1.1 本试验方法描述了测定双酚A（4,4）凝固点的程序 ′ -异亚丙基二苯酚）。 1.2 试验方法适用于测定150至157°C之间的凝固点。 1.3 在使用该方法确定测试结果是否符合适用规范时，应根据修约方法对结果进行修约 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 警告- 许多监管机构已将汞指定为一种危险物质，可导致严重的医疗问题。汞或其蒸汽已被证明对健康有害，并对材料具有腐蚀性。处理汞和含汞产品时要小心。有关更多信息，请参阅适用的产品安全数据表（SDS）。销售汞或汞- 当地或国家法律禁止含有产品或两者。用户必须确定其所在地销售的合法性。 1.6 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 9 . 1.7 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====== 5.1 双酚A的凝固点是其纯度的直接指示，尽管它没有提供任何杂质性质的信息。 5.2 高纯度双酚A的凝固点约为157°C。 5.3 该测试方法可用于内部质量控制或设定规格。

1.1 This test method describes the procedure for determination of the solidification point of bisphenol A (4,4 ′ -isopropylidene diphenol). 1.2 The test method has been found applicable for determination of the solidification point between 150 and 157°C. 1.3 In determining conformance of the test results using this 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 Warning— Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 1.6 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 9 . 1.7 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 ====== 5.1 The solidification point of bisphenol A is a direct indication of its purity, although it gives no information as to the nature of any impurities present. 5.2 High purity bisphenol A has a solidification point of approximately 157°C. 5.3 This test method can be used for internal quality control or for setting specifications.