1.1本指南提出了物理、化学和毒理学测试方法，用于表征来自各种精炼过程（包括再精炼、废油和精炼原油）的碳氢化合物润滑油基础油。本指南无意涵盖所有可能采用的测试。买方和卖方有责任确定并同意本指南的实施。 1.2本指南仅适用于基础油，不适用于成品润滑油。 1.3本指南适用于由碳氢化合物组成的基础油，用于配制包括汽车和工业润滑油在内的产品。 这些基础油在100°C时的粘度通常约为2至40 mm2/s（cSt）（在100°F时为50至3740 SUS）。 1.4本标准无意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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 碳氢化合物润滑油基础油的一致性能是广泛应用中的一个关键因素，如发动机机油、工业润滑油和金属加工液。 此外，在许多此类应用中，人类暴露于作为配方产品成分的基础油中，因此可能需要考虑健康或安全问题。本指南建议对碳氢化合物润滑剂的制造和使用知识渊博的人员理解的在某些或所有应用中具有重要意义的特性和潜在污染物进行汇编。每种建议性质和潜在污染物的讨论见 附录X1 ，每个类别按字母顺序排列在四个类别中。 基础油变化的潜在来源包括原材料、制造工艺、操作条件、储存、运输和混合。 所建议的测试方法、基础油性质和潜在污染物在许多常见情况下可能有用，尽管人们认识到，有些特定应用和情况可能有不同的要求。与特定应用相关的性能测试应作为可接受性的基础。 诸如测试频率和如何应用测试结果的细节等问题没有得到详细解决。 买方和卖方有责任确定并同意本指南的实施。本指南是该讨论的基础。

1.1 This guide suggests physical, chemical, and toxicological test methods for characterizing hydrocarbon lubricant base oils derived from various refining processes including re-refining, used oils, and refining crude oil. This guide does not purport to cover all tests which could be employed. It is the responsibility of the buyer and seller to determine and agree upon the implementation of this guide. 1.2 This guide applies only to base oils and not to finished lubricants. 1.3 This guide is relevant to base oils composed of hydrocarbons and intended for use in formulating products including automotive and industrial lubricants. These base oils would typically have a viscosity of approximately 2 to 40 mm2/s (cSt) at 100°C (50 to 3740 SUS at 100°F). 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The consistent performance of hydrocarbon lubricant base oils is a critical factor in a wide variety of applications such as engine oils, industrial lubricants, and metalworking fluids. In addition, in many of these applications humans are exposed to the base oils as a component of a formulated product such that health or safety considerations may need to be addressed. This guide suggests a compilation of properties and potential contaminants that are understood by those knowledgeable in the manufacture and use of hydrocarbon lubricants to be of significance in some or all applications. A discussion of each of the suggested properties and potential contaminants is provided in Appendix X1 , with each listed alphabetically within four categories. Potential sources of base oil variation include the raw material, manufacturing process, operating conditions, storage, transportation, and blending. The test methods, base oil properties, and potential contaminants suggested are those that would likely be useful in many common situations, although it is recognized that there are specific applications and situations that could have different requirements. Performance testing related to the specific application should serve as the basis for acceptability. Issues such as frequency of testing and the specifics of how the test results are to be applied are not addressed in detail. It is the responsibility of the buyer and seller to determine and agree upon the implementation of this guide. This guide serves as a basis for that discussion.