1.1 本试验方法包括测定术语中所述的松香和松香衍生物中不溶物的量 D804 . 1.2 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。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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 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《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====== 3.1 松香，尤其是树胶和木松香，偶尔含有少量污染物，如沙子、污垢或树皮。由于生产过程中使用的原料或生产过程中可能产生的原料，松香衍生物偶尔含有微量不溶性物质。在所有情况下，此类不溶性物质的存在应尽量少。本试验方法描述了一种快速可靠的程序，用于测定此类不溶物的量。这是基于松香及其大多数衍生物可溶于多种有机溶剂的知识，而大多数常见的污染物则不可溶。它对于内部质量控制而不是销售规范特别有用。

1.1 This test method covers the determination of the amount of insoluble matter in rosin and rosin derivatives as described in Terminology D804 . 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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 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 Rosin, particularly gum and wood rosin, occasionally contains small amounts of contamination such as sand, dirt or bark. Rosin derivatives occasionally contain traces of insoluble material as a result of the raw materials used in their production or they may be generated during the production process. In all instances the presence of such insoluble material should be minimal. This test method describes a rapid and reliable procedure for determining the amount of such insoluble matter. It is based on the knowledge that rosin and most of its derivatives are soluble in numerous organic solvents whereas most common contaminants are not. It is especially useful for internal quality control rather than sales specifications.