1.1 这些测试方法包括羟丙基纤维素的测试。 1.2 测试程序按以下顺序出现: 小节 潮湿 4 – 9 粘度 10 – 16 酸碱度 17 – 21 燃烧残渣 22 – 28 羟丙氧含量 29 – 36 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 26.6 . 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====== 5.1 本试验结果用于计算样品中的总固体；通常情况下，在此试验温度下挥发的所有材料都被指定为水分。 5.2 水分分析（以及灼烧残渣）是衡量材料中活性聚合物含量的一种方法，在确定各种配方中使用的羟丙基纤维素含量时必须加以考虑。

1.1 These test methods cover the testing of hydroxypropylcellulose. 1.2 The test procedures appear in the following order: Sections Moisture 4 – 9 Viscosity 10 – 16 pH 17 – 21 Residue on Ignition 22 – 28 Hydroxypropoxy Content 29 – 36 1.3 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. For specific hazard statements, see 26.6 . 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 The results of this test are used for calculating the total solids in the sample; and, by common usage, all materials volatile at this test temperature are designated as moisture. 5.2 Moisture analysis (along with residue on ignition) is a measure of the amount of active polymer in the material and must be considered when determining the amount of hydroxypropylcellulose to use in various formulations.