【国外标准】 Standard Test Methods for Analysis of White Zinc Pigments

4.1 White zinc pigments find considerable use in white paints, and as such it is useful to formulators and users to be able to monitor the amounts of these pigments in whole paints. It is also of interest to raw material suppliers and paint producers to check the specifications of each pigment.1.1 These test methods cover procedures for the analysis of white zinc pigments.1.2 The analytical procedures appear in the following order:  SectionPreparation of Sample  6 Zinc OxideTotal Zinc, Using Diphenylamine as Internal Indicator  7 Total Zinc, Using Uranyl Acetate as External Indicator  8 Total Impurities  9 Total Sulfur 10Moisture and Other Volatile Matter 11Leaded Zinc OxideTotal Lead 12Total Zinc 13Total Sulfur 14Total Impurities 15Moisture and Other Volatile Matter 16Water-Soluble Salts 17Zinc SulfideZinc Oxide 18Zinc Sulfide 19Water-Soluble Salts 20Moisture and Other Volatile Matter 21Barium Sulfate 22Titanium Dioxide 231.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 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.1.5 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.