1.1 本规范涵盖了用作除冰器和道路施工或维护目的的氯化钠。 1.2 以国际单位制表示的数值应视为标准。 1.3 为了确定是否符合本规范，化学分析值应四舍五入至最接近的0.1 %, 级配值应四舍五入至最接近的1 %, 根据实践中的舍入法 E29年 . 1.4 本规范的文本引用了提供解释材料的注释和脚注。 这些注释和脚注不应视为本规范的要求。 1.5 以下预防性警告仅适用于 附件A1 本规范: 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。 1.6 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====== A1.2 意义和用途 A1.2.1 本附录中的化学分析程序确定了样品中氯化物的总量，并将该值表示为氯化钠。 A1.2.2 这种快速分析方法无法区分氯化钠和其他具有融冰能力的蒸发氯化物化合物。典型的岩盐和太阳盐有时含有少量的氯化钙 2. ，MgCl 2. 和KCl，具体取决于材料来源。当这种快速方法用于来自已知来源的连续装运时，它将提供快速、基本准确的测定所提供材料的氯化钠含量。因此，需要采用裁判法、测试法进行测试 E534 ，减少。

1.1 This specification covers sodium chloride intended for use as a deicer and for road construction or maintenance purposes. 1.2 The values stated as SI units are to be regarded as the standard. 1.3 For purposes of determining conformance to this specification, values for chemical analysis shall be rounded to the nearest 0.1 %, and values for grading shall be rounded to the nearest 1 %, in accordance with the rounding method in Practice E29 . 1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the specification. 1.5 The following precautionary caveat pertains only to the test method in Annex A1 of this specification: 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. 1.6 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 ====== A1.2 Significance and Use A1.2.1 The procedure for chemical analysis in this annex determines the total amount of chlorides present in the sample and expresses that value as sodium chloride. A1.2.2 This rapid method of analysis does not distinguish between sodium chloride and other evaporite chloride compounds with ice-melting capabilities. Typical rock salt and solar salt sometimes contains small amounts of CaCl 2 , MgCl 2 , and KCl, depending on the source of the material. When this rapid method is used on continuing shipments from a known source, it will provide a fast, essentially accurate determination of the sodium chloride content of the material furnished. Thus, the need for testing by the referee method, Test Method E534 , is reduced.