1.1 本试验方法包括脂肪酸甲酯（FAME）沸程分布的测定。本试验方法适用于初始沸点大于100的FAMES（生物柴油，B100） °C，最终沸点低于615 通过该试验方法测量的大气压力下的°C。 1.2 该测试方法也适用于柴油和生物柴油（B1至B100）的混合物，但尚未评估这些样品类型的精度。 1.3 该试验方法不适用于分析含有低分子量组分的石油（例如石脑油、重整油、汽油、原油）。 1.4 通过该试验方法获得的沸程分布与通过试验方法获得等低效蒸馏的结果不等效 D86 或 D1160 ，尤其是初始沸点和最终沸点。 1.5 本试验方法采用模拟蒸馏法的原理。参见测试方法 D2887 ， D6352 和 D7213 。 1.6 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。 1.7 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。 1.8 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 FAMES的沸程分布提供了对与酯交换过程相关的产物组成的深入了解。经相关方共同同意，这种沸腾范围的气相色谱测定可用于代替传统的蒸馏方法进行产品规格测试。 5.2 生物柴油（FAMES）表现出沸点而不是蒸馏曲线。生产生物柴油的原料油和脂肪中的脂肪酸链主要由具有相似沸点的具有16至18个碳的直链烃组成。 生物柴油的大气沸点通常在330 °C至357 °C。本规范 D6751 360的值 90°C时的最高温度 %通过测试方法关闭 D1160 作为一种预防措施，以确保燃料中没有掺杂高沸点污染物。

1.1 This test method covers the determination of the boiling range distribution of fatty acid methyl esters (FAME). This test method is applicable to FAMES (biodiesel, B100) having an initial boiling point greater than 100 °C and a final boiling point less than 615 °C at atmospheric pressure as measured by this test method. 1.2 The test method can also be applicable to blends of diesel and biodiesel (B1 through B100), however precision for these samples types has not been evaluated. 1.3 The test method is not applicable for analysis of petroleum containing low molecular weight components (for example naphthas, reformates, gasolines, crude oils). 1.4 Boiling range distributions obtained by this test method are not equivalent to results from low efficiency distillation such as those obtained with Test Method D86 or D1160 , especially the initial and final boiling points. 1.5 This test method uses the principles of simulated distillation methodology. See Test Methods D2887 , D6352 , and D7213 . 1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.7 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. 1.8 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 boiling range distribution of FAMES provides an insight into the composition of product related to the transesterification process. This gas chromatographic determination of boiling range can be used to replace conventional distillation methods for product specification testing with the mutual agreement of interested parties. 5.2 Biodiesel (FAMES) exhibits a boiling point rather than a distillation curve. The fatty acid chains in the raw oils and fats from which biodiesel is produced are mainly comprised of straight chain hydrocarbons with 16 to 18 carbons that have similar boiling temperatures. The atmospheric boiling point of biodiesel generally ranges from 330 °C to 357 °C. The Specification D6751 value of 360 °C max at 90 % off by Test Method D1160 was incorporated as a precaution to ensure the fuel has not been adulterated with high boiling contaminants.