1.1 本试验方法旨在测定市售羟基亚磷酸锌颜料中的氧化锌和磷酸含量。锌含量通过乙二胺四乙酸（EDTA）滴定法测定并计算为氧化锌（ZnO），而磷含量通过比色法测定并计算为磷酸（H 3. 人事军官 3. ). 1.2 分析程序按以下顺序出现: 小节 氧化锌 6. 通过 8. 亚磷酸 9 通过 14 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本试验方法可用于确认羟基亚磷酸锌颜料中规定的氧化锌和磷酸含量。

1.1 This test method is intended for the determination of zinc oxide and phosphorous acid content of the pigment commercially known as zinc hydroxy phosphite. The zinc content is determined by ethylenediaminetetraacetate (EDTA) titration and calculated as zinc oxide (ZnO), while the phosphorus content is determined colorimetrically and calculated as phosphorous acid (H 3 PO 3 ). 1.2 The analytical procedures appear in the following order: Sections Zinc oxide 6 through 8 Phosphorous acid 9 through 14 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 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. ====== Significance And Use ====== 4.1 This test method may be used to confirm the stated zinc oxide and phosphorous acid content of zinc hydroxy phosphite pigment.