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Standard Classification System for Chemicals According to Functional Groups 按功能组别划分的化学品标准分类系统
发布日期: 2018-06-01
1.1 本标准提供了化合物的分类系统,其中化学品主要根据化学类别分配三位代码。 2. 多功能化合物应按与其组成官能团相关的所有适用代码进行分类。 1.2 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====== 2.1 在化学品与其他化学品或材料相互作用的许多情况下,相互作用具有强烈的依赖性,并且通常与存在的官能团相关。这些相互作用包括聚合物材料的化学反应、溶解和溶胀/渗透。因此,制定化学品分类的标准方法很有用。 2.2 该分类系统的一个应用是根据服装材料的耐化学性选择化学防护服。 3. , 4. , 5. 只有极少数使用防护服的化学品的耐化学性数据可用。然而,对于没有可用数据的化学品,了解化学类别有时可以深入了解潜在服装材料的阻力。 注1: 目前的知识状况排除了仅从化学类别进行可靠估计。 2.3 除防护服外,该分类系统还促进了各领域研究人员开发预测方法。
1.1 This standard provides a classification system for chemical compounds whereby chemicals are assigned a three-digit code based primarily on chemical class. 2 Poly-functional compounds should be classified by all applicable code numbers associated with their component functional groups. 1.2 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 ====== 2.1 In many situations where chemicals are interacting with other chemicals or materials, the interaction is strongly dependent and often correlated with the functional group(s) present. These interactions include chemical reaction, dissolution, and swelling/permeation of polymeric materials. For this reason, it is useful to have a standard means for classifying chemicals. 2.2 One application for this classification system is in the selection of chemical protective clothing based on the chemical resistance of the clothing materials. 3 , 4 , 5 Chemical resistance data are available for only a very small fraction of the chemicals for which protective clothing is used. However, for chemicals for which no data are available, a knowledge of the chemical class sometimes can give insight into the resistance of a prospective clothing material. Note 1: The present state of knowledge precludes reliable estimates from chemical class alone. 2.3 The classification system also facilitates the development of predictive methodology by researchers in a variety of fields, in addition to protective clothing.
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归口单位: F23.30
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