本文件适用于用于治疗人类消费用水的聚氯化铝氢氧化硅酸盐。它描述了聚氯化铝氢氧化硅酸盐的特性，并规定了聚氯化铝氢氧化硅酸盐的要求，并指相应的分析方法。它提供了关于其在水处理中的用途的信息。它还决定了有关安全处理和使用聚氯化铝氢氧化硅酸盐的规则（见附件B）

This document is applicable to polyaluminium chloride hydroxide silicate used for treatment of water intended for human consumption. It describes the characteristics of polyaluminium chloride hydroxide silicate and specifies the requirements for polyaluminium chloride hydroxide silicate and refers to the corresponding analytical methods. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of polyaluminium chloride hydroxide silicate (see annex B).