ASTM-D605 › Standard Specification for Magnesium Silicate Pigment (Talc)
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This specification establishes the properties and requirements for pigments that consist substantially of natural hydrous magnesium silicate (talc), and can be suitably processed to what is commercially known as paint pigment quality. Specimens shall be suitably sampled and tested, and should conform to specified requirements as to combined magnesium and calcium silicates content, calcium oxide content, aluminum and iron oxides content, loss on ignition, moisture and other volatile material, color, coarse particles, water-soluble matter, oil absorption, consistency, and fineness.
1.1 This specification covers pigments that consist substantially of natural hydrous magnesium silicate, and is restricted to those minerals that conform to the chemical limits prescribed herein and can be suitably processed to what is commercially known as paint pigment quality.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following hazard caveat applies to the test method portion of this specification only. 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.
1.4 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.
hydrous magnesium silicate; magnesium silicate; pigment; talc;; ICS Number Code 87.060.10 (Pigments and extenders)
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1982 R19 EDITION
June 11, 2019