1.1 本试验方法涵盖了测定双酚A（4,4）铂钴颜色的程序 ′ -异亚丙基二苯酚）溶于甲醇。 1.2 本试验方法适用于测定20 Pt–Co颜色单位的双酚A溶液颜色。 1.3 以下内容适用于确定使用本试验方法的试验结果是否符合适用规范的目的，应根据实践中的四舍五入方法对结果进行四舍五入 E29年 . 1.4 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。 1.5 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。 有关具体的危险说明，请参阅第节 8. . 1.6 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 颜色是由双酚A中的杂质引起的。可接受的颜色量取决于双酚A的最终用途。 4.2 本试验方法可用于内部质量控制。此方法提供设置规范所需的信息。

1.1 This test method covers the procedure for determination of the Platinum-Cobalt Color of bisphenol A (4,4 ′ -Isopropylidenediphenol) dissolved in methanol. 1.2 This test method has been found applicable for the determination of solution color of bisphenol A to 20 Pt–Co color units. 1.3 The following applies for the purposes of determining the conformance of the test results using this test method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29 . 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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. For specific hazard statements, see Section 8 . 1.6 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 Color is caused by impurities in the bisphenol A. The acceptable amount of color depends on the end-use of the bisphenol A. 4.2 This test method can be used for internal quality control. This method provides the information required to set specifications.