1.1 本规范涵盖技术级氯化钙，通常用于但不限于灰尘控制、稳定、除冰/除雪、其他道路调节目的、加速混凝土凝固以及作为干燥剂。 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%，分级值应根据实践中的四舍五入方法四舍五入至最接近的1% E29年 . 1.4 本标准的文本引用了注释和脚注，这些注释和脚注提供了解释性材料。 这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 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《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。

1.1 This specification covers calcium chloride, technical grade, typically used for, but not limited to, dust control, stabilization, ice/snow removal, other road-conditioning purposes, acceleration of the set of concrete, and as a desiccant. 1.2 The values stated in 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 standard references notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 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.