
O3
(100
w/m
ass
%)
RbA
mO
2CO
3
(100
w1
/mas
s%
)bR
bAm
O2C
O3
(m1
/mol
kg2
1 )b
5.64
0.25
90.
0043
0.00
590.
0001
49
6.73
0.31
40.
376
0.51
80.
0133
a Com
posi
tion
ofth
eeq
uilib
rium
solid
phas
ew
asre
port
edto
beR
bAm
O2C
O3,
@#.
The
auth
ors
stat
ed,
how
ever
,th
ata
hydr
ate
ofth
esa
ltco
uld
not
beru
led
out.
Tem
pera
ture
ofth
em
easu
rem
ents
was
not
spec
ified
.b C
alcu
late
dby
com
pile
r.F
oram
eric
ium
,A
r524
3.06
~243 A
m!
was
used
.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Ver
ydi
lute
solu
tions
ofA
m~III
!in
1m
oldm
23
Rb 2
CO
3w
ere
oxid
ized
byoz
one
toA
m~V!.
The
resu
lting
prec
ipita
tew
asce
ntrif
uged
and
then
slur
ried
in0.
1m
oldm2
3R
b 2C
O3.
Wei
ghed
sam
ples
ofth
esu
pern
atan
tliq
uid
wer
ew
ithdr
awn
for
anal
ysis
.A
mer
iciu
mw
asde
term
ined
radi
omet
rical
ly,
CO
2w
asde
term
ined
byev
olut
ion
into
Ba~O
H! 2
solu
tion
acco
rdin
gto
Ref
.1
usin
ga
clos
edsy
stem
with
ape
rista
ltic
pum
pto
circ
ulat
eth
ega
san
den
sure
com
plet
eab
sorp
tion
ofC
O2.
Com
posi
tion
ofth
eso
lidph
ases
was
dete
rmin
edby
Sch
rein
emak
ers’
met
hod.
Tem
pera
ture
and
equi
libra
tion
time
was
not
repo
rted
.
Not
hing
spec
ified
.
Est
imat
edE
rror
:S
olub
ility
:pr
ecis
ion6
1%~a
utho
rs!.
Ref
eren
ces:
1 W.
C.
Sch
roed
eran
dE
.P
.P
artr
idge
,In
d.E
ng.
Che
m.,
Ana
l.E
d.4,
262
~193
5!.
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
c 2 c 3 c 4 So
Na
pr us ex eq so ex Me
Iso
wi
the
fre
In po sp Th
2.0
dif
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
te
perio
dica
llyst
irred
with
HC
lO 4so
lutio
nsin
ther
mos
tate
dte
sttu
bes
for
3–
5h,
the
time
requ
ired
tore
ach
equi
libriu
m.
The
conc
entr
atio
nof
amer
iciu
min
the
satu
rate
dso
lutio
nsw
asde
term
ined
radi
omet
rical
ly.
Det
ails
ofth
em
etho
dw
ere
not
spec
ified
.
oxal
icac
idor
sodi
umox
alat
eon
a0.
5m
oldm
HN
O3
solu
tion
cont
aini
ng10
–15
gdm
23
of24
1 Am
.T
hepr
ecip
itate
was
anal
yzed
grav
imet
rical
lyby
igni
tion
toA
mO 2.
Pre
cipi
tate
sob
tain
edat
20–
90°C
had
the
com
posi
tion
ofA
m2~
C2O
4!3•
9H2O
.S
ourc
ean
dpu
rity
of24
1 Am
and
othe
rch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:6
0.1
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 C.E
.Cro
utha
mel
and
D.S
.Mar
tin,J
.Am
.Che
m.S
oc.
72,1
382
~195
0!.
2 L.S
.D
arke
n,J.
Am
.C
hem
.S
oc.63,
1007
~194
1!.
3 G.
D.
Pin
chin
gan
dR
.G
.B
ates
,J.
Res
.N
at.
Bur
.S
td.
40,
405
~194
8!.
4 C.
E.
Cro
utha
mel
and
D.
S.
Mar
tin,
J.A
m.
Che
m.
Soc
.73
,56
9~1
951!
.5 T
.L.
Mar
kin,
J.In
org.
Nuc
l.C
hem
.7,29
0~1
958!
.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4) 3
;@6
5113
-20-
4#P
otas
sium
oxal
ate;
C 2O4K
2;
@583
-52-
8#W
ater
;H 2
O;
@773
2-18
-5#
A.
Lebe
dev,
S.
V.
Piro
zhko
v,V
.M
.R
azbi
tnoi
,an
dG
.N
.Y
akov
lev,
Rad
iokh
imiy
a2,
351
–6
~196
0!.
riabl
es:
Pre
pare
dby
:
K:
298
/mol
dm2
3 :0.
1–
1.45
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofA
m 2~C
2O4!
3in
C2O
4K2
solu
tions
atco
nsta
ntio
nic
stre
ngth
of4.
35m
oldm23
a
C2O
4K2
(c2
/mol
dm2
3 )A
m(1
04m
oldm
23 )
Am
2~C
2O4!
3
(104
c 1/m
oldm
23 )b
0.10
01.
420.
71
0.20
04.
642.
32
0.35
19.
324.
66
0.60
032
.816
.4
1.00
70.5
35.3
1.45
8.86
44.3
hena
ture
ofth
eeq
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
The
salt
used
tom
aint
ain
cons
tant
ioni
cst
reng
thw
asno
tsp
ecifi
ed.
alcu
late
dby
com
pile
r.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sA
m2~
C2O
4!3•
9H2O
was
riodi
cally
stirr
edw
ithC 2
O4K
2so
lutio
nsin
ther
mos
tate
dte
stes
for
3–
5h,
the
time
requ
ired
tore
ach
equi
libriu
m.
The
ncen
trat
ion
ofam
eric
ium
inth
esa
tura
ted
solu
tions
was
term
ined
radi
omet
rical
ly,
the
tota
loxa
late
conc
entr
atio
nw
aste
rmin
edby
titra
tion
with
stan
dard
KM
nO 4so
lutio
n.
Am
~III
!ox
alat
ew
aspr
epar
edby
actio
nof
asa
tura
ted
solu
tion
ofox
alic
acid
orso
dium
oxal
ate
ona
0.5
mol
dm23
HN
O3
solu
tion
cont
aini
ng10
–15
gdm
23
of24
1 Am
.T
hepr
ecip
itate
was
anal
yzed
grav
imet
rical
lyby
igni
tion
toA
mO 2.
Pre
cipi
tate
sob
tain
edat
20–
90°C
had
the
com
posi
tion
ofA
m2~
C2O
4!3•
9H2O
.S
ourc
ean
dpu
rity
of24
1 Am
and
othe
rch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:6
0.1
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
679679IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
8.4.
Am
eric
ium
„III…
Oxa
late
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4!
3;@6
5113
-20-
4#~2
!P
erch
loric
acid
;H
ClO 4
;@7
601-
90-3#
~3!
Wat
er;
H 2O
;@7
732-
18-5#
A.
Lebe
dev,
S.
V.
Piro
zhko
v,V
.M
.R
azbi
tnoi
,an
dG
.N
.Y
akov
lev,
Rad
iokh
imiy
a2,
351
–6
~196
0!.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
05–
0.28
6J.
D.
Nav
ratil
and
J.H
a´ l
a
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofA
m 2~C
2O4!
3in
HC
lO4
solu
tions
a
HC
lO4
(c2
/mol
dm2
3 )A
m(1
04m
oldm
23 )
Am
2~C
2O4!
3
(104
c 1/m
oldm
23 )b
Ksp
c
(1031
mol
5dm
215
)
0.05
00.
557
0.27
9d
0.10
01.
160.
580
d
0.19
24.
402.
202.
28
0.28
67.
693.
852.
31
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
noti
nves
tigat
ed.B
ased
onth
eau
thor
s’ch
emic
alan
alys
isof
amer
iciu
mox
alat
epr
ecip
itaob
tain
edin
0.5
mol
dm2
3H
NO
3,th
eso
lidph
ase
coul
dbe
take
nto
beA
m2~
C2O
4!3•
9H2O
,@
#,or
,ac
cord
ing
toR
ef.
5,A
m2~
C2O
4!3•
7H2O
.b C
alcu
late
dby
com
pile
r.c C
alcu
late
dby
auth
ors
asKsp
5g
32a
ox3@A
m3
1#2
,w
here
g3
isth
eac
tivity
coef
ficie
ntof
the
Am31
ion
and
aox
isth
eac
tivity
ofth
eC 2
O422
ion
calc
ulat
edas
aox
5K
a1K
a2c o
x/ $
aH2
1K
a1a
H/g
11
Ka1
Ka2
/g2%.
1H
ere
c ox
isth
eto
talc
once
ntra
tion
ofox
alat
ein
solu
tion
~obt
aine
das
c ox5
3/2 @
Am
31
#!,
aH
isth
eac
tivity
ofH1
ion,
Ka1
and
Ka2
are
the
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
55.
363
102
2m
oldm
23 ,2
and
Ka2
55.
423
102
5m
oldm
23 ,3
both
at25
°C,
andg
1an
dg
2ar
eth
eac
tivity
coef
ficie
nts
ofth
eH
C 2O42
and
C2O
422io
ns,
resp
ectiv
ely.
Num
eric
alva
lues
ofth
eac
tivity
coef
ficie
nts
ofio
nsin
oxal
ate
solu
tions
wer
eta
ken
from
Ref
.4.
d Not
repo
rted
.
Add
ition
alin
form
atio
n:T
heau
thor
sal
sore
port
edon
thei
run
succ
essf
ulat
tem
pts
tode
term
ine
the
solu
bilit
yof
Am
2~C
2O4!
3in
wat
er.
Inre
peat
edm
easu
rem
ents
,th
eso
lubi
lity
fluct
uate
dbe
twee
n102
5an
d10
24
mol
dm2
3 ,A
m~I
II!
and
the
auth
ors
ascr
ibed
this
toth
ehy
drol
ysis
ofA
m31
ion.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Am
2~C
2O4!
3•9H
2Ow
asA
m~I
II!
oxal
ate
was
prep
ared
byac
tion
ofa
satu
rate
dso
lutio
nof
23
Co
~1!
~2!
~3!
Va
T/
c 2 a T b C Me
Iso
pe tub
co de de
J
0.10
00.
138
5.00
40.
537
0.10
00.
196
5.25
70.
693
0.10
00.
285
5.54
70.
839
0.10
00.
382
5.78
01.
44
0.05
00.
359
6.03
11.
76
0.00
066
0.15
57.
261
44.0
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.B
ased
onth
eau
thor
s’an
alys
isof
Am
~III
!ox
alat
eob
tain
edin
0.5
mol
dm2
3H
NO
3so
lutio
nsth
eco
mpi
ler
assu
mes
the
solid
phas
ew
asA
m2~
C2O
4!3•
9H2O
,@
#.b A
ctiv
ityof
the
H1
ion.
c Act
ivity
ofth
eC
2O
422
ion
calc
ulat
edas
aox
5K
a1K
a2c o
x/ $
aH2
1K
a1a
H/g
11
Ka1
Ka2
/g2%.
1H
ere
c ox
isth
eto
talc
once
ntra
tion
ofox
alat
ein
solu
tion,
aH
isth
eac
tivity
ofH1
ion,
Ka1
and
Ka2
are
the
diss
ocia
tion
cons
tant
sof
oxal
icac
id,
Ka1
55.
363
102
2m
oldm
23 ,2
and
Ka2
55.
423
102
5m
oldm
23 ,3
both
at25
°C,
andg
1an
dg
2ar
eth
eac
tivity
coef
ficie
nts
ofth
eH
C 2O42
2io
ns,
resp
ectiv
ely,
take
nfr
omC
rout
ham
elan
dM
artin
.4
d Con
cent
ratio
nof
Am~
III!
inth
esa
tura
ted
solu
tions
.
Add
ition
alin
form
atio
n:F
rom
the
depe
nden
ceof
the
solu
bilit
yof
Am~III
!ox
alat
eon
the
oxal
ate
ion
activ
ityth
eco
nsec
utiv
ein
stab
ility
cons
tant
s,at
zero
ioni
cst
reng
th,
ofth
eA
m~C
2O4!
1,
Am
~C2O
4) 22
,an
dA
m~C
2O4) 33
2co
mpl
exes
wer
eob
tain
edasK
15
(5.0
60.
3)3
102
8,
K25
(6.9
60.
7)3
102
5,
and
K35
(1.6
60.
2)3
102
1,
alli
ndm
3m
ol2
1 ,re
spec
tivel
y.
Aux
iliar
yIn
form
atio
n
thod
ÕApp
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
ther
mal
met
hod
used
.E
xces
sA
m2~
C2O
4!3•
9H2O
was
riodi
cally
stirr
edw
ithso
lutio
nsof
the
desi
red
com
posi
tion
ther
mos
tate
dte
sttu
bes
for
3–
5h,
the
time
requ
ired
tore
ach
uilib
rium
.T
heco
ncen
trat
ion
ofam
eric
ium
inth
esa
tura
ted
lutio
nsw
asde
term
ined
radi
omet
rical
ly,
the
tota
loxa
late
ncen
trat
ion
was
dete
rmin
edby
titra
tion
with
stan
dard
nO4
solu
tion.
The
pHof
the
satu
rate
dso
lutio
nsw
aste
rmin
edw
itha
quin
hydr
one
elec
trod
e.
Am
~III
!ox
alat
ew
aspr
epar
edby
actio
nof
asa
tura
ted
solu
tion
ofox
alic
acid
orso
dium
oxal
ate
ona
0.5
mol
dm23
HN
O3
solu
tion
cont
aini
ng10
–15
gdm
23
of24
1 Am
.T
hepr
ecip
itate
was
anal
yzed
grav
imet
rical
lyby
igni
tion
toA
mO 2.
Pre
cipi
tate
sob
tain
edat
20–
90°C
had
the
com
posi
tion
ofA
m2~
C2O
4!3•
9H2O
.S
ourc
ean
dpu
rity
of24
1 Am
and
othe
rch
emic
als
used
not
spec
ified
.
Est
imat
edE
rror
:T
empe
ratu
re:6
0.1
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 C.E
.Cro
utha
mel
and
D.S
.Mar
tin,J
.Am
.Che
m.S
oc.
72,1
382
~195
0!.
2 L.S
.D
arke
n,J.
Am
.C
hem
.S
oc.63,
1007
~194
1!.
3 G.
D.
Pin
chin
gan
dR
.G
.B
ates
,J.
Res
.N
at.
Bur
.S
td.
40,
405
~194
8!.
4 C.
E.
Cro
utha
mel
and
D.
S.
Mar
tin,
J.A
m.
Che
m.
Soc
.73
,56
9~1
951!
.
680680 JIRI HALA
Com
pone
nts:
Orig
inal
Mea
sure
men
ts:
~1!
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4) 3
;@6
5113
-20-
4#~2
!P
otas
sium
oxal
ate;
C 2O4K
2;
@583
-52-
8#~3
!P
erch
loric
acid
;H
ClO 4
;@7
601-
90-3#
~4!
Wat
er;
H 2O
;@7
732-
18-5#
A.
Lebe
dev,
S.
V.
Piro
zhko
v,V
.M
.R
azbi
tnoi
and
G.
N.
Yak
ovle
v,R
adio
khim
iya2
,35
1–
6~1
960!
.
Var
iabl
es:
Pre
pare
dby
:
T/K
:29
8c 2
/mol
dm2
3 :0.
05–
0.23
8ac
tivity
ofH
1io
n/m
oldm
23 :
0.00
022
–0.
359
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofA
m 2~C
2O4!
3in
C2O
4K2–
HC
lO4
solu
tions
a
C2O
422
~mol
dm2
3 !H
1b
~mol
dm2
3 !2
log
a~C
2O
422
)c
~mol
dm2
3 !A
m~I
II!d
(105
mol
dm2
3 )
0.23
8—
1.30
124
.6
0.21
4—
1.34
721
.8
0.13
0—
1.49
58.
04
0.09
19—
1.60
23.
99
0.05
54—
1.74
52.
57
0.14
00.
000
224
1.81
83.
79
0.11
50.
000
316
1.98
33.
15
0.10
00.
000
447
2.22
11.
30
0.09
00.
000
852
2.41
71.
41
0.08
00.
001
552.
695
0.89
2
0.12
00.
003
162.
857
0.54
4
0.10
00.
005
133.
143
0.52
3
0.10
00.
009
143.
411
0.34
1
0.10
00.
0123
3.55
80.
400
0.10
00.
0199
3.80
10.
456
0.10
00.
0289
4.00
40.
483
0.10
00.
0489
4.31
30.
407
0.10
00.
0562
4.30
40.
290
0.10
00.
0832
4.65
20.
393
0.10
00.
115
4.87
30.
425
Me
Iso
pe in eq so co KM
de
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
ofmpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4) 3
;@1
3278
-81-
4#O
xalic
acid
;C 2
H2O
4;
@144
-62-
7#N
itric
acid
;H
NO
3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
S.A
.Zak
olup
inan
dE
.V.K
orab
lin,R
adio
khim
iya,19
,698
–70
1~1
977!
.
riabl
es:
Pre
pare
dby
:
K:
287
–33
3/m
oldm
23;
0.01
–0.
4/m
oldm
23 :
0–
1.0
J.D
.N
avra
tilan
dJ.
Ha
´ la
Exp
erim
enta
lDat
a
Sol
ubili
tyof
Am
2~C
2O4!
3in
C2H
2O4–
HN
O3
solu
tions
asa
func
tion
ofte
mpe
ratu
rea
mpe
ratu
re~°
C!
C2H
2O4
(c2
/mol
dm2
3 )
HN
O3
(c3
/mol
dm2
3 )
00.
10.
30.
50.
71.
0
Sol
ubili
tyof
Am
2~C
2O4!
3re
port
edas
mg
Am~I
II!/
dm3 :
140
36.4
137
283
592
718
992
0.01
0.19
0.66
5.6
2983
232
0.05
0.16
0.5
1.13
3.48
10.5
26.4
0.1
0.16
0.38
0.7
1.7
4.2
13.5
0.2
0.21
0.4
0.58
1.36
2.6
6.1
0.3
0.30
0.38
0.68
1.3
2.0
4.1
0.4
0.40
0.44
0.78
1.26
1.84
3.54
300.
019.
117
.673
.520
1.6
414
1077
0.05
5.2
12.6
26.1
58.4
113.
622
5
0.1
3.7
6.4
10.4
16.4
37.8
57.6
0.2
2.6
3.3
4.3
6.1
11.8
19.6
0.3
2.1
3.2
3.7
5.4
9.2
14.2
0.4
3.0
3.3
4.0
5.9
9.5
12.6
450.
0119
.245
.328
053
711
9518
40
0.05
12.0
25.9
46.1
99.2
323
702
0.1
5.0
8.9
16.2
38.3
115.
623
2
0.2
2.0
3.42
8.1
1839
.687
.3
0.3
2.3
3.65
8.73
18.4
533
.375
.5
0.4
5.5
6.9
14.1
323
534
.569
.5
600.
0178
164
480
1248
2752
—
0.05
2555
76.8
149.
667
2—
Sol
ubili
tyof
Am
2~C
2O4!
3as
c 1/m
oldm
23
~com
pile
rs!:
140
7.55
310
25
2.84
310
24
5.87
310
24
1.23
310
23
1.49
310
23
2.06
310
23
0.01
3.94
310
27
1.37
310
26
1.16
310
25
6.02
310
25
1.72
310
24
4.81
310
24
0.05
3.32
310
27
1.04
310
26
2.34
310
26
7.22
310
26
2.18
310
25
5.48
310
25
0.1
3.32
310
27
7.88
310
27
1.45
310
26
3.53
310
26
8.71
310
26
2.80
310
25
0.2
4.36
310
27
8.30
310
27
1.20
310
26
2.82
310
26
5.39
310
26
1.26
310
25
0.3
6.22
310
27
7.88
310
27
1.41
310
26
2.70
310
26
4.15
310
26
8.51
310
26
0.4
8.30
310
27
9.13
310
27
1.62
310
26
2.61
310
26
3.82
310
26
7.34
310
26
300.
011.
893
102
53.
653
102
51.
523
102
44.
813
102
48.
593
102
42.
233
102
3
0.05
1.08
310
25
2.61
310
25
5.41
310
25
1.21
310
24
2.36
310
24
4.67
310
24
0.1
7.68
310
26
1.33
310
25
2.16
310
25
3.40
310
25
2.84
310
25
1.20
310
24
0.2
5.39
310
26
6.85
310
26
8.92
310
26
1.26
310
25
2.45
310
25
4.07
310
25
0.3
4.36
310
26
6.64
310
26
7.68
310
26
1.12
310
25
1.91
310
25
2.95
310
25
0.4
6.22
310
26
6.85
310
26
8.30
310
26
1.22
310
25
1.97
310
25
2.61
310
25
450.
013.
983
102
59.
403
102
55.
813
102
41.
113
102
32.
483
102
33.
823
102
3
681681IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Com
pone
nts:
Eva
luat
or:
~1!
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4) 3
;@6
5113
-20-
4#~2
!O
xalic
acid
;C 2
H2O
4;
@144
-62-
7#~3
!N
itric
acid
;H
NO
3;
@769
7-37
-2#~4
!W
ater
;H 2
O;
@773
2-18
-5#
J.H
ala,
Dep
artm
ent
ofIn
orga
nic
Che
mis
try,
Mas
aryk
Uni
vers
ity,
611
37B
rno,
Cze
chR
epub
lic,
May
2000
Crit
ical
Eva
luat
ion:
The
solu
bilit
yof
Am
2~C
2O4!
3in
oxal
icac
id/H
NO 3
solu
tions
has
been
stud
ied
intw
ore
fere
nces
.Z
akol
upin
and
Kor
ablin
1re
port
ednu
mer
ical
data
for
the
solu
bilit
yof
Am 2~
C2O
4!3
asa
func
tion
ofox
alic
acid
conc
entr
atio
nat
vario
usco
ncen
trat
ions
ofH
NO
3an
dte
mpe
ratu
res
whi
leB
urne
yan
dP
orte
r2
repo
rted
thei
rda
taat
one
tem
pera
ture~296
.1K!
ingr
aphi
cal
form
only
~see
the
resp
ectiv
eco
mpi
latio
ns!.
Bec
ause
ofth
is,
apr
ecis
eco
mpa
rison
betw
een
the
two
sets
ofda
tais
not
poss
ible
.H
owev
er,
anap
prox
imat
ere
ad-o
utth
eso
lubi
lity
data
for
0.05
and
0.1
mol
dm23
HN
O3
from
the
grap
hin
Bur
ney
and
Por
ter
2re
veal
sth
atth
ese
data
fall
reas
onab
lyw
ell
betw
een
thos
ein
Ref
.1
obta
ined
at28
7.1
and
303.
1K
.F
orth
isre
ason
the
data
ofZ
akol
upin
and
Kor
ablin
1ca
nbe
reco
mm
ende
das
tent
ativ
eva
lues
for
Am 2~
C2O
4!3
solu
bilit
yin
oxal
icac
id/H
NO 3
solu
tions
.
Ref
eren
ces:
1 S.
A.
Zak
olup
inan
dE
.V
.K
orab
lin,
Rad
iokh
imiy
a19,
698
~197
7!.
2 G.
A.
Bur
ney
and
J.A
.P
orte
r,In
org.
Nuc
l.C
hem
.Le
tt3,
79~1
967!
.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 Te
J
241 A
mis
otop
e.E
xces
sof
fres
hly
prec
ipita
ted
Am
~III
!ox
alat
ew
aseq
uilib
rate
dw
ithso
lutio
nsof
requ
ired
com
posi
tion
with
blad
em
ixer
ina
ther
mos
tat
for
1h.
Exp
erim
ents
esta
blis
hed
30m
inas
the
equi
libriu
mtim
e.A
fter
20m
inst
andi
ng,
asa
mpl
eof
the
satu
rate
dso
lutio
nw
asco
llect
ed,
cent
rifug
ed,
and
amer
iciu
mco
ncen
trat
ion
was
dete
rmin
edbygco
untin
g.D
etai
lsof
gco
untin
gan
dpH
dete
rmin
atio
nno
tsp
ecifi
ed.
Est
imat
edE
rror
:T
empe
ratu
re:6
1K
~aut
hors!
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 T.
J.M
arki
n,J.
Inor
g.N
ucl.
Che
m.7,
290
~195
8!.
2 I.A
.Le
bede
v,S
.V
.P
irozh
kov,
V.
M.
Raz
bitn
oi,
and
G.
N.
Yak
ovle
v,R
adio
khim
iya2
,35
1~1
960!
.3 C
.E.C
rout
ham
elan
dD
.S.M
artin
,J.A
m.C
hem
.Soc
.72
,138
2~1
950!
.4 C
.E
.C
rout
ham
elan
dD
.S
.M
artin
,J.
Am
.C
hem
.S
oc.
73,
569
~195
1!.
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4!
3;@6
5113
-20-
4#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Nitr
icac
id;
HN
O3;
@769
7-37
-2#W
ater
;H 2
O;
@773
2-18
-5#
G.A
.Bur
ney
and
J.A
.Por
ter,
Inor
g.N
ucl.
Che
m.L
ett.
3,79
–85
~196
7!.
riabl
es:
Pre
pare
dby
:
K:
296
/mol
dm2
3 :0.
02–
0.5
/mol
dm2
3 :0.
1–
4.0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at23
°Cof
Am 2
~C2O
4!3
inH
NO
3–
C2H
2O4
solu
tions
eso
lubi
lity
ofA
m2~
C2O
4!3
at23
°Cin
HN
O 3–
C2H
2O4
solu
tions
wer
epr
esen
ted
ingr
aphi
cal
form~s
eeF
ig.
24!.
The
natu
reof
the
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
Bas
edon
the
wor
kof
Mar
kin
1th
eau
thor
sas
sum
edth
eeq
uilib
rium
solid
phas
ebe
the
ptah
ydra
te,
Am 2~
C2O
4!3•
7H2O
,@
#.
FIG
.24
.D
iam
eric
ium
~III
!–tr
is~o
xala
te!–
oxal
icac
id–
nitr
icac
id–
wat
ersy
stem
.
682682 JIRI HALA
0.05
2.49
310
25
5.37
310
25
9.56
310
25
2.06
310
24
6.70
310
24
1.46
310
23
0.1
1.04
310
25
1.85
310
25
3.36
310
25
7.95
310
25
2.40
310
24
4.81
310
24
0.2
4.15
310
26
7.10
310
26
1.68
310
25
3.73
310
25
8.22
310
25
1.81
310
24
0.3
4.77
310
26
7.57
310
26
1.81
310
25
3.83
310
25
6.91
310
25
1.57
310
24
0.4
1.44
310
25
1.43
310
25
2.93
310
25
4.88
310
25
7.16
310
25
1.44
310
24
600.
011.
623
102
43.
403
102
49.
963
102
42.
603
102
35.
713
102
3—
0.05
5.19
310
25
1.14
310
24
1.59
310
24
3.10
310
24
1.39
310
23
—
HN
O3
(c3
/mol
dm2
3 )C
2H2O
4
(c2
/mol
dm2
3 )A
mb
~mol
dm2
3 !
Ioni
cst
reng
th~m
oldm
23 !
aox
c
~mol
dm2
3 !a
H1
d
~mol
dm2
3 !g
3e
Ksp0
~mol
5dm
215
!
Sol
ubili
typr
oduc
tof
Am 2
~C2O
4!3
at14
°Cca
lcul
ated
byth
eau
thor
s:
00.
056.
7310
27
0.15
8.84
310
26
0.10
0.09
93.
0310
230
0.1
0.00
085
5.73
102
40.
104
1.52
310
27
0.10
0.12
31.
76310
229
0.1
0.01
2.74
310
26
0.13
1.32
310
26
0.12
0.10
72.
0310
231
0.1
0.05
2.07
310
26
0.25
2.75
310
26
0.20
0.07
4.33
102
31
0.1
0.10
1.57
310
26
0.4
2.66
310
26
0.3
0.05
31.
36310
231
0.3
0.00
175
1.173
102
30.
304.
7310
28
0.3
0.06
15.
35310
231
a The
natu
reof
the
equi
libriu
mso
lidph
ases
was
not
inve
stig
ated
.B
ased
onth
eau
thor
s’an
alys
isof
Am
~III
!ox
alat
eob
tain
edin
0.5
mol
dm2
3H
NO
3at
<30
°Cth
eco
mpi
ler
assu
mes
the
solid
phas
ew
asA
m2~
C2O
4!3•
9H2O
,@
#.M
arki
n1re
port
edth
eex
iste
nce
ofA
m2~
C2O
4!3•
7H2O
.b C
once
ntra
tion
ofA
m~III
!in
the
satu
rate
dso
lutio
ns.
c Act
ivity
ofth
eC
2O422
ion
calc
ulat
edac
cord
ing
toR
ef.
2asa
ox5
Ka1
Ka2
c ox
/ $a
H21
Ka1
aH
/g11
Ka1
Ka2
/g2%.
Her
ec o
xis
the
tota
lco
ncen
trat
ion
ofox
alat
ein
solu
tion,a
His
the
activ
ityof
H1io
n,K
a1an
dK
a2ar
eth
edi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
,K
a15
5.37
310
22
mol
dm2
3an
dK
a25
5.63
102
5m
oldm
23 ,
both
at14
°C,
andg
1an
dg
2ar
eth
eac
tivity
coef
ficie
nts
ofth
eH
C 2O422
and
C 2O
422
ions
,re
spec
tivel
y,ta
ken
from
Ref
s.3,
4.d A
ctiv
ityof
H1
ions
.e A
ctiv
ityof
the
Am
31io
n.S
ourc
eno
tre
port
ed.
f Obt
aine
das
Kspo
5g
32@A
m31
#2a
ox3.
The
auth
ors
expl
aine
dth
esc
atte
rofKspo
valu
esas
bein
gdu
eto
varia
tions
inio
nic
stre
ngth
.
Add
ition
alin
form
atio
n:A
tH
NO
3co
ncen
trat
ions
of0.
1an
d0.
3m
oldm2
3 ,th
eso
lubi
lity
ofA
m~I
II!
oxal
ate
asa
func
tion
ofox
alic
acid
conc
entr
atio
nsh
owed
am
inim
um.
With
refe
renc
eto
Ref
.2,
the
auth
ors
ascr
ibed
this
toth
efo
rmat
ion
ofA
m~I
II!
oxal
atoc
ompl
exes
,th
epr
edom
inat
ing
spec
ies
bein
gA
m31
atlo
wox
alat
eco
ncen
trat
ions
,A
m~C2O
4!1
and
Am
~C2O
4!22
inth
era
nge
ofth
em
inim
um,
and
Am~C
2O4!
332at
high
oxal
ate
conc
entr
atio
ns.
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
The
wor
kw
asco
nduc
ted
with
the
Not
hing
spec
ified
.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 Th
eq he
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dia
mer
iciu
m~III
!tr
is~o
xala
te!;
Am
2~C
2O4!
3;@6
5113
-20-
4#O
xalic
acid
;C 2
H2O
4;@1
44-6
2-7#
Pot
assi
umox
alat
e;C 2O
4K2;
@583
-52-
8#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
E.
M.
Paz
ukhi
n,A
.S
,K
rivok
hats
kii,
and
S.
M.
Koc
herg
in,
Rad
iokh
imiy
a29,
11–
16~1
987!
.
riabl
es:
Pre
pare
dby
:
K:
298
uilib
rium
conc
entr
atio
nof
the
C 2O422
ion/
mol
dm2
3 :1.
710
26–
0.3
J.H
ala
Exp
erim
enta
lDat
a
Sol
ubili
tyat
25°C
ofA
m 2~C
2O4!
3in
C2H
2O4–
C2O
4K2
orC
2H2O
4–
HN
O3
solu
tions
a
talo
xala
teol
dm2
3 !Io
nic
stre
ngthe
~mol
dm2
3 !g
6e
aH
1
@H1
#~m
oldm
23 !
@C2O
422#f
(102
mol
dm2
3 )2
log
CA
m
~mol
dm2
3 !
1.50
b15
02.
80
1.00
b10
03.
07
0.60
b60
3.37
0.30
c0.
901.
045.
62310
29
5.41
310
29
303.
84
0.15
c0.
450.
875.
62310
29
6.49
310
29
154.
44
0.10
b10
4.57
0.07
0c0.
210.
826.
31310
29
7.72
310
29
74.
80
0.03
0c0.
090.
836.
17310
29
7.48
310
29
35.
36
0.02
0c0.
060.
843.
16310
29
3.77
310
29
25.
47
0.01
0c0.
030.
874.
47310
29
5.16
310
29
15.
67
0.00
8c0.
020.
888.
91310
29
1.01
310
28
0.80
5.81
0.00
5c0.
020.
885.
50310
29
6.24
310
29
0.50
5.88
0.30
d0.
270.
827.
76310
23
9.42
310
23
0.84
5.81
0.03
0d0.
040.
851.
78310
24
2.08
310
24
1.42
5.84
0.01
0d0.
010.
913.
98310
23
4.36
310
23
3.90
310
22
5.89
0.01
0d0.
010.
911.
07310
22
1.18
310
22
1.40
310
22
5.90
0.01
0d0.
010.
911.
82310
22
2.00
310
22
7.60
310
23
5.88
0.01
0d0.
006
0.92
3.803
102
24.
143
102
22.
803
102
35.
73
0.00
5d0.
003
0.94
3.803
102
24.
033
102
21.
603
102
35.
25
0.00
5d0.
002
0.95
5.503
102
25.
773
102
29.
903
102
44.
73
0.00
5d0.
002
0.95
1.073
102
11.
123
102
13.
703
102
44.
29
0.00
5d0.
0001
0.97
1.783
102
11.
843
102
11.
703
102
43.
72
a Equ
ilibr
ium
solid
phas
esw
ere
not
inve
stig
ated
.b C
once
ntra
tion
adju
sted
bym
eans
ofC
2O4K
2.c C
once
ntra
tion
adju
sted
bym
eans
ofC
2O4H
2ne
utra
lized
byC
O 2-fr
eeN
H 3ga
s.d C
once
ntra
tion
adju
sted
bym
eans
ofC
2O4H
2an
dH
NO 3
.e S
eeA
dditi
onal
Info
rmat
ion.
f Obt
aine
das
seco
ndap
prox
imat
ion.
Add
ition
alin
form
atio
n:A
sth
efir
stap
prox
imat
ion,
equi
libriu
mco
ncen
trat
ions
ofC
2O422
and
HC 2
O42
ions
wer
eca
lcul
ated
usin
gth
edi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
take
nfr
omLu
rye,1
and
the
mea
sure
dpH
valu
e.F
rom
the
conc
entr
atio
nsso
obta
ined
,io
nic
stre
ngth
was
calc
ulat
edan
dus
edto
calc
ulat
eac
tivity
coef
ficie
nts
and
conc
entr
atio
nof
the
H1
ion.
Fro
mth
ese
valu
es,
and
usin
gdi
ssoc
iatio
nco
nsta
nts
ofox
alic
acid
ofK
a15
1.05
310
21
and
Ka2
51.
883
102
4fo
rio
nic
stre
ngth
of0.
1m
oldm
23 ,
the
equi
libriu
mco
ncen
trat
ion
ofth
eC
2O422
ion
was
then
obta
ined
asth
ese
cond
appr
oxim
atio
n.W
ithin
crea
sing
oxal
ate
ion
conc
entr
atio
n,th
eso
lubi
lity
ofA
m~I
II!
oxal
ate
first
decr
ease
d,th
enpa
ssed
thro
ugh
am
inim
um,
and
incr
ease
dat
high
erox
alat
eco
ncen
trat
ions
beca
use
ofth
efo
rmat
ion
ofox
alat
oco
mpl
exes
ofA
m~I
II!.
Ove
rall
stab
ility
cons
tant
sof
the
Am
~C2O
4!n3
22
nco
mpl
exes
,bn5
@Am
~C2O
4)n3
22
n]3
@Am
31#2
1@C
2O422
#2n,
wer
eob
tain
edgr
aphi
cally
for
zero
ioni
cst
reng
thasb
1
54.
8310
6m
ol2
1dm
3 ,b
25
8.73
109
mol
22
dm6 ,
and
b35
4.15
310
11m
ol2
3dm
9 .T
hefit
with
expe
rimen
tald
ata
was
furt
her
impr
oved
whe
nal
soth
eco
mpl
exA
m~HC
2O4!
21,
b1
h5
4.37
310
4m
ol2
1dm
3w
asco
nsid
ered
.
683683IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
An
aliq
uot
ofA
m~III
!st
ock
solu
tion,
enou
ghto
ensu
reex
cess
ofA
m2~
C2O
4!3•
7H2O
ateq
uilib
rium
,w
asad
ded
toso
lutio
nsof
the
desi
red
com
posi
tion,
ina
poly
ethy
lene
bottl
e.T
hebo
ttle
was
mec
hani
cally
shak
enun
tileq
uilib
rium
was
achi
eved
,w
hich
took
less
than
16h.
The
nal
iquo
tsof
the
solu
tions
wer
ew
ithdr
awn,
filte
red,
and
conc
entr
atio
nof
amer
iciu
mde
term
ined
byasp
ectr
omet
ry.
The
conc
entr
atio
nsof
acid
and
oxal
ate
wer
ede
term
ined
bytit
ratio
nw
ithst
anda
rdN
aOH
and
KM
nO 4so
lutio
ns,
resp
ectiv
ely.
Dep
letio
nof
oxal
ate
orH
1io
nsby
radi
olys
isdi
dno
toc
cur
for24
3 Am
.A
fter
the
first
4–
12h
inso
me
3da
yeq
uilib
ratio
ns,
ther
ew
ere
node
tect
able
varia
tions
inso
lutio
nco
mpo
sitio
nor
chan
ges
inso
lubi
lity.
Sto
ckso
lutio
nof
Am~
III!
nitr
ate
was
prep
ared
bypr
ior
sepa
ratio
nfr
omne
utro
nirr
adia
ted23
9 Pu,
lant
hani
des,
and
curiu
mw
ithtr
ibut
ylph
osph
ate/
tert
iary
amin
eex
trac
tion,
and
K2C
O3
prec
ipita
tion.
The
K 3Am
~CO
3!2
was
diss
olve
d,A
m~III
!re
prec
ipita
ted
asox
alat
e,ca
lcin
ed,
diss
olve
din
HC
l,pu
rified
byan
ion
exch
ange
,an
dpr
ecip
itate
dw
ithN
H3
solu
tion.
The
amer
iciu
mhy
drox
ide
was
diss
olve
din
HN
O3.
The
amer
iciu
mw
aspu
re24
3 Am
cont
aini
ng,
2000
ppm
curiu
man
d,10
00pp
mof
othe
rca
tioni
cim
purit
ies.
The
amer
iciu
mw
assh
own
tobe
triv
alen
tby
spec
trop
hoto
met
rican
alys
is.
All
othe
rch
emic
als
wer
ere
agen
tgr
ade
prod
ucts
.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Ref
eren
ces:
1 T.
L.M
arki
n,J.
Inor
g.N
ucl.
Che
m.7,
290
~195
8!.
Co
~1!
~2!
~3!
~4!
~5!
Va
T/
eq 3 To ~m
J
9.T
heS
olub
ility
ofC
uriu
mC
ompo
unds
9.1.
Cur
ium
„III…
Oxa
late
mpo
nent
s:O
rigin
alM
easu
rem
ents
:
Dic
uriu
m~I
II!
tris
~oxa
late!
;C
m2~
C2O
4!3;
@#
Oxa
licac
id;
C 2H
2O4;
@144
-62-
7#N
itric
acid
;H
NO
3;@7
697-
37-2#
Wat
er;
H 2O
;@7
732-
18-5#
G.A
.Bur
ney
and
J.A
.Por
ter,
Inor
g.N
ucl.
Che
m.L
ett.
3,79
–85
~196
7!.
riabl
es:
Pre
pare
dby
:
K:
296
/mol
dm2
3 :0.
025
–0.
5/m
oldm
23 :
0.1
–4.
0
J.H
ala
Exp
erim
enta
lDat
aS
olub
ility
at23
°Cof
Cm 2
~C2O
4!3
inH
NO
3–
C2H
2O4
solu
tions
eso
lubi
lity
ofC
m 2~C
2O4!
3at
23°C
inH
NO 3
–C
2H2O
4so
lutio
nsw
aspr
esen
ted
ingr
aphi
cal
form~s
eeF
ig.
25!.
The
natu
reof
the
uilib
rium
solid
phas
esw
asno
tin
vest
igat
ed.
Rad
ioly
ticde
com
posi
tion
ofox
alat
eby
ara
diat
ion
from
244 C
maf
fect
edth
eac
cura
cyof
lubi
lity
dete
rmin
atio
n.T
hera
teof
radi
olyt
icde
plet
ion
ofox
alat
ew
asre
lativ
ely
rapi
dat
solu
bilit
ies
.50
0m
g24
4 Cm
/dm
3an
dat
,0.
5ld
m2
3ox
alat
eco
ncen
trat
ion.
The
data
obta
ined
inth
ese
regi
ons
wer
eco
nsid
ered
byth
eau
thor
sas
appr
oxim
ate.
FIG
.25
.D
icur
ium
~III
!–tr
is~o
xala
te!–
oxal
icac
id–
nitr
icac
id–
wat
ersy
stem
.
684684 JIRI HALA
Aux
iliar
yIn
form
atio
n
Met
hodÕ
App
arat
usÕP
roce
dure
:S
ourc
ean
dP
urity
ofM
ater
ials
:
Isot
herm
alm
etho
dus
ed.
Exc
ess
Am
~III
!ox
alat
ew
aseq
uilib
rate
dfo
r6
–10
hw
ithso
lutio
nsof
oxal
icac
idan
dpo
tass
ium
oxal
ate
cont
aini
ngva
rious
conc
entr
atio
nsof
oxal
ate
ions
.S
ampl
esw
ere
take
npe
riodi
cally
from
each
solu
tion
toch
eck
ifeq
uilib
rium
had
been
atta
ined
.In
the
satu
rate
dso
lutio
nspH
was
mea
sure
d,an
dA
m~I
II!
was
dete
rmin
edby
anun
spec
ified
radi
omet
ricm
etho
d.
Am
2~C
2O4!
3•7H
2Ow
aspr
epar
edin
the
follo
win
gw
ay.
Aso
lutio
nof
241 A
mO
2in
7m
oldm
23 H
NO
3w
aspr
ecip
itate
dw
ith;
12m
oldm
23 N
H3
solu
tion,
and
the
Am~O
H! 3
was
diss
olve
din
4m
oldm
23
K2C
O3.
The
solu
tion
was
filte
red
and
the
carb
onat
oco
mpl
exde
com
pose
dw
ith4
mol
dm23
HN
O3.
The
CO 2
was
rem
oved
from
the
resu
lting
solu
tion
byhe
atin
gat
95°C
for
1.5
h.T
heni
trat
eso
lutio
nof
Am~I
II!
was
purifi
edby
extr
actio
nw
ithdi
-~2-
ethy
lhex
yl!ph
osph
oric
acid
,an
daf
ter
strip
ping
into
HN
O3
solu
tion,
itw
aspo
ured
into
aso
lutio
nof
oxal
icac
idne
utra
lized
with
amm
onia
topH
2.T
heA
m~III
!ox
alat
ew
asw
ashe
dse
vera
ltim
esw
ith0.
1m
oldm
23
C2H
2O4/
0.1
mol
dm2
3H
NO
3so
lutio
n,an
dke
ptun
der
dist
illed
wat
er.
Tw
ice
recr
ysta
llize
dox
alic
acid
and
pota
ssiu
mox
alat
ew
ere
used
.2
Est
imat
edE
rror
:T
empe
ratu
re:6
0.02
K~a
utho
rs!.
Sol
ubili
ty:
insu
ffici
ent
data
give
nto
allo
wfo
rer
ror
estim
ate.
Ref
eren
ces:
1 Yu.
Yu.
Lury
e,H
an
db
oo
ko
fA
na
lytic
alC
he
mis
try~in
Rus
sian
!~K
him
iya,
Mos
cow
,19
71!,
p.95
.2 A
.V.S
tepa
nov
and
E.M
.Paz
ukhi
n,Z
h.N
eorg
.Khi
m.
15,1
483
~197
0!.
Co
~1!
~2!
~3!
~4!
Va
T/
c 2 c 3 Th
eq so mo
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
Aux
iliar
yIn
form
atio
n
etho
dÕA
ppar
atus
ÕPro
cedu
re:
Sou
rce
and
Pur
ityof
Mat
eria
ls:
othe
rmal
met
hod
used
.A
nal
iquo
tof
Cm
~III
!st
ock
solu
tion,
ough
toen
sure
exce
ssof
solid
Cm
~III
!ox
alat
eat
uilib
rium
,w
asad
ded
toso
lutio
nsof
the
desi
red
mpo
sitio
n,in
apo
lyet
hyle
nebo
ttle.
The
bottl
ew
asec
hani
cally
shak
enun
tileq
uilib
rium
was
achi
eved
,w
hich
okle
ssth
an16
h.T
hen
aliq
uots
ofth
eso
lutio
nsw
ere
ithdr
awn,
filte
red,
and
conc
entr
atio
nof
curiu
mw
aste
rmin
edby
asp
ectr
omet
ry.
The
conc
entr
atio
nsof
acid
and
alat
ew
ere
dete
rmin
edby
titra
tion
with
stan
dard
NaO
Han
dnO
4so
lutio
ns,
resp
ectiv
ely.
Cur
ium
was
sepa
rate
dfr
omne
utro
nirr
adia
ted
239 P
uin
the
follo
win
gw
ay.
Plu
toni
umw
asex
trac
ted
bytr
ibut
ylph
osph
ate,
then
curiu
man
dam
eric
ium
wer
ese
para
ted
from
fissi
onpr
oduc
tla
ntha
nide
sw
itham
ine
extr
actio
n.A
mer
iciu
mw
asse
para
ted
from
curiu
mby
prec
ipita
tion
ofK 3A
m~C
O3!
2,an
dcu
rium
was
final
lypr
ecip
itate
das
oxal
ate
and
calc
ined
toth
eox
ide.
The
latte
rw
asdi
ssol
ved
inH
Cl,
curiu
mw
aspu
rified
byan
ion
exch
ange
,pr
ecip
itate
dw
ithN
H 3so
lutio
n,an
ddi
ssol
ved
inH
Cl.
Pur
ified
curiu
mw
asap
prox
imat
ely
95%24
4 Cm
,an
dco
ntai
ned
,20
00pp
mam
eric
ium
,as
dete
rmin
edby g
spec
tros
copy
.A
llot
her
chem
ical
sw
ere
reag
ent
grad
epr
oduc
ts.
Est
imat
edE
rror
:T
empe
ratu
re:
prec
isio
nno
tre
port
ed.
Sol
ubili
ty:
;3%
for
solu
bilit
y,
10m
g24
4 Cm
/dm
3;
;5%
for
solu
bilit
y,;
50m
g24
4 Cm
/dm
3an
d,
0.1
mol
dm2
3ox
alat
e,du
eto
radi
olys
isef
fect
s~aut
hors!
.
685685IUPAC-NIST SOLUBILITY DATA SERIES
. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
M Is en eq co m to w de ox KM
J
he symbol
5
7
6
34
10. System Index
Page numbers preceded by E refer to evaluation texts whereas those not preceded by E refer to compiled tables. T~aq! stands for water as an additional component in the respective system.
Actinium oxalate1water 539Actinium oxalate~aq!
1nitric acid 5401nitric acid1oxalic acid 5401oxalic acid 539
Americium~III ! carbonate~aq!1carbon dioxide1sodium perchlorate 674, 671carbonate ion1sodium chloride 6771carbonate ion1sodium perchlorate E6731potassium carbonate 673
Americium~III ! formate~aq!1formic acid1perchloric acid1sodium perchlorate 678
Americium~III ! hydroxocarbonate~aq!1carbon dioxide1sodium hydrogencarboante 676-671carbon dioxide1sodium perchlorate 6751carbonate ion1sodium perchlorate E6731sodium carbonate1sodium hydroxide 676–6771sodium hydrogencarbonate1sodium perchlorate 675–67
Americium~III ! oxalate~aq!1oxalic acid1nitric acid E681, 681–682, 682–681oxalic acid1nitric acid1potassium oxalate 683–681perchloric acid 6791potassium oxalate 6791potassium oxalate1perchloric acid 680
Ammonium carbonato dioxoneptunate~V! ~aq!1ammonium carbonate 644
Ammonium hydroxy~carbonato! dioxoplutonate~VI ! ~aq!1ammonium carbonate 654
Ammonium tetra~oxalato!thorate~aq! 1 ammonium oxalate 569Ammonium tris~carbonato! dioxoneptunate~V! ~aq!
1ammonium carbonate 644Ammonium tris~carbonato! dioxoplutonate~VI ! ~aq!
1ammonium carbonate 652, 6531ammonium nitrate 653
Ammonium tris~carbonato! dioxouranate~VI !1water 585Ammonium tris~carbonato! dioxouranate~VI ! ~aq!
1sodium tris~carbonato!dioxouranate~VI ! 585Ammonium tris~hydroxybenzoato! dioxouranate~VI ! ~aq!
1ammonium hydroxybenzoate 625–626Calcium tris~carbonato!dioxouranate~VI !1water 586Cesium tris~carbonato!dioxouranate~VI !1water 582Cesium tris~carbonato!dioxoneptunate~V! ~aq!
1cesium carbonate 643Curium~III ! oxalate~aq!
1oxalic acid1nitric acid 684–685Guanidinium pentakis~carbonato!thorate~aq!
1guanidinium carbonate1guanidinium nitrate 5441guanidinium hydrogencarbonate1guanidinium nitrate 544
Guanidinium trifluorotris~carbonato!thorate~aq!1guanidinium carbonate1guanidiunium fluoride 544
Hexamminecobalt~III ! pentakis~carbonato! aquaneptunate~IV !1water 645Hexamminecobalt~III ! bis~carbonato! dioxoneptunate~V!1water 645Hexamminecobalt~III !nitrate tris~carbonato! dioxoneptunate~VI !1water 645Hexamminecobalt~III ! pentakis~carbonato!aqua plutonate~IV !
0047-2689Õ2001Õ30„2…Õ686Õ168Õ$35.00 J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001686
1
1
2
2
2
2
2
0
687687IUPAC-NIST SOLUBILITY DATA SERIES
1ethanol 6541water 654
Hexamminecobalt~III ! penta~carbonato!thorate1acetone 5451water 545
Magnesium tricarbonatodioxouranate~VI !1water 586Neptunium~VI ! dioxo~carbonate! ~aq!
1carbon dioxide1sodium perchlorate 630–63Neptunium~VI ! dioxo~oxalate! ~aq!
1oxalic acid1nitric acid 647Neptunium~IV ! oxalate~aq!
1hydrogen chloride 6461oxalic acid 6451oxalic acid1nitric acid 646–647
Plutonium~VI ! dioxocarbonate~aq!1carbon dioxide1sodium chloride 6521carbon dioxide1sodium perchlorate E648, 650, 651carbon dioxide1sodium hydrogencarbonate1sodium perchlorate 6491lithium hydrogen carbonate 648
Plutonium~VI ! dioxo~oxalate! ~aq!1ammonium oxalate1nitric acid 667–6681oxalic acid1nitric acid 666–667
Plutonium~VI ! formate~aq!1formic acid1hydroxylamine hydrochloride 6551formic acid1perchloric acid1sodium perchlorate 6561formic acid1sodium formate1hydroxylamine hydrochloride 655
Plutonium~IV ! 5-chloro-8-hydroxyquinolinate~aq!1ammonium perchlorate1sodium acetate 671–67
Plutonium~IV ! 5-chloro-7-iodo-8-hydroxyquinolinate~aq!1ammonium perchlorate1sodium acetate 671–67
Plutonium~IV ! 5,7-dibromo-8-hydroxyquinolinate~aq!1ammonium perchlorate1sodium acetate 671–67
Plutonium~IV ! 5,7-dichloro-8-hydroxyquinolinate~aq!1ammonium perchlorate1sodium acetate 671–67
Plutonium~IV ! 8-hydroxyquinolinate~aq!1ammonium perchlorate1sodium acetate 671–67
Plutonium~IV ! N-nitroso-N-benzeneaminate~aq!1N-nitroso-N-benzeneamine1sulfuric acid 672
Plutonium~III ! oxalate~aq!1ammonium oxalate 6561oxalic acid1hydrogen chloride1ascorbic acid 6601oxalic acid1nitric acid1ascorbic acid E657, 658, 659–661oxalic acid1nitric acid1hydrazine E657, 6591potassium oxalate1potassium chloride 657
Plutonium~IV ! oxalate1water E661Plutonium~IV ! oxalate~aq!
1ammonium oxalate 6641ammonium oxalate1nitric acid 6661nitric acid E662, 663, 6631oxalic acid1nitric acid 665, 6651perchloric acid 6611sulfuric acid 664
Plutonium oxobis~o-hydroxybenzoate! ~aq!1hydrogen chloride 669
Plutonium~III ! tris~o-hydroxybenzoate!1ethanol 6681water 668
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
8
6
5
688688 JIRI HALA
Plutonium~IV ! trioxo~o-hydroxybenzoate! ~aq!1ammonia 6691ammonium chloride 6701ammonium nitrate 6701ammoniumo-hydroxybenzoate 6691hydrogen chloride 669
Potassium bis~carbonato! dioxoneptunate~V! ~aq!1potassium carbonate 642
Potassium carbonato dioxoneptunate~V! ~aq!1potassium carbonate 640, 640–641
1potassium carbonate1sodium carbonate1potassium chloride1sodium chloride 641–642Potassium tris~carbonato! dioxoneptunate~aq!
1potassium carbonate 643Potassium tris~carbonato!dioxouranate~VI !1water 582Rubidium carbonato dioxoamericiate~V! ~aq!
1rubidium carbonate 678Rubidium tricarbonatodioxouranate~VI !1water 582Sodium bis~carbonato! dioxoneptunate~V! ~aq!
1carbon dioxide1sodium chloride 637–6381carbon dioxide1sodium perchlorate 635, 637–631sodium carbonate1sodium chloride1potassium chloride 6391sodium carbonate1sodium nitrate 6391sodium carbonate1sodium perchlorate 635
Sodium carbonato dioxoamericiate~V! ~aq!1carbonate ion1sodium chloride 677
Sodium carbonato dioxoneptunate~V! ~aq!1carbon dioxide1sodium chloride 637–638, 6381carbon dioxide1sodium perchlorate E631–E632, 631carbon dioxide1sodium hydrogencarbonate1sodium perchlorate 6341sodium carbonate 6321sodium carbonate1sodium perchlorate 633, 63
Sodium dicarbonatodioxouranate~VI !1water 581Sodium pentacarbonato bis~dioxouranate~VI !!1water 587Sodium pentakis~carbonato!thorate~aq!
1sodium carbonate E542, 543, 5431sodium hydrogencarbonate 543
Sodium tris~acetato! dioxouranate~VI ! ~aq!1acetic acid1sodium acetate 591, 5921acetic acid1sodium acetate1ammonium acetate 5921acetic acid1sodium acetate1ammonium nitrate 5921acetic acid1sodium acetate1sodium nitrate 5921acetic acid1sodium acetate1sodium perchlorate 592
Sodium tris~carbonato!dioxouranate~VI !1water 582Sodium tris~carbonato!dioxouranate~VI ! ~aq!
1ammonium tris~carbonato!dioxouranate 5851sodium carbonate 5821sodium carbonate1sodium chloride 5841sodium chloride 5831sodium perchlorate 5841sodium sulfate 583
Sodium zinc tris~dioxouranium~VI !!nonakis~acetate! ~aq!1ethanol 593Strontium tris~carbonato!dioxouranate~VI !1water 587Thorium acetate
12-Aminoethanol 54711,2-Ethanediamine 54711,2-Ethanediol 5471water 546
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
61
6
0
2
689689IUPAC-NIST SOLUBILITY DATA SERIES
Thorium carbonate~aq!1thorium oxalate1sodium carbonate1sodium oxalate 578Thorium decanoate~aq!1potassium nitrate 547Thorium dodecanoate~aq!1potassium nitrate 547Thorium formate~aq!1formic acid 545Thorium formate trihydrate
1acetone 5461benzene 5461carbon tetrachloride 5461ethanol 5461methanol 5461oxirane~ethylene oxide! 54612-propanol 5461trichloroethylene 546
Thorium hexadecanoate~aq!1potassium nitrate 547Thorium hydroxyquinolinate~aq!1hydrogen chloride1sodium chloride 571Thorium 5-nitro-barbiturate1water 570Thorium O-butylcarbonodithioate~aq!1potassium nitrate 548Thorium O-decylcarbonodithioate~aq!1potassium nitrate 548Thorium O-ethylcarbonodithioate~aq!1potassium nitrate 548Thorium O-hexylcarbonodithioate~aq!1potassium nitrate 548Thorium oxalate1water E548, 549, 562Thorium oxalate~aq!
1ammonium chloride 5621ammonium oxalate E557, 558, 559, 559–51 ammonium perchlorate1perchloric acid 5631ammonium sulfate 5621hydrogen chloride 550, 550, 5511 hydrogen chloride1oxalic acid 5631hydrogen chloride1sodium chloride 5621nitric acid E551, 552, 552–5531nitric acid1oxalic acid E564, 564, 565, 565–566, 561oxalic acid 5551oxalic acid1perchloric acid 5671potassium hydrogen sulfate 5621potassium oxalate 556, 5571sodium chloride 5621sodium oxalate 5561sodium sulfate 5621sulfuric acid E553, 5541thorium carbonate1sodium carbonate1sodium oxalate 578
Thorium oxalate dihydrate1ammonia 549Thorium oxobis~hydroxybenzoate! ~aq!1ammonium hydroxybenzoate 569–57Thorium oxocarbonate~aq!
1sodium perchlorate 5411sodium carbonate1sodium perchlorate 541–54
Thorium pentadecanoate~aq!1potassium nitrate 547Thorium phthalocyaninate
1benzene 57111-chloronaphthalene 571
Thorium tetradecanoate~aq!1potassium nitrate 547Thorium tridecanoate~aq!1potassium nitrate 547Thorium undecanoate~aq!1potassium nitrate 547Uranium~VI ! dioxocarbonate~aq!
1carbon dioxide 573, 5741sodium carbonate 581
Uranium~VI ! dioxo~acetate!1water 588, 589Uranium~VI ! dioxo~acetate! ~aq!
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
580
690690 JIRI HALA
1acetic acid 5891phosphoric acid tri-n-butylester 590
Uranium~VI ! dioxo~acetate! dihydrate1phosphoric acid di-n-butyl ester 5911phosphoric acid tri-n-butyl ester 5911phthalic acid di-n-butyl ester 5911phthalic acid di-n-octylester 591
Uranium~VI ! dioxo~benzenesulfonate! ~aq!1phosphoric acid tri-n-butyl ester 600–601
Uranium~VI ! dioxo~benzoate!1water 588Uranium~VI ! dioxo bis~8-hydroxyquinolinate!1trichloromethane 628Uranium~VI ! dioxo bis~8-hydroxyquinolinate!~8-hydroxyquinoline!
1dioxane 6261ethanol1trichloromethane 6281water 627
Uranium~VI ! dioxo bis~8-hydroxyquinolinate!~8-hydroxyquinoline! ~aq!1ammonium carbonate1ammonium chloride 627
Uranium~VI ! dioxo bis@4,4,4-trifluoro-1-~2-thienyl!-1,3- butanedionate#1benzene 6291chlorobenzene 6291cyclohexane 6291o-dichlorobenzene 6291dichloromethane 6391n-heptane 6291n-hexane 6291isopropylbenzene 6291toluene 6291tetrachloromethane 6291trichlorobenzene 6291trichloromethane 629
Uranium~VI ! dioxo~butyrate!1water 588Uranium~VI ! dioxocabonate~aq!
1carbon dioxide1sodium perchlorate E572, 575, 576, 577, 578, 578–579, 579–Uranium~VI ! dioxo~ethylenediaminetetraacetate!1water 629Uranium~VI ! dioxo~formate!1water 588Uranium~VI ! dioxo~formate! ~aq!1formic acid 588Uranium~VI ! dioxo~glycolate!1water 588Uranium~VI ! dioxo~hydroxybenzoate!1water 588Uranium~VI ! dioxo~iso-butyrate!1water 588Uranium~VI ! dioxo~lactate!1water 588Uranium~VI ! dioxo~monochloroacetate!~aq!
1diethyl ether 595–5961phosphoric acid tri-n-butylester 596–597
Uranium~VI ! dioxo~nitrate! ~aq!1uranium~VI ! dioxo~oxalate! 6231uranium~VI ! dioxo~oxalate!1oxalic acid1nitric acid 623–624
Uranium~VI ! dioxo~oxalate!1water E609, 610Uranium~VI ! dioxo~oxalate! ~aq!
1ammonium oxalate 617–6181ammonium oxalate1nitric acid 6221ammonium oxalate1perchloric acid 6221barium oxalate 6201calcium oxalate 6191hydrogen chloride 6141nitric acid E611, 611–612, 6131oxalic acid 615–6161oxalic acid1nitric acid 621
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
.
691691IUPAC-NIST SOLUBILITY DATA SERIES
1oxalic acid1perchloric acid 6211perchloric acid 6131phosphoric acid 6141potassium oxalate 618–6191sodium oxalate 616–6171strontium oxalate 6201sulfuric acid 6151uranium dioxo~nitrate! 6231uranium dioxo~nitrate!1oxalic acid1nitric acid 623–624
Uranium~VI ! dioxo~oxalate! N,N8-dimethylformamide monosolvate~aq!1N,N8-dimethylformamide1nitric acid1oxalic acid 6241N,N8-dimethylformamide1sodium perchlorate 625
Uranium~VI ! dioxo~propionate!1water 588Uranium~VI ! dioxo~tartrate!1water 588Uranium~VI ! dioxo~trichloroacetate! ~aq!
1diethyl ether 597–59814-methyl-2-pentanone 599–6001phosphoric acid tri-n-butylester 598–599
Uranium~VI ! dioxo~trifluoroacetate! ~aq!1diethyl ether 593–5941phosphoric acid tri-n-butylester 594–595
Uranium~VI ! dioxo~valerate!1water 588Uranium~IV ! oxalate1water E601, 602, 602–603Uranium~IV ! oxalate~aq!
1hydrogen chloride E603, 604, 6051hydrogen chloride1ammonium oxalate 6081hydrogen chloride1oxalic acid 6081oxalic acid 6071perchloric acid 6061sodium oxalate 6061sulfuric acid 605
Uranium~IV ! phthalocyaninate1benzene 63011-chloronaphthalene 630
11. Registry Number Index
Page numbers preceded by E refer to evaluation texts whereas those not preceded by E refer to compiled tables
50-81-7 E657, 658–66056-23-5 546, 62960-29-7 593–59662-76-0 556, 578, 606, 616–61764-17-5 546, 593, 628, 654, 66864-18-6 545, 588, 655–656, 678764-19-7 588, 591, 59267-56-1 54667-63-0 54667-64-1 546, 66867-66-3 628–62968-12-2 624–62571-43-2 546, 571, 629–63075-09-2 62979-01-6 54684-74-2 59190-13-1 571, 630
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
4–677
58–660,
–677
84
–668
4–5788
692692 JIRI HALA
95-21-8 54695-50-1 62998-82-8 629107-15-3 547107-21-1 547107-66-4 591108-10-1 599–600108-88-3 629108-90-7 629110-54-3 629110-82-7 629117-84-0 591123-91-1 626124-38-9 E572, 573–580, 630–631, E631–E632, 634, 636–638, E648, 649–652, 67124-46-9 544126-73-8 590–591, 594–601127-09-3 591–592, 671–672141-43-5 547141-53-7 655142-82-5 629144-55-8 543, 634, 649, 675–677144-62-7 539–540, 555, 563, E564, 564–567, 607–608, 615–616, 621, 623–624, 645–647, E657, 6
666–667, E681, 681–685148-97-0 672302-01-2 E657, 659497-19-8 541–542, E542, 543, 578, 582, 584, 632–633, 635, 639, 641–642, 676506-87-6 627, 644, 652, 654506-93-4 544506-97-3 648516-02-9 620534-17-8 643541-09-3 589–590562-99-2 545563-72-4 619583-52-8 556–557, 618–619, 657, 679–680, 683–6584-08-7 640–643, 673593-85-1 544, 581631-61-8 592814-95-9 6201113-38-8 E557, 558–561, 569, 608, 617–618, 622, 656, 664, 6661310-73-2 676–6772031-89-2 E609, 610, E611, 611–6242040-52-0 E548, 549–551, E551, 552–553, E553, 554–557, E557, 558–563, E564, 562847-15-6 E601, 602–603, E603, 604–603316-65-2 656–657, E657, 658–6603812-32-6 E673, 6775470-11-1 6555794-28-5 6196000-70-7 5606132-02-1 5786153-56-6 555, 615–616, 623–6246159-44-0 588–5916484-52-2 592, 653, 6706487-48-5 556, 618–6197264-35-9 539–5407447-40-7 639, 641–642, 657
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
51, 656,
680
, 669677
20, E662,
3, E564,–631,E673,
568
4
693693IUPAC-NIST SOLUBILITY DATA SERIES
7601-89-0 541–542, E572, 575–580, 584, 592, 625, 630–631, E631–E632, 633–638, E648, 649–6E673, 674–676, 678
7601-90-3 563, 567, 575, 606, 614, 621–622, 656, 661, 678–7631-99-4 592, 6397646-93-7 5627647-01-0 550–551, 562–563, 571, E603, 604–605, 608, 615, 6607647-14-5 562, 571, 583–584, 637–639, 641–642, 652,7647-15-5 5627664-38-2 6147664-41-7 549, 6697664-93-9 E553, 554, 605, 615, 664, 677697-37-2 540, E551, 552–553, E564, 565–566, E611, 611–613, 621–624, 646–647, E657, 658–66
663–668, E681, 681–6857732-18-5 539–542, E542, 543–548, E548, 549–551, E551, 552–553, E553, 554–557, E557, 558–56
564–571, E572, 573–601, E601, 602–603, E603, 604–609, E609, 610, E611, 611E631–E632, 632–648, E648, 649–657, E657, 658–660, E661, 661, E662, 663–672,
673–680, E681, 681–6857757-79-1 5487757-82-6 562, 5837783-20-2 5627790-98-9 563, 671–67210102-06-4 612, 623–62412076-52-7 582–58512125-01-8 62712125-02-9 562, 67012274-95-2 E572, 573–58112386-47-9 541–542, 56812581-78-1 57113075-28-0 546–54713266-86-9 54613278-81-4 E661, 661, E662, 663–66613520-83-7 623–62414041-32-8 54914286-13-6 591, 59215221-09-7 595–59716788-62-8 550–551, 552–553, 554–556, 558, 560, 563–16984-59-1 58817855-75-3 626–62818077-77-5 58518153-67-8 57118274-71-0 67818581-89-0 62018581-91-4 62018860-43-0 610–612, 614–620, 623–6219024-62-5 56819610-62-9 E542, 54320196-48-9 645–64620593-39-9 57621740-41-0 597–60026588-74-9 661, 663–66534501-13-8 655–65636568-63-5 652–65338078-70-5 54439292-10-9 648, E648, 649–65251407-02-4 54452689-31-3 666–66854955-63-4 640–642
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
.
24
620
694694 JIRI HALA
54955-64-5 64254974-80-0 593–59555328-36-4 54457127-86-3 E631–E632, 632–63864438-44-4 635, 637–63965113-20-4 679–680, E681, 681–68483835-49-6 624–62594667-45-5 600–601101362-32-7 E673, 675–677107176-04-5 547107305-72-6 547134893-75-7 547134893-76-8 547134902-18-4 548134902-19-5 548134902-20-8 548134902-21-9 548184444-18-3 629
12. Author Index
Page numbers preceded by E refer to evaluation texts whereas those not preceded by E refer to compiled tables
Akiba, K. 629Al Mahamid, I. 639, 640–641, 641–642Amphlett, C. B. E611, 611Ananev, A. V. 656, 678Anjaneyalu, B. 547Asprey, L. B. 678Babko, A. K. E572Bachelet, M. 581–582, 586–587Baluev, A. V. 590, 593–601Beckraft. K. A. 639–642Bevz, A. S. 640, 642Bischoff, H. E572, 579–580Blake, C. A. 581–584Bolshakov, K. A. E609, E611, 612, 615–616, 623–6Borodina, N. N. 672Boyer, G. D. E631–E632, 635Brauner, B. 569Britton, H. T. S. 556Brown, K. B. 581–584Bryzgalova, R. V. E551, 553, E564, 565–566Burney, G. A. E657, 658, E681, 682–685Bykhovskii, D. N. 624–625Campbell, A. B. E631–E632, 635Carpenter, S. A. 639–642Chander, K. E658, 659–660Chapru, G. C. E662Charles, R. G. 626Cheneau, G. E657, 659Chernitskaya, I. V. E551, 553, E564, 565–566Cheylan, E. 581–582, 586–587Clark, D. L. E631–E632, 638Claudel, B. 541–542, 546, E557, 560Colani, M. E548, 550, 555, 563, 588–589, E609, 610, E611, 612, 614–Coleman, C. F. 581–584
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
8
51
–668
47
–6751
695695IUPAC-NIST SOLUBILITY DATA SERIES
Courtois, C. 588Czerwinski, K. R. E572, 577, E648, 651Davidge, O. T. E611, 611Dawson, J. K. E661, E662, 663, 664Dervin, J. E542, 543–544Dorough, G. D. E603, 604–605, 608Drabkina, L. E. 652–653, 666–667, 667–66Duis, M. 581–582, 586–587Ebelmen, M. E609, 610Eberle, S. H. 671–672Elovskikh, N. N. 585Ermakova, T. A. E609, 615–616Essen, L. N. 563, 567Evteev, L. I. E548, 549, 602Fanghanel, F. E572, 577, E631–E632, E648, 6Faucherre, J. E542, 543–544Feldman, C. V. 547–548Felmy, R. W. E673, 676–677Ferri, D. E572, 575Francis, K. E. E661, E662, 665Freiser, H. 626Fromage, F. 544Fulton, A. R. E673, 676–677Gelman, A. D. 645–647, E648, 653–654, 656, E661, 661, E662, 663–664, 666Giffaut, E. 677Giolitti, F. 585Givon, M. E673, 673Goheen, M. W. 570Gorbenko, D. S. 643Goulette, J. C. 581–582, 586–587Grenthe, I. E572, 575, E631–E632, 63Grinberg, A. A. E548, 549, E601, 602–603, 60Hakem, N. 639–642Hall, R. E564, 565Hasilkar, S. P. E657, 659–660Hauser, G. E553, 554, E557, 558Hill, D. G. 581–584Holden, H. C. E557, 559Hoshi, M. 545, 654Jadhav, A. V. E657, 659–660Jain, H. C. E657, 659–660James, C. E557, 559Jarrett, M. E. D. 556Jenkins, W. A. 549Kadenskaya, V. S. E572Kanellakopulos, B. E631–E632, 637–638Kanno, T. 629Kapshukov, I. I. E631–E632, 640, 642Kato, Y. E572, 576, 578, 630–631Kazachenko, D. V. 546Keenan, T. K. 678Keller, C. 671–672Khedekar, N. B. E657, 659–660Khodakovskii, I. L. E572, 573Kim, J. I. E572, 577, 580, E631–E632, 637–638, E648, 650–651, E673, 674Kimura, T. E572, 576, 578–579, 630–63Kirby, H. W. 540
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
84
24
84
64
675
–657,8
696696 JIRI HALA
Klygin, A. E. 627, 629Kochergin, S. M. 557, E557, 561, E564, 566, 683–6Kolyaga, N. S. 627Kondratova, P. I. 645–646Korablin, E. V. E681, 681–682Korenmen, I. M. 562, 571Korolikhin, V. V. 562, 571Korovin, S. S. E609, E611, 612, 615–616, 207, 623–6Kotchevanova, L. G. 591, 592Kovalenko, K. N. 546Kovaleva, I. S. E542, 543, E548, 556, 568Krammer-Schnabel, U. E572, 579–580Krivokhatskii, A. S. E551, 557, E557, 561, E564, 566, 683–6Krot, N. N. 647, 656, 678Kurnakova, A. S. E548, E551, 552, 555, E564, 5Kuzmina, M. A. 548, 625Lang, G. E557, 560Lebedev, A. 679–680Lemire, R. J. E631–E632, 635Lingen, van der, G. W. B. 593Lowrie, R. S. 581–584Luerkens, D. W. 646–647Lumpov, A. A. 594–599Luzhnaya, N. P. E542, 543, E548, 556, 568Mandleberg, C. J. E661, E662, 665Marcus, Y. E673, 673Martell, A. E. E572Marx, G. E572Matorina, N. N. 656–657Maya, L. E572, E631–E632, 633McCuiston, J. M. 549Mefodeva, M. P. 647Meinrath, G. E572, 576, 578–579, E631–E632, 636, E673, 674–Mentzen, B. 545–546Mikhailov, G. G. 541–542Misko, Yu. S. 571, 630Moiseev, I. V. 672Monson, P. R. E564, 565Moskalev, P. N. 571, 630Moskvin, A. I. 563, 567, E601, E603, 604, 608, E611, 613, 621–622, 644, E648, 653–654, 656
E661, 661, E662, 663–664, 666–66Muniyappan, T. 547Myagkova-Romanova, M. A. 599–600Naumov, G. B. E572, 573Navarro, A. E557, 560Navratil, J. D. 655Neck, V. E631–E632, 637–638Neu, M. P. E631–E632, 638, 652Nigon, J. P. 678Nikitin, A. A. E572, 573Nikolaeva, N. M. E572, 574, 606Nikolskii, B. P. 591–592Nikolskii, N. A. 629Nitani, N. 578, 630–631Nitsche, H. E631–E632, 675–676Novak, C. F. E631–E632, 639, 642Oki, S. 628
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
184
66
625
9
675
64
66
7
7
4
697697IUPAC-NIST SOLUBILITY DATA SERIES
Pamfilova, G. G. 591–592Paramonova, V. I. 591–592Pashalidis, I. E572, 577, 580, E648, 650–65Pazukhin, E. M. E551, 557, E557, 561, E564, 566, 683–6Pazukhina, Yu. L. E551, 557, E557, 561, E564, 5Penneman, R. A. 678Perlova, C. V. 547–548Petrzhak, G. I. E548, 549, E601, 602–603, 607, 624–Pirozhkov, S. V. E572, 574, 679–680Plyushchev, V. E. E609, 615–616Porter, J. A. E657, 658, E681, 682–685Prussin, T. 640–641Rai, D. E333, 676–677Razbitnoi, V. M. 679–680Reas, W. H. E662, 665Reily, S. D. 652Riccio, G. E572, 575Roberts, K. E. E631–E632Robinson, R. J. 570Robouch, P. E631–E632, 634, E648, 64Rogozin, Yu. M. E551, 553, E564, 565–566Rudolf, G. E631–E632Runde, W. E572, 104, E631–E632, 637–638, 638, E648, 650, 652,Saito, A. E631–E632, 632Salutsky, M. L. 540Salvatore, F. E572, 575Samsonova, O. N. 546Sazonova, V. F. 546–548Schmitt, J. M. 581–584Sergeeva, E. I. E572, 573Shapkin, G. N. 571, 630Shestakova, I. A. 539–540Shiloh, M. E333, 673Shubochkin, L. K. E548, E551, 552, 555, E564, 5Silin, A. Yu. 590Silva, R. J. E631–E632, E333, 339Simakin, G. A. 639–640, 642Skrylev, L. D. 547–548Smirnova, E. A. E551, 557, E557, 561, E564, 5Smirnova, I. D. 627, 629Smirnova, T. V. 647Smith, R. E661, E662, 665Smith, R. M. E572Spitsyn, V. I. E548, E551, 553, 557, 603, 60Stabrovskii, A. I. 585Standifer, E. M. E631–E632Starzicky, E. 678Steinmeyer, R. H. 648Sudarikov, B. N. 569–570, 625–626, 668–32Suglubova, I. G. 590, 593–601Suzuki, N. 629Szilagy, M. 591Taranov, A. P. 590, 600–601Tsvetkova, V. T. 672Tucker, D. B. E631–E632Ueno, K. 545, E631–E632, 632, 645, 65Vdovenko, V. M. 593–598
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001
7
622
27
698698 JIRI HALA
Vecchiarelli, V. 585Visyashcheva, G. I. E631–E632, 640, 642Vitorge, P. E631–E632, 634, E648, 649, 67Volkov, Yu. F. E631–E632, 640, 642Watt, G. W. 549Whittemore, C. F. E557, 559Wirth, F. 550, E553, 554, E557, 558Wittenberg, L. J. 648Xi, R. H. E572, 579–580Yakovlev, G. N. 640, 642, 679–680Yoshida, Z. E572, 576, 578, 630–631Zaitseva, V. P. E648, 653–654Zakharov, O. I. 541–542Zakharova, F. A. E601, E603, 604, 608, E611, 613, 621–Zakolupin, S. A. E681, 681–682Zehenter, J. 589Zenkova, R. A. 643Ziv, D. M. 539–540Zvyagintsev, O. E. 569–570, 625–626, 668–3
IUPAC –NIST SOLUBILITY DATA SERIESEditor-in-Chief
M. SalomonSub-editor
solid/Liquid SystemsW. Voigt
EDITORIAL BOARDM. W. Chase~USA! C. Magalhaes~Portugal!R. Cohen-Adad~France! J. Sangster~Canada!J. Eysseltova` ~Czech Republic! K. Sawada~Japan!P. G. T. Fogg~UK! M.-Th. Saugier Cohen-Adad~France!H. Gamsja¨ger ~Austria! P. Scharlin~Finland!M. Gaune-Escard~France! D. G. Shaw~USA!A. Goto ~Japan! A. Skrzecz~Poland!C. Guminski~Poland! R. P. T. Tomkins~USA!E. Konigsberger~Austria! J. Vanderdeelen~Belgium!J. W. Lorimer~Canada! V. M. Valyashko~Russia!
Managing EditorM. Chase
National Institute of Standards and Technology
J. Phys. Chem. Ref. Data, Vol. 30, No. 2, 2001