1.1 本试验方法包括对初始沸点至少为260的油样进行分类的程序 °C（500 °F）转化为极性化合物、芳烃和饱和烃的碳氢化合物类型，并回收这些类型的代表性馏分。此分类用于橡胶填充剂和加工油的规范目的。 注1: 参见测试方法 D2226 . 1.2 本试验方法不直接适用于大于0.1的油 % 按质量计 戊烷不溶物。去除这些材料后，可以对这些油进行分析，但精度会降低（请参阅 附录X1 ). 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。 中给出了具体的警告声明 6.1 部分 7. , A1.4.1 和 A1.5.5 . 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 橡胶化合物中所含油的成分对化合物的特性和用途有很大影响。饱和烃、芳烃和极性化合物的测定是对该成分的关键分析。 5.2 饱和烃、芳烃和极性化合物的测定以及对所产生的馏分的进一步分析通常被用作一种研究方法，以帮助理解橡胶和其他用途中的油效应。

1.1 This test method covers a procedure for classifying oil samples of initial boiling point of at least 260 °C (500 °F) into the hydrocarbon types of polar compounds, aromatics and saturates, and recovery of representative fractions of these types. This classification is used for specification purposes in rubber extender and processing oils. Note 1: See Test Method D2226 . 1.2 This test method is not directly applicable to oils of greater than 0.1 % by mass pentane insolubles. Such oils can be analyzed after removal of these materials, but precision is degraded (see Appendix X1 ). 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. Specific warning statements are given in 6.1 , Section 7 , A1.4.1 , and A1.5.5 . 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 composition of the oil included in rubber compounds has a large effect on the characteristics and uses of the compounds. The determination of the saturates, aromatics, and polar compounds is a key analysis of this composition. 5.2 The determination of the saturates, aromatics, and polar compounds and further analysis of the fractions produced is often used as a research method to aid understanding of oil effects in rubber and other uses.