ISO 8215:1985 表面活性剂.洗涤粉.二氧化硅总含量的测定.重量分析法

标准编号：ISO 8215:1985

中文名称：表面活性剂.洗涤粉.二氧化硅总含量的测定.重量分析法

英文名称：Surface active agents — Washing powders — Determination of total silica content — Gravimetric method

发布日期：1985-12

标准范围

通过乙醇萃取，从试验部分去除所有乙醇可溶物。乙醇不溶残渣的溶液用盐酸处理并蒸发至干燥。残渣溶解在水中，重复操作两次。从该操作后获得的溶液中过滤、洗涤、加热至900°C并称重沉淀物。

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 °C and weighed.

标准预览图