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ASTM International , 12/01/2014
Publisher: ASTM
File Format: PDF
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1.1These test methods cover the chemical analysis of the pigment commercially known as basic lead silicochromate and are applicable to pigment supplied by the manufacturer and to pigment, but not mixed pigments, separated from liquid coatings. The presence of basic lead silicochromate species shall be confirmed by X-ray diffraction analysis (see Specification D1648).
1.2For liquid coatings the pigment must first be separated from the vehicle before conducting the analysis.
1.3The analytical procedures appear in the following order:
Sections
Lead oxide
6 to 14
Chromium trioxide
15 to 23
Silica
24 to 27
Moisture and other volatile matter
28
Coarse particles
29
Oil absorption
30
Mass color and tinting strength
31
1.4The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5This standard does not purport to address the safety concerns, 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.
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