ISO 8214-1985 表面活性剂 洗衣粉 无机硫酸盐的测定 重量法

标准号：ISO 8214-1985
中文标准名称：表面活性剂 洗衣粉 无机硫酸盐的测定 重量法
英文标准名称：Surface active agents; Washing powders; Determination of inorganic sulfates; 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. In the presence of silicates the solution of the residue is treated with hydrochloric acid and evaporated to dryness. The residue is dissolved in water and the operations are repeated twice. The last solution is filtered and in the filtrate or in the silicatefree solution of the first step the sulfates are precipitated with barium chloride. The precipitate is filtered, washed, heated at 900 degree Celsius and weighed.