ISO 8215-1985 表面活性剂 洗衣粉 总二氧化硅含量的测定 重量法

标准号：ISO 8215-1985
中文标准名称：表面活性剂 洗衣粉 总二氧化硅含量的测定 重量法
英文标准名称：Surface active agents; Washing powders; Determination of total silica content; gravimetric method
标准类型：G72;Y43
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G72;Y43
国际标准分类号：71.100.40
适用范围：From a test portion all ethanol-soluble matter is removed by extraction with ethanol. The solution of the ethanol-insoluble residue is treated with hydrochloric acid and evaporated to dryness. The residue is dissolved in water and the operations are repeated twice. From the solution obtained after this operations the precipitate is filtered, washed, heated to 900 鳦 and weighed.