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Norm
ASTM D 85
Issue date: 2019 05 01
Standard Specification for Ochre Pigment
This specification covers ferrous earthy pigment included under the general term ldquo;ochre.rdquo; The pigment shall be a hydrated oxide of iron permeating a siliceous b...
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Withdrawn
: 2023 06 01
Publisher:
American Society for Testing and Materials
Format:
Digital | 2 Pages
Language:
English
Currently valid:
ICS
This specification covers ferrous earthy pigment included under the general term ldquo;ochre.rdquo; The pigment shall be a hydrated oxide of iron permeating a siliceous base and shall be free from added impurities and added coloring matter. The following test methods shall be conducted: chemical analysis of dry pigment; coarse particles; mass color and tinting strength; volatile matter; and moisture. The results of these test methods should conform to the pigment requirements.