1.1 本试验方法涵盖焦油和沥青中甲苯不溶物（TI）的测定。 1.2 由于该测试方法是经验性的，因此必须严格遵守程序的所有细节。 1.3 以国际单位制表示的数值应视为标准值。 1.3.1 例外情况- 其他非国际单位制单位仅供参考。 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。 第7节给出了具体的危险说明。 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 该试验方法有助于评估和表征焦油和沥青，是确定装运或供应来源均匀性的一个要素。

1.1 This test method covers the determination of toluene-insoluble matter (TI) in tar and pitch. 1.2 Since this test method is empirical, strict adherence to all details of the procedure is necessary. 1.3 The values stated in SI units are to be regarded as standard. 1.3.1 Exception— Other non-SI units are provided 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. Specific hazard statements are given in Section 7. 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 is useful for evaluating and characterizing tars and pitches and is one element in establishing the uniformity of shipment or sources of supply.