ASTM D478-86(1997)

Standard Specification for Zinc Yellow (Zinc Chromate) Pigments

SCOPE
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.

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Relations

• Replaced By: ASTM D478-02 - Standard Specification for Zinc Yellow (Zinc Chromate) Pigments
• Effective Date: 10-Jul-2002

Standards Content (Sample)

ASTM D 478
ADOPTION NOTICE
ASTM D 478, "Standard Specification For Zinc Yellow (Zinc Chromate) Pigments,"
was adopted on 20 January 1995 for use by the Department of Defense (DoD).
to the DoD Adopting
Proposed changes by DoD activities must be submitted
Activity: Naval Construction Battalion Center, 1000 23rd Avenue, Code 156, Port
Hueneme, CA 93043-4301, DoD activities may obtain copies of this standard from
the Defense Printing Service Detachment Office, Bldg. 4D (Customer Service), 700
Robbins Avenue, Philadelphia, PA 19111-5094. The private sector and other
Government agencies may purchase copies from ASTM, 1916 Race Street,
Philadelphia, PA 19103.
Custodians: Adopting Activity :
Navy - YD1 Navy - YD1
(Project 8010-0814)
FSC 8010
DISTRIBUTION STATEMENT A. Approved for public release; distribution is
un1 imi ted.
~ ~
STDIASTM D478-ENGL 1986 m 0759530 ObLLôbO b34 m
Designation: D 478 - 86 (Reapproved 1997)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr , West Conshohocken PA 19428
Reprinted from the Annual Book of ASTM Standards Copyright ASTM
Standard Specification for
Zinc Yellow (Zinc Chromate) Pigments'
This standard is issued under the fixed designation D 478: the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (E) indicates an editorial change since the last revision or reapproval.
This standard has been approved for irse by agencies of the Department of Drfenae
TABLE 1 Composition Requirements
1. Scope
Type 1 Type II
1.1 This specification covers the pigments commercially
35 to 40 35 to 40
Zinc (calculated as ZnO), %
known as zinc yellow (zinc chromate).
Chromium (calculated as CrO,), 41 41
I .2 Two types are included:
min, %
1.2.1 Type I-High-purity, low sulfate and chloride content.
Sulfates (calculated as SO,), max, % 0.20 3.0A
Chlorides (calculated as CI), max, % 0.10 OBA
1.2.2 Type Il-Regular grade.
Alkaline salts (calculated as K,O), max, Yo 13 13
Matter insoluble in acetic acid 0.3 0.3
2. Referenced Documents
(1 +9) at 80"C, max, YO
2.1 ASTM Standards: Moisture and other volatile matter, rnax, % 1.0 1 .o
Coarse particles (total residue retained on 1 .o 1 .o
D 185 Test Methods for Coarse Particles in Pigments,
No. 325 (45-vm) sieve), rnax,
Pastes, and Paints2
A The maximum percent of sulfates or chlorides given in the table for Type II
D 387 Test Method for Color and Strength of Color Pig-
pigment apply if only one or the other is present (for this purpose amounts of less
ments with a Mechanical Muller3
than 0.05 % shall be disregarded). If both sulfates and chlorides are present, the
sum of the percentages of each divided by its respective maximum permissible
D 444 Test Methods for Chemical Analysis of Zinc Yellow
percentage (3.0 for SO, and 0.8 for Ci) shall not exceed 1 .O. For example, if a
Pigment (Zinc Chromate Yellow)*
sample contains 1.8 % SO, (0.6 of the maximum for sulfates) and 0.3 % chlorides
to the maximum
(0.4 of the maximum for chlorides), the
...