1.1 该分类涵盖了商业上称为硬脂酸的复合材料。 1.2 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。 1.3 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 硬脂酸在橡胶硫化过程中很重要。人们认为，硬脂酸在硫化过程中与氧化锌或其他金属氧化物反应，形成可溶于橡胶的盐或肥皂，该盐或肥皂与促进剂反应，使其能够发挥其全部作用。 3.2 商业硬脂酸通常是棕榈酸、硬脂酸和油酸的混合物，通常从牛脂基原料中提取，但也可以从动物或植物来源的其他脂肪和油中提取。

1.1 This classification covers the compounding materials commercially known as stearic acid. 1.2 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. 1.3 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 Stearic acid is important in the rubber vulcanization process. It is believed that the stearic acid reacts with zinc-oxide or other metallic oxides, during vulcanization, to form a rubber soluble salt or soap, that reacts with the accelerator enabling it to exert its full effect. 3.2 Stearic acid of commerce is generally a mixture of palmitic, stearic, and oleic acids usually derived from tallow base stock but can be derived from other fats and oils of animal or vegetable origins.