1.1 本试验方法涵盖了闪点计算公式，该公式代表了根据试验方法直接估算馏分燃料闪点温度的方法 1887年 数据根据方程式计算的值称为“计算闪点”。根据与试验方法的相关性，计算闪点公式适用于柴油燃料样品 第93天 超过47 °C至99 °C，并根据与试验方法的相关性测定喷气燃料样品 第56天 和测试方法 第3828页 超过35 °C至67 °C。 1.2 计算的闪点公式适用于IBP在90之间的柴油和喷气燃料 °C和162 °C（194 °F和324 °F），试验方法 1887年 5. % 恢复温度介于136 °C和207 °C（277 °F和405 °F）和试验方法 1887年 10 % 恢复温度介于142 °C和222 °C（288 °F和432 °F）。对于每种闪点试验方法（试验方法 第56天 ，测试方法 第93天 ，和测试方法 第3828页 )建立了一个单独的方程。看见 4.4 有关模拟蒸馏IBP的详细概述，5 %, 和10 % 每个方程的范围。 1.3 不超过给定阈值的计算诊断参数是接受计算闪点的先决条件。 1.4 诊断参数MSPE 十、 （平均和预测误差）根据T的重建检查样本的符合性 IBP公司 T 5. % 、和T 10 % 通过一个计算过程。MSPE的值 十、 不超过1.9的阈值水平 °C是接受计算闪点CFP的先决条件。 注1: 需要注意的是，在验证是否符合适用法规的过程中，此时计算的闪点结果未得到监管机构的认可。 注2: 根据模拟蒸馏数据得出的计算闪点取决于IBP温度和5 % 和10 % 恢复温度。 注3: 如果用户规范要求除本试验方法外的规定闪点试验方法，则在未获得比较数据和规范方同意的情况下，本试验方法或任何其他试验方法均不得替代规定的试验方法。 1.5 以国际单位表示的数值应视为标准。 1.5.1 例外情况- 括号中给出的值仅供参考。 1.6 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 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》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 闪点温度是测试样品在受控实验室条件下与空气形成可燃混合物的趋势的一种度量。 这只是在评估材料的整体可燃性危险时必须考虑的众多特性之一。 4.2 闪点在运输和安全法规中用于定义易燃和可燃材料。有关这些分类的精确定义，请参阅相关的特定法规。 4.3 闪点可指示相对不挥发或不易燃材料中可能存在高度挥发性和易燃材料。 4.4 在测试方法 1887年 数据可用，也就是说，为了确定沸点分布或计算其他物理性质，该测试方法提供了闪点的计算方法，而无需进行额外的分析。 表1 显示了IBP的范围，5 %, 和10 % 每个方程的结果。 4.5 在燃料的闪点已经初步确定的情况下，如果燃料的来源和制造模式保持不变，则计算的闪点可用作该燃料后续样品的闪点检查。

1.1 This test method covers the calculated flash point formula, which represents a means for directly estimating the flash point temperature of distillate fuels from Test Method D2887 data. The value computed from the equation is termed the “calculated flash point.” The calculated flash point formula is applicable to diesel fuel samples based on a correlation to Test Method D93 over the range from 47 °C to 99 °C, and to jet fuel samples based on a correlation to Test Method D56 and Test Method D3828 over the range from 35 °C to 67 °C. 1.2 The calculated flash point formula is valid for diesel and jet fuels with an IBP between 90 °C and 162 °C (194 °F and 324 °F), Test Method D2887 5 % recovery temperature between 136 °C and 207 °C (277 °F and 405 °F), and Test Method D2887 10 % recovery temperature between 142 °C and 222 °C (288 °F and 432 °F). For each flash point test method (Test Method D56 , Test Method D93 , and Test Method D3828 ) a separate equation has been established. See 4.4 for a detailed overview of the simulated distillation IBP, 5 %, and 10 % ranges per equation. 1.3 A calculated diagnostic parameter, not exceeding a given threshold value, is a prerequisite for acceptance of the calculated flash point. 1.4 The diagnostic parameter MSPE X (Mean Summed Prediction Error) checks the sample compliance, based on reconstruction of T IBP , T 5 % , and T 10 % of the sample, via a calculation procedure. A value for MSPE X not exceeding the threshold level of 1.9 °C is a prerequisite for accepting the calculated flash point, CFP. Note 1: It is important to note that calculated flash point results, at this time, are not recognized by regulatory organizations in verifying conformance to applicable regulations. Note 2: The calculated flash point derived from simulated distillation data depends upon the accuracy of determination of the IBP temperature and the 5 % and 10 % recovery temperatures. Note 3: If the user's specification requires a defined flash point test method other than this test method, neither this test method nor any other test method should be substituted for the prescribed test method without obtaining comparative data and an agreement from the specifier. 1.5 The values stated in SI units are to be regarded as the standard. 1.5.1 Exception— The values given in parentheses are for information only. 1.6 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. 1.7 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 The flash point temperature is one measure of the tendency of the test specimen to form a flammable mixture with air under controlled laboratory conditions. It is only one of a number of properties that must be considered in assessing the overall flammability hazard of a material. 4.2 Flash point is used in shipping and safety regulations to define flammable and combustible materials. Consult the particular regulation involved for precise definitions of these classifications. 4.3 Flash point can indicate the possible presence of highly volatile and flammable materials in a relatively non-volatile or non-flammable material. 4.4 In cases where Test Method D2887 data are available, that is, for determination of boiling range distribution or calculation of other physical properties, this test method provides a calculation method for flash point without performing an additional analysis. Table 1 shows the ranges for the IBP, 5 %, and 10 % results for each equation. 4.5 In the case where the flash point of a fuel has been initially established, the calculated flash point is useful as a flash point check on subsequent samples of that fuel, provided its source and mode of manufacture remain unchanged.