Corrosion cell description. - ecochemie.nl

Corrosion Cells Description

Table of Contents

1 – 1 L Corrosion Cell ................................................................................................. 3 1.1 – Presentation and part list .............................................................................. 3 1.2 – Glass cell vessel ............................................................................................ 4 1.3 – Ag/AgCl reference electrode ......................................................................... 4 1.4 – Stainless steel counter electrodes.................................................................. 5 1.5 – Polypropylene sample holder ........................................................................ 5 1.6 – Thermometer................................................................................................ 6 1.7 – Gas inlet ....................................................................................................... 7

2 – 400 mL Corrosion Cell .......................................................................................... 7 2.1 – Presentation and part list .............................................................................. 7 2.2 – Glass cell vessel ............................................................................................ 9 2.3 – Glass cell lid .................................................................................................. 9 2.4 – Steel clamp ................................................................................................. 10 2.5 – Ag/AgCl reference electrode ....................................................................... 10 2.6 – Stainless steel counter electrodes................................................................ 10 2.7 – Polyoxymethylene sample holder ................................................................ 11 2.8 – Thermometer.............................................................................................. 12 2.9 – Gas inlet ..................................................................................................... 12

3 – Flat cell .............................................................................................................. 13 3.1 – Presentation and part list ............................................................................ 13 3.2 – Glass cell vessel .......................................................................................... 15 3.3 – Ag/AgCl reference electrode ....................................................................... 15 3.4 – Stainless steel counter electrode and cell cover ........................................... 15 3.5 – Polyvinyl chloride sample holder ................................................................. 16 3.6 – Gas inlet ..................................................................................................... 18

Appendix – Chemical resistance table of Polypropylene (PP) and Polyoxymethylene (POM) ...................................................................................................................... 19

Autolab Corrosion cells

1 – 1 L Corrosion Cell

The 1 litre corrosion cell has been designed according to ASTM standards (G5, G59, G61), the sample holder can fit samples with a diameter between 14.7 and 16 mm and a thickness between 0.5 and 4 mm. The exposed surface area is 1.0 cm2. The holder is made of Polypropylene (PP) with a seal of rubber.

1.1 – Presentation and part list

The cell has the following positions available: two for the Stainless steel counter electrode holders, one for the thermometer, one for the gas in- and outlet, and one for the Luggin capillary and the reference electrode (see Figure 1).

Figure 1 – Overview of the 1 L corrosion cell

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Table 1 provides a list of items included with the 1 L corrosion cell.

Item code Description CORR.1LCELL Complete 1 L corrosion cell

6.0733.100 Single junction Ag/AgCl reference electrode CORR.STEEL Stainless steel (SS 316) counter electrode (2) 6.1241.030 Counter electrode holder (2) CORR.THERM 0-150 °C thermometer CORR.1LHLD Polypropylene sample holder CORR.1LMSH Mount for sample holder CORR.1LVESSEL Corrosion cell vessel (one litre) CORR.1LBJ Ball joint for Luggin capillary CORR.1LCLMP Stainless steel clamp for ball joint CORR.1SEAL Rubber sample seal (set of 2) CORR.1LRNG Polypropylene locking ring

Table 1 – Overview of the items included with the 1 L corrosion cell

1.2 – Glass cell vessel

The jacketed cell vessel has a content of one litre. There is an inlet and an outlet present for water or other heating or cooling liquid. On the top side of the vessel there is a position available for the Polypropylene (PP) sample holder and a small drain is available to empty the cell.

1.3 – Ag/AgCl reference electrode

The reference electrode is filled with 3 M KCl solution. Please make sure that the electrode contains enough solution during the measurement. This electrode is connected to the blue banana plug (RE) of the cell cable. The electrode should be placed inside the capillary. The Luggin capillary is fitted with a spherical ball joint which allows positioning of the capillary tip with respect to the sample holder.

Please make sure that when mounting the sample holder, the position of the Luggin capillary is such that the tip of the capillary is located directly in front of the sample holder.

The standard reference electrode potential is 210 mV ± 5 mV with respect to the Standard Hydrogen Electrode (SHE).

Other reference electrodes can be used in combination with the corrosion cell. Please contact your Autolab distributor for more information.

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1.4 – Stainless steel counter electrodes

The stainless steel counter electrodes can be inserted in the supplied electrode holders. The electrode diameter is 2 mm. The two electrodes are connected by a short lead. The cell cable of the Autolab is then connected with one of the two electrodes. The standard counter electrodes delivered with the cell are made from SS316.

The counter electrode holders are made of Polypropylene (see Figure 2).

Figure 2 – Counter electrode holder

1.5 – Polypropylene sample holder

The sample holder is made of Polypropylene (PP). This is a lightweight, low-friction, and wear-resistant material with good physical and processing properties and capable of operating in temperatures in excess of 90 degrees Celsius.

The chemical resistance table of PP is provided at the end of this document. Please consult this table carefully before exposing the sample holder to a solution.

The sample holder is used to mount the small flat metal sample on which corrosion analysis needs to be performed (see Figure 3). The sample can be mounted and unmounted by removing the locking ring by hand. Two rubber seals ( and ) are used to limit the exposed surface of the sample to 1 cm².

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Figure 3 – Overview of the sample holder and the mounting/unmounting procedure

The sample holder can then be placed into the cell in such a way that the distance between the sample and the Luggin capillary is minimised. Connection to the sample is made by connecting the WE cable of the Autolab to the sample holder. On delivery the sample holder contains one test sample.

The test-sample is made of Sn coated steel. The test procedure for this sample is a potential scan from - 0.2 V vs the open circuit potential to + 0.1 V vs the open circuit potential, with a sweep rate of 1 mV/s in a 0.1 M KCl solution at room temperature. The resulting curve should give a polarisation resistance of approximatively 300 Ohm.

1.6 – Thermometer

On the top of the cell lid one space is available to place a thermometer.

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1.7 – Gas inlet

A gas inlet with valve is standard supplied with the cell. The valve can be used to purge through the electrolyte or to cover the liquid with a Nitrogen blanket.

2 – 400 mL Corrosion Cell

The 400 mL corrosion cell has been designed for most corrosion experiments. the sample holder can fit 14 mm diameter samples. The exposed surface area is 0.785 cm2. The holder is made of Polyoxymethylene (POM) with a seal of PTFE.


The cell has the following positions available: two for the Stainless steel counter electrode holders, one for the thermometer, one for the gas in- and outlet, and one for the Luggin capillary and the reference electrode (see Figure 4).

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Figure 4 – Overview of the 400 mL corrosion cell

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Table 2 provides a list of items included with the 400 mL corrosion cell.

Item code Description CORR.CELL Complete 400 mL corrosion cell

6.0733.100 Single junction Ag/AgCl reference electrode CORR.STEEL Stainless steel (SS 316) counter electrode (2) 6.1241.030 Counter electrode holder (2) CORR.THERM 0-150 °C thermometer CORR.HOLD Polyoxymethylene sample holder CORR.CAP Corrosion cell lid CORR.VESSEL Corrosion cell vessel (400 millilitre) CORR.CLAMP Stainless steel clamp

Table 2 – Overview of the items included with the 400 mL corrosion cell


The jacketed cell vessel has a content of 400 millilitre. There is an inlet and an outlet present for water or other heating or cooling liquid. On the side of the vessel there is a position available for the Polyoxymethylene (POM) sample holder and a small drain to empty the cell.

2.3 – Glass cell lid

The cell lid has the following positions available:

• Two for the stainless steel counter electrode holders • One for the thermometer • One for the gas in- and outlet • One for the Luggin capillary and the reference electrode

Note

A Polyvinylidene difluoride (PVDF) sample holder is available on request (CORR.HLD.PVDF).

Note

It is possible to apply some vaseline on the rim of the corrosion cell to make it air tight.

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2.4 – Steel clamp

The stainless steel clamp can be used to keep the cell lid in its position on top of the cell vessel.


The reference electrode is filled with 3 M KCl solution. Please make sure that the electrode contains enough solution during the measurement. This electrode is connected to the blue banana plug (RE) of the cell cable. The electrode should be placed inside the capillary. The Luggin capillary can be positioned in height with respect to the working electrode.

Please make sure that when mounting the sample holder that the position of the Luggin capillary is such that the tip of the capillary is located directly in front of the sample holder.



2.6 – Stainless steel counter electrodes

The stainless steel counter electrodes can be inserted in the supplied electrode holders. The electrode diameter is 2 mm. The two electrodes are connected by a short lead. The cell cable of the Autolab is then connected with one of the two electrodes. The standard counter electrodes delivered with the cell are made from SS316.

The counter electrode holders are made of Polypropylene (see Figure 5).

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Figure 5 – Counter electrode holder

2.7 – Polyoxymethylene sample holder

The sample holder is in POM (Polyoxymethylene), or Delrin as it is known commercially. This is a lightweight, low-friction, and wear-resistant thermoplastic material with good physical and processing properties and capable of operating in temperatures in excess of 90 °C.

The chemical resistance table of POM is provided at the end of this document. Please consult this table carefully before exposing the sample holder to a solution.

The sample holder is used to mount a metal sample on which a corrosion analysis needs to be performed. The sample holder can be disassembled by removing the screw on one side and taking out the contact pin. The sample can be placed in the holder itself, on top of the Viton O-ring that is present at the end of the holder. The contact pin can be placed back and tightened with the screw. A spring mechanism inside the pin ensures that the pressure on the sample is such that leakage is avoided. The sample holder can then be placed into the cell in such a way that the distance between the sample and the capillary is minimised. Connection to the sample is made by connecting the WE cable of the Autolab to the sample holder. On delivery the sample holder contains one test sample. The diameter of the sample is 14 mm. The surface area exposed to the solution is 0.785 cm2.

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The test-sample is made of Sn coated steel. The test procedure for this sample is a scan from - 0.2 V vs the open circuit potential to + 0.1 V vs the open circuit potential, with a sweep rate of 1 mV/s in a 0.1 M KCl solution at room temperature.

The resulting curve should give a polarisation resistance of approx. 300 Ohm.

2.8 – Thermometer

On the top of the cell lid one space is available to place a thermometer.

2.9 – Gas inlet

A gas inlet with valve is standard supplied with the cell. The valve can be used to purge through the electrolyte or to cover the liquid with a Nitrogen blanket.

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3 – Flat cell

The flat cell has been designed to measure corrosion properties of large flat coated or bare metal samples immersed in an electrolyte solution.


The flat cell consists of a glass vessel fitted on a PVC holder. Leakage of electrolyte is prevented by the use of a Viton O-ring and three wing nuts. The exposed surface area of the sample is 16.9 cm2. The flat cell is supplied with a large area stainless steel counter electrode and a Ag/AgCl reference electrode (see Figure 6).

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Figure 6 – Overview of the flat cell

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Table 3 provides a list of items included with the flat cell.

Item code Description FLAT.CELL Complete flat cell

6.0733.100 Single junction Ag/AgCl reference electrode FLAT.COUNTER Stainless steel (SS 316) counter electrode FLAT.GAS Gas inlet/outlet FLAT.RING Viton O-ring (set of 5) FLAT.HOLDER Flat cell sample holder FLAT.TOP PVDF cell cover FLAT.VESSEL Flat cell vessel with Viton O-ring

Table 3 – Overview of the items included with the flat cell


The flat cell consists of a glass vessel with a diameter of 43 mm. The lower end of the cell is fitted with a 1 cm thick lid. At the bottom of this lid, a groove accommodating a Viton O-ring is located. The diameter of the lid is 68 mm. The diameter of the O-ring located at the bottom of the glass vessel is 52 mm.


The reference electrode is filled with 3 M KCl solution. Please make sure that the electrode contains enough solution during the measurement. This electrode is connected to the blue banana plug (RE) of the cell cable.



3.4 – Stainless steel counter electrode and cell cover

The stainless steel counter electrode, , is embedded into the Polyoxymethylene (POM) flat cell cover, . The counter electrode is located close to the working electrode. The counter electrode connection located on the top cover of the cell is a 4 mm banana plug to which the CE (black) of the Autolab is connected, . The counter electrode position can be adjusted by unscrewing the black fitting, and sliding the shaft of the electrode up or down (see Figure 7).

A black screw is located on the side of the flat cell cover to allow the cover to be tightened against the cell vessel.

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Figure 7 – The counter electrode and cell cover

3.5 – Polyvinyl chloride sample holder

The sample holder is in Polyvinyl chloride (PVC). It consists of two parts:

• A bottom part, which provides the electrical contact to the sample • A top part which is used to clamp the glass cell

The sample (shown in Figure 8), must have a diameter larger than the diameter of the Viton O-ring, (52 mm). To assemble the cell, position the sample on top of the O-ring and then place the cell and sample on the bottom part of the sample holder, . Make sure that the sample is in contact with the electrode connector spring (see Figure 8).

Note

Do not over tighten the black screw located on the side of the flat cell cover to avoid damaging the cell vessel.

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Figure 8 – Overview of the sample holder (bottom part), cell and sample

Close the sample holder by positioning the top part of the holder on the bottom part (see Figure 9). Position the washers on the bolts embedded in the bottom part of the sample holder. Close the cell using the wing nuts provided (see Figure 9).

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Figure 9 – Close the sample holder by positioning the top part on top of the bottom part of the sample holder

The test-sample is made of Sn coated steel. The test procedure for this sample is a potential scan from - 0.2 V vs the open circuit potential to + 0.1 V vs the open circuit potential, with a sweep rate of 1 mV/s in a 0.1 M KCl solution at room temperature. The resulting curve should give a polarisation resistance of approximatively 300 Ohm.

3.6 – Gas inlet

A gas inlet with valve is standard supplied with the cell. This inlet can be used to purge the cell with Nitrogen.

Note

Do not apply excessive force when closing the sample holder.

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Appendix – Chemical resistance table of Polypropylene (PP) and Polyoxymethylene (POM)

Table 41 provides an overview of the chemical resistance of Polypropylene and Polyoxymethylene in different media.

The following resistances grades are used:

• A – Excellent stability. • B – Good: minor effects, slight corrosion or discoloration. • C – Moderate: Moderate Effect, not recommended for continuous use.

Softening, loss of strength, swelling may occur. • D – Severe effect: not recommended for any use. • N/A: no information available.

Chemical Polypropylene Polyoxymethylene Acetate Solvent N/A B (room temperature)

Acetic Acid D B

Acetic Acid 20% C A

Acetic Acid 80% D A

Acetic Acid, Glacial D A (room temperature)

Acetic Anhydride D B (room temperature)

Acetyl Chloride (dry) D D

Acrylonitrile N/A A (room temperature)

Adipic Acid N/A B (up to 50 °C)

Alcohols:Hexyl A N/A

Alcohols:Octyl A N/A

Aluminum Chloride N/A A

Aluminum Chloride 20% C A

Aluminum Fluoride C A

Aluminum Potassium Sulfate 10% C A

1 http://www.coleparmer.com/Chemical-Resistance

Note

The table provides a list of environments for which grade C or D is reported for either Polypropylene or Polyoxymethylene. The media for which no information is available are also indicated.

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http://www.coleparmer.com/Chemical-Resistance


Aluminum Potassium Sulfate 100% C A

Amines D B (up to 50 °C)

Ammonia 10% D A (up to 50 °C)

Ammonia Nitrate C A

Ammonia, anhydrous D A

Ammonia, liquid D A (up to 50 °C)

Ammonium Acetate N/A A

Ammonium Bifluoride D A

Ammonium Carbonate D A

Ammonium Caseinate D N/A

Ammonium Hydroxide C A

Ammonium Persulfate D A

Ammonium Sulfite D A (up to 50 °C)

Ammonium Thiosulfate B N/A

Amyl Chloride A D

Aniline Hydrochloride N/A D

Antifreeze D D

Antimony Trichloride N/A A

Aqua Regia (80% HCl, 20% HNO3) D B (room temperature)

Arochlor 1248 N/A D

Aromatic Hydrocarbons A D

Arsenic Acid D A

Barium Cyanide B D

Barium Hydroxide D B

Benzaldehyde A D

Benzene A (room temperature) D

Benzene Sulfonic Acid N/A D

Benzyl Chloride A C (room temperature)

Bleaching Liquors N/A A (room temperature)

Bromine D D

Butadiene A C

Butyl Amine C (room temperature) B (room temperature)

Butyl Ether D D

Butyl Phthalate N/A B (up to 50 °C)

Butylene A N/A

Calcium Bisulfide D A

Calcium Bisulfite D A

Calcium Chlorate A N/A

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Calcium Chloride D A (up to 50 °C)

Calcium Hydroxide D A (up to 50 °C)

Calcium Hypochlorite D A (room temperature)

Calcium Nitrate D A (up to 50 °C)

Calcium Sulfate D A

Carbolic Acid (Phenol) D B

Carbon Bisulfide A D

Carbon Disulfide A (room temperature) D

Carbon Tetrachloride B (room temperature) D

Carbon Tetrachloride (dry) N/A D

Carbon Tetrachloride (wet) A (room temperature) D

Chloric Acid D N/A

Chlorinated Glue D N/A

Chlorine (dry) D D

Chlorine Water D D

Chlorine, Anhydrous Liquid A (room temperature) D

Chloroacetic Acid D C (room temperature)

Chlorobenzene (Mono) D C (room temperature)

Chlorobromomethane N/A A

Chloroform A C (room temperature)

Chlorosulfonic Acid D D

Chromic Acid 10% D D


Chromic Acid 5% D D


Cloroxr (Bleach) D D

Copper Fluoborate B N/A

Copper Sulfate >5% D A

Copper Sulfate 5% D A

Cresols D D

Cresylic Acid D A (room temperature)

Cupric Acid N/A A (up to 50 °C)

Cyanic Acid D N/A

Cyclohexane A (room temperature) D

Cyclohexanone A D

Diacetone Alcohol N/A A (room temperature)

Dichlorobenzene N/A C (room temperature)

Dichloroethane A (room temperature) D

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Diethyl Ether N/A A (room temperature)

Dimethyl Aniline D D

Dimethyl Formamide D A

Diphenyl N/A D

Diphenyl Oxide D D

Dyes C N/A

Ethane A (room temperature) D

Ethanolamine D D

Ether A (room temperature) D

Ethyl Benzoate N/A B (room temperature)

Ethyl Chloride A (room temperature) D

Ethyl Ether A (room temperature) D

Ethyl Sulfate N/A N/A

Ethylene Bromide N/A D

Ethylene Chloride A (room temperature) C (room temperature)

Ethylene Chlorohydrin D D

Ethylene Diamine D N/A

Ethylene Dichloride B (room temperature) D

Ethylene Oxide D D

Ferric Chloride D A

Ferric Nitrate D A

Ferric Sulfate D A

Ferrous Chloride D A

Ferrous Sulfate D A

Fluorine D D

Formaldehyde 100% A C

Freon 113 A D

Freon TF A D

Freonr 11 D A

Furan Resin D D

Furfural A D

Gallic Acid N/A A

Gasoline, unleaded A C (room temperature)

Glue, P.V.A. A N/A

Gold Monocyanide A N/A

Grease D N/A

Heptane A C (up to 50 °C)

Hydraulic Oil (Petro) B D

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Hydraulic Oil (Synthetic) N/A D

Hydrazine B C

Hydrobromic Acid 100% D C (room temperature)

Hydrobromic Acid 20% C A (up to 50 °C)

Hydrochloric Acid 100% C B (room temperature)

Hydrochloric Acid 20% C B (up to 50 °C)

Hydrochloric Acid 37% C C

Hydrochloric Acid, Dry Gas N/A B

Hydrocyanic Acid (Gas 10%) C A

Hydrofluoric Acid 100% D C (room temperature)

Hydrofluoric Acid 20% D A (up to 50 °C)

Hydrofluoric Acid 50% D A (up to 50 °C)

Hydrofluoric Acid 75% D C (room temperature)

Hydrogen Gas N/A A

Hydrogen Peroxide 10% D A

Hydrogen Peroxide 100% D B (room temperature)



Hydrogen Sulfide (aqua) C A (room temperature)

Hydrogen Sulfide (dry) N/A A (room temperature)

Hydroxyacetic Acid 70% A N/A

Iodine D C

Iodine (in alcohol) D N/A

Iodoform N/A N/A

Isooctane N/A A (up to 50 °C)

Isopropyl Acetate D B (room temperature)

Isopropyl Ether D B

Isotane N/A D

Ketones D C

Lacquer Thinners D D

Lacquers D D

Lead Nitrate N/A A (up to 50 °C)

Lime B N/A

Lye: Ca(OH)2 Calcium Hydroxide D A (up to 50 °C)

Lye: NaOH Sodium Hydroxide C A

Magnesium Bisulfate N/A A (up to 50 °C)

Magnesium Oxide A N/A

Maleic Anhydride D D

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Manganese Sulfate A (room temperature) N/A

Mercuric Cyanide N/A B

Mercurous Nitrate N/A A

Methyl Acetate B D

Methyl Acetone D N/A

Methyl Acrylate B D

Methyl Bromide D C

Methyl Butyl Ketone D D

Methyl Cellosolve D B

Methyl Chloride B D

Methyl Dichloride D D

Methyl Ethyl Ketone C B

Methyl Ethyl Ketone Peroxide N/A N/A

Methyl Isobutyl Ketone N/A A

Methyl Isopropyl Ketone N/A N/A

Methyl Methacrylate D D

Methylamine D A (up to 50 °C)

Monochloroacetic acid D N/A

Monoethanolamine D B

Morpholine N/A B (up to 50 °C)

Mustard C A

Nickel Nitrate N/A A (up to 50 °C)

Nitrating Acid (< 15% HNO3) N/A C

Nitrating Acid (> 15% H2SO4) D C

Nitrating Acid (< 15% H2SO4) N/A C

Nitric Acid (20%) D A (up to 50 °C)

Nitric Acid (50%) D B

Nitric Acid (5-10%) D A

Nitric Acid (Concentrated) D D

Nitrobenzene C B (room temperature)

Nitrous Acid N/A A

Nitrous Oxide N/A D

Oils:Aniline D A

Oils:Anise D N/A

Oils:Bay D N/A

Oils:Bone D A

Oils:Cinnamon D D

Oils:Creosote D C

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Oils:Diesel Fuel (20, 30, 40, 50) D A (room temperature)

Oils:Fuel (1, 2, 3, 5A, 5B, 6) D B

Oils:Ginger A N/A

Oils:Hydraulic Oil (Petro) B D

Oils:Hydraulic Oil (Synthetic) N/A D

Oils:Lemon D N/A

Oils:Orange D A

Oils:Palm A N/A

Oils:Peanut A D

Oils:Peppermint D N/A

Oils:Rapeseed A D

Oils:Rosin N/A A (up to 50 °C)

Oils:Sesame Seed D A

Oils:Sperm (whale) D N/A

Oils:Tanning D N/A

Oleum 100% D D

Oleum 25% D D

Ozone C B

Pentane B D

Perchloric Acid C C

Perchloroethylene B D

Petrolatum B D

Phenol (Carbolic Acid) D B

Phosphoric Acid (> 40%) D A (up to 50 °C)

Phosphoric Acid (crude) D B (up to 50 °C)

Phosphoric Acid (molten) D D

Phosphoric Acid (< 40%) D A (up to 50 °C)

Phosphoric Acid Anhydride D A

Phosphorus Trichloride D N/A

Photographic Developer D A

Photographic Solutions D A (up to 50 °C)

Phthalic Acid C A

Phthalic Anhydride C D

Plating Solutions, Cadmium Plating: Fluoborate Bath 38 °C

C A

Plating Solutions, Chromium Plating: Barrel Chrome Bath 35 °C

D A

Plating Solutions, Chromium Plating: Black Chrome Bath 46 °C

D A

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Plating Solutions, Chromium Plating: Chromic-Sulfuric Bath 55 °C

D A

Plating Solutions, Chromium Plating: Fluoride Bath 55 °C

D A

Plating Solutions, Chromium Plating: Fluosilicate Bath 35 °C

D D

Plating Solutions, Copper Plating (Acid): Copper Fluoborate Bath 49 °C

C A

Plating Solutions, Copper Plating (Misc): Copper (Electroless)

D A

Plating Solutions, Gold Plating: Acid 24 °C N/A A

Plating Solutions, Gold Plating: Cyanide 65 °C

N/A A

Plating Solutions, Gold Plating: Neutral 24 °C

N/A A

Plating Solutions, Indium Sulfamate Plating R.T.

N/A A

Plating Solutions, Iron Plating: Ferrous Am Sulfate Bath 65 °C

N/A A

Plating Solutions, Iron Plating: Ferrous Chloride Bath 88 °C

N/A C

Plating Solutions, Iron Plating: Ferrous Sulfate Bath 65 °C

N/A A

Plating Solutions, Iron Plating: Fluoborate Bath 63 °C

N/A A

Plating Solutions, Iron Plating: Sulfamate 60 °C

N/A A

Plating Solutions, Iron Plating: Sulfate-Chloride Bath 72 °C

N/A A

Plating Solutions, Lead Fluoborate Plating N/A A

Plating Solutions, Nickel Plating: Electroless 94 °C

N/A D

Plating Solutions, Nickel Plating: Fluoborate 38-77 °C

N/A A

Plating Solutions, Nickel Plating: High-Chloride 55-72 °C

N/A A

Plating Solutions, Nickel Plating: Sulfamate 38-60 °C

N/A A

Plating Solutions, Nickel Plating: Watts Type 46-72 °C

N/A A

Plating Solutions, Rhodium Plating 49 °C N/A A

Plating Solutions, Silver Plating 27-49 °C N/A A

Plating Solutions, Tin-Fluoborate Plating 38 °C N/A A

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Plating Solutions, Tin-Lead Plating 38 °C N/A A

Plating Solutions, Zinc Plating: Acid Chloride 60 °C

N/A A

Plating Solutions, Zinc Plating: Acid Fluoborate Bath R.T.

N/A A

Plating Solutions, Zinc Plating: Acid Sulfate Bath 66 °C

N/A A

Plating Solutions, Zinc Plating: Alkaline Cyanide Bath R.T.

N/A A

Potassium Bicarbonate C A

Potassium Chromate C A

Potassium Cyanide Solutions C A

Potassium Ferrocyanide N/A A

Potassium Iodide N/A A (up to 50 °C)

Potassium Oxalate N/A N/A

Potassium Sulfide N/A A

Pyrogallic Acid D A

Resorcinal N/A A (up to 50 °C)

Salicylic Acid D A (room temperature)

Salt Brine (NaCl saturated) N/A A

Silver Bromide C N/A

Sodium Aluminate B N/A

Sodium Benzoate N/A A (up to 50 °C)

Sodium Bisulfite C A

Sodium Borate (Borax) N/A A (up to 50 °C)

Sodium Bromide A N/A

Sodium Chromate D N/A

Sodium Fluoride N/A A

Sodium Hydroxide (80%) D A

Sodium Hypochlorite (<20%) D A

Sodium Hypochlorite (100%) D B

Sodium Metasilicate D A

Sodium Peroxide D B

Sodium Silicate C A

Sodium Sulfite N/A A (up to 50 °C)

Sodium Tetraborate B N/A

Sodium Thiosulfate (hypo) C (room temperature) A (up to 50 °C)

Sorghum A N/A

Soy Sauce A N/A

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Stannic Chloride C A

Stannic Fluoborate C N/A

Stannous Chloride N/A A

Stoddard Solvent A C

Styrene A N/A

Sulfate (Liquors) D A

Sulfur Chloride D C (room temperature)

Sulfur Trioxide N/A C

Sulfur Trioxide (dry) D D

Sulfuric Acid (<10%) D A (up to 50 °C)

Sulfuric Acid (10-75%) D A (room temperature)

Sulfuric Acid (75-100%) N/A C (room temperature)

Sulfuric Acid (cold concentrated) N/A A (up to 50 °C)

Sulfuric Acid (hot concentrated) N/A D

Sulfurous Acid C A

Sulfuryl Chloride A N/A

Tetrachloroethane A C

Tetrachloroethylene A D

Tetrahydrofuran A C (up to 50 °C)

Tin Salts N/A A

Toluene (Toluol) C (room temperature) C (room temperature)

Trichloroacetic Acid N/A A

Trichloroethane A C

Trichloroethylene D C1-Fair

Trichloropropane A N/A

Tricresylphosphate C A (room temperature)

Triethylamine D D

Trisodium Phosphate A A

Turpentine A (up to 50 °C) D

Vinyl Acetate N/A B (room temperature)

Water, Deionized N/A A (up to 50 °C)

White Liquor (Pulp Mill) D A (room temperature)

Zinc Chloride C A

Zinc Hydrosulfite C N/A

Zinc Sulfate C A

Table 4 – Overview of the chemical compatibility of Polypropylene and Polyoxymethylene

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Corrosion cell description. - ecochemie.nl

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