Significance and Use
This test method has been developed to standardize the chemical analysis of zinc chromate yellow pigment and to provide alternate methods of analysis for chromium and zinc.
1. Scope
1.1 These test methods cover procedures for the chemical analysis of the pigment known commercially as “zinc yellow” or “ zinc chromate yellow.”
1.2 The analytical procedures appear in the following order:
| Sections |
| Moisture and Other Volatile Matter | 7 |
| Combined Water | 8 |
| Chromium: | |
| Dichromate Method | 9-11 |
| Thiosulfate Method | 9, 12, and 13 |
| Zinc: | |
| Hydroxyquinoline Method | 9, 14, and 15 |
| Ferrocyanide Method | 9, 16, and 17 |
| Alkaline Salts | 18 and 19 |
| Sulfates | 20 and 21 |
| Chlorides | 22 and 23 |
Matter Insoluble in Dilute Acetic
Acid | 24 |
| Coarse Particles | 25 |
1.3 The values stated in SI units are to be considered the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D185 Test Methods for Coarse Particles in Pigments
D280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
D478 Specification for Zinc Yellow (Zinc Chromate) Pigments
D1193 Specification for Reagent Water
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
Keywords
pigments—zinc chromate; zinc chromate; Anti-corrosion pigments--zinc chromate; Chromium content--paints/related coatings; Zinc content; Zinc pigments;
ICS Code
ICS Number Code 87.060.10 (Pigments and extenders)
DOI: 10.1520/D0444-88R08
ASTM International is a member of CrossRef.
Citing ASTM Standards
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