ASTM D444 : 88(2020)

Standard Test Methods for Chemical Analysis of Zinc Yellow Pigment (Zinc Chromate Yellow)

Standard Details

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International StandardDetails, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.