1.1 这些试验方法涵盖了双戊烯和相关萜烯溶剂的取样和试验程序，主要由蒸馏超过松节油范围的单环萜烯烃组成。 1.2 这些试验方法中给出的程序按以下顺序出现: 部分 取样 4. 分离水的检测和去除 5. 外貌 6. 颜色 7. 气味 8. 比重 9 折射率 10 作文 11 闪点 12 潮湿 13 1.3 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 3.1 这些测试方法中描述的测试程序已使用多年，强调的是双戊烯的物理性质而非化学成分。当双戊烯主要用作溶剂时，这些步骤就足够了。然而，目前，双戊烯被用作化学原料，因此了解其化学成分非常重要。试验方法 第6387页 描述了一种适用于测定双戊烯中主要和次要成分的毛细管气相色谱法。

1.1 These test methods cover procedures for sampling and testing dipentene and related terpene solvents, consisting chiefly of monocyclic terpene hydrocarbons distilling above the range for turpentine. 1.2 The procedures given in these test methods appear in the following order: Section Sampling 4 Detection and Removal of Separated Water 5 Appearance 6 Color 7 Odor 8 Specific Gravity 9 Refractive Index 10 Composition 11 Flash Point 12 Moisture 13 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 1.5 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 ====== 3.1 The testing procedures described in these test methods have been in use for many years and emphasize the physical properties rather than the chemical composition of dipentene. These procedures were sufficient when dipentene was used primarily as a solvent. Currently, however, dipentene finds application as a chemical raw material and a knowledge of its chemical composition is therefore important. Test Methods D6387 describe a capillary gas chromatography method which is suitable for determining both the major and minor components found in dipentene.