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This specification covers zinc yellow (zinc chromate) pigments used in rust-inhibiting protective coatings and metal primers for ferrous and non-ferrous metals. The two types of pigments include: Type I and Type II. The pigment shall conform to the required composition for zinc, chromium, sulfates, chlorides, alkaline slats, matter insoluble in acetic acid, moisture and other volatile matter, and coarse particles. The following tests shall be conducted: chemical analysis, coarse particles, and mass color and tinting strength.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
3.1 Zinc yellow is used in rust-inhibiting protective coatings and metal primers for ferrous and non-ferrous metals.
1.1 This specification covers the pigments commercially known as zinc yellow (zinc chromate).
1.2 Two types are included:
1.2.1 Type I—High-purity, low sulfate and chloride content.
1.2.2 Type II—Regular grade.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D185 Test Methods for Coarse Particles in Pigments
D387 Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller
D444 Test Methods for Chemical Analysis of Zinc Yellow Pigment (Zinc Chromate Yellow)
ICS Number Code 87.060.10 (Pigments and extenders)
UNSPSC Code 31211503(Pigment paints)
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ASTM D478-02(2019), Standard Specification for Zinc Yellow (Zinc Chromate) Pigments, ASTM International, West Conshohocken, PA, 2019, www.astm.orgBack to Top