USA • PPG Silica Products • Customer Service: 1-800-243-6745 • Technical Service: 1-800-764-7369EUROPE • PPG Industries Chemicals bv • Customer Service: +31-596-676710 • Technical Service: +1-724-325-5369

Inhibisil™Anti-Corrosion Pigments

Applications

Coil Coatings

Appliance Finishes

Transportationand Heavy-DutyEquipment Coatings

Metal Furniture Finishes

Performance Data Sheet

Inhibisil 33

10-12

1

3

2H

100

CompetitiveSilica A Inhibisil 73 Competitive

Silica B Inhibisil 75 CompetitiveSilica C

10-11

1

3

2H

100

9-11

1

3

2H

100

6-10

1

3

2H

94-100

12

1

3

2H

100

10

1-2

3

2H

100

Anti-corrosive pigment

60° Gloss (ASTM D523)

T-Bend – No pick-off(ASTM D4145)

T-Bend – No cracking (ASTM D4145)

Pencil Hardness(ASTM D3363)

MEK Double Rubs (ASTM D5402)

Anti-corrosive pigment Inhibisil 33 CompetitiveSilica A Inhibisil 73 Competitive

Silica B Inhibisil 75 CompetitiveSilica C

Pass

1

2

Pass

2

2

Pass

2

1

Pass

3

2

Pass

2

3

Pass

2

3

1000 Hours Salt Spray (ASTM B117)

Face

Ave. Scribe

Ave. Edge

Pass

<1

<0.5

Pass

<1

<1

Pass

1

<1

Pass

1

<1

Pass

<1

<1

Pass

1

<1

1000 Hours 100% Humidity (ASTM D714)

Face

Ave. Scribe

Ave. Edge

Polyester/Melamine Coil PrimerCoatings Properties

Polyester/Melamine Coil PrimerCorrosion Properties

Substrate: Hot dipped galvanized steel pretreated with zinc phosphate with a chrome rinseTypical anti-corrosive loading range: 5-20% on total solids

Inhibisil™Anti-Corrosion Pigments

Performance Data Sheet

USAPPG Silica Products440 College Park DriveMonroeville, PA 15146 USA

Customer Service: 1-800-243-6745Technical Service: 1-800-764-7369

EUROPEPPG Industries Chemicals bvSilica ProductsP.O. Box 1819930 AD Delfzijl, The Netherlands

Customer Service: +31-596-676710Technical Service: +1-724-325-5369

Statements and methods presented are based upon the best available information and practices known to PPG Industries at present,but are not representations or warranties of performance, result or comprehensiveness. Further, the information provided herein, includingany specific reference to patents of other persons or entities, is not to be taken as a license to operate under or a recommendation topractice any patents, copyrights, or any other intellectual property right of any person or entity.

© 2008 PPG Industries, Inc. All Rights Reserved.Inhibisil is a trademark of PPG Industries.4/08

SiO2

SiO2

Inhibisil Anti-Corrosion Pigment Mechanism 2

SiO2

SiO2

A B

D

C

FeSiO3

E

2e–

2e–+H2O+1/2O2�2OH–

SiO2+2OH–

�

Fe+++SiO=3

Fe

SiO=3 +H2O

Environmentcontaining moisture (H2O) and oxygen (O2)

Coatingcontaining Inhibisilsilica particles

MetalSubstrate –electrically conductive

Inhibisil 33

42-43

3-4

5-5+

H

100

CompetitiveSilica A

42

3

5

H

100

Inhibisil 73

49

4

5

H

75

Anti-corrosive pigment

60° Gloss (ASTM D523)

T-Bend – No pick-off(ASTM D4145)

T-Bend – No cracking (ASTM D4145)

Pencil Hardness(ASTM D3363)

MEK Double Rubs (ASTM D5402)

Anti-corrosive pigment Inhibisil 33 CompetitiveSilica A Inhibisil 73

Pass

1-1.5

5-7.5

Pass

1

4.5

Pass

1.25

6.5

1000 Hours Salt Spray (ASTM B117)

Face

Ave. Scribe

Ave. Edge

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

Pass

1000 Hours 100% Humidity (ASTM D714)

Face

Ave. Scribe

Ave. Edge

Urethane Coil PrimerCorrosion Properties

Urethane Coil PrimerCoatings Properties

Substrate: Hot dippedgalvanized steel pretreatedwith zinc phosphatewith a chrome rinseTypical anti-corrosiveloading range: 5-20%on total solids