ASTM D444-88(1999) - 10.5.1999
 
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 to 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 24 Acid Coarse Particles 25

1.3 This standard does not purport to address all of the safety problems, 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

E11-24

Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves

E50-25

Standard Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

D478-02(2019)

Standard Specification for Zinc Yellow (Zinc Chromate) Pigments

D280-01(2023)

Standard Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments

D185-07(2023)

Standard Test Methods for Coarse Particles in Pigments

D1193-24

Standard Specification for Reagent Water