Standard Test Methods for Chemical Analysis of Blue Pigments
3.1 These test methods are suitable for determining if impurities are present and establishing that the required pigments are present. These test methods may be used for manufacturing quality control.
1.1 These test methods cover procedures for the chemical analysis of blue pigments known commercially as iron blue, copper phthalocyanine blue, and ultramarine blue.
1.2 The analytical procedures appear in the following order:
IRON BLUE PIGMENTS
Moisture by the Brabender Moisture Tester
7 and 8
Moisture by Toluene Distillation
Water-Soluble Matter by Extraction
Water-Soluble Salts by Electrical Conductivity
Detection of Acid-Insoluble Extenders
12 and 13
Detection of Acid-Soluble Extenders
14 to 17
Detection of Organic Colors and Lakes
COPPER PHTHALOCYANINE BLUE PIGMENTS
Moisture and Other Volatile Matter
Detection of Basic Dye Derivatives
Detection of Other Organic Coloring Matter
Detection of Ultramarine Blue
Detection of Iron Blue
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address the safety concerns 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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