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ASTM D1844-86(1999)

Historical Reaffirmation

Standard Test Methods for Chemical Analysis of Basic Lead Silicochromate

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1.1 These 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).

1.2 For liquid coatings the pigment must first be separated from the vehicle before conducting the analysis.

1.3 The 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

1.4 This standard does not purport to address 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. >


SDO ASTM: ASTM International
Document Number D1844
Publication Date July 10, 1999
Language en - English
Page Count 5
Revision Level 86(1999)
Supercedes
Committee D01.31
Publish Date Document Id Type View
June 1, 2020 D1844-86R20 Reaffirmation
Dec. 1, 2014 D1844-86R14 Reaffirmation
July 1, 2008 D1844-86R08 Reaffirmation
Dec. 1, 2003 D1844-86R03 Reaffirmation
July 10, 1999 D1844-86R99 Reaffirmation