標準號：ISO 8214-1985
中文標準名稱：表面活性劑 洗衣粉 無機硫酸鹽的測定 重量法
英文標準名稱：Surface active agents; Washing powders; Determination of inorganic sulfates; Gravimetric method
標準類型：G72;Y43
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G72;Y43
國際標準分類號：71.100.40
適用范圍：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.