1.1 本规程涵盖通过在强制通风烘箱中暴露于特定温度达规定时间段来测定烃类树脂的颜色稳定性。 1.2 根据实践，通过测试树脂的颜色变化来测量颜色稳定性，通过黄度指数色标来测量 E313 ，或Gardner Color的程序，测试方法 D6166 . 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 这种做法对质量控制和研究都很有用。

1.1 This practice covers determination of the color stability of a hydrocarbon resin by exposure to a specific temperature for a defined time period in a forced-draft oven. 1.2 Color stability is measured by the change in color of the test resin, measured via the yellowness index color scale, in accordance with Practice E313 , or the procedure for Gardner Color, Test Method D6166 . 1.3 The values stated in SI units are to be regarded as 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. ====== Significance And Use ====== 5.1 This practice is useful for both quality control and research.