1.1 本试验方法包括液化石油气（LP）以及丙烷和丙烯混合物中单个碳氢化合物的定量测定，不包括C范围内的高纯度丙烯 1. 至C 5. 组分浓度确定在0.01的范围内 % 至100 % 按体积计算。 1.2 该试验方法不能完全确定重于C的碳氢化合物 5. 以及非碳氢化合物材料，并且可能需要额外的测试来充分表征LPG样品。 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。 1.4.1 建议用户就本试验方法程序和相关活动的安全操作进行液化石油气安全培训。 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 液化石油气和丙烯混合物的碳氢化合物成分分布通常是这种材料的最终用途销售所必需的。化学原料或燃料等应用需要精确的成分数据，以确保质量一致。这些材料中微量的一些碳氢化合物杂质会对其使用和加工产生不利影响。 5.2 液化石油气和丙烯混合物的组分分布数据可用于计算物理性质，如相对密度、蒸汽压和发动机辛烷值（见实践 1959年2月 ). 当这些数据用于计算这些石油产品的各种性质时，成分数据的准确性和准确性是极其重要的。

1.1 This test method covers the quantitative determination of individual hydrocarbons in liquefied petroleum (LP) gases and mixtures of propane and propene, excluding high-purity propene in the range of C 1 to C 5 . Component concentrations are determined in the range of 0.01 % to 100 % by volume. 1.2 This test method does not fully determine hydrocarbons heavier than C 5 and non-hydrocarbon materials, and additional tests may be necessary to fully characterize an LPG sample. 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. 1.4.1 The user is advised to obtain LPG safety training for the safe operation of this test method procedure and related activities. 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 hydrocarbon component distribution of liquefied petroleum gases and propene mixtures is often required for end-use sale of this material. Applications such as chemical feed stocks or fuel require precise compositional data to ensure uniform quality. Trace amounts of some hydrocarbon impurities in these materials can have adverse effects on their use and processing. 5.2 The component distribution data of liquefied petroleum gases and propene mixtures can be used to calculate physical properties such as relative density, vapor pressure, and motor octane (see Practice D2598 ). Precision and accuracy of compositional data are extremely important when these data are used to calculate various properties of these petroleum products.