ISO 8215:1985-表面活性剂——洗衣粉；总二氧化硅含量的测定——重量法 -国家数字标准馆

现行 ISO 8215:1985

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Surface active agents — Washing powders — Determination of total silica content — Gravimetric method 表面活性剂——洗衣粉；总二氧化硅含量的测定——重量法

发布日期： 1985-12-12

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.

分类信息

发布单位或类别：国际组织-国际标准化组织

ICS分类： 71.100.40化工产品 - 表面活性剂及其他助剂

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研制信息

归口单位： ISO/TC 91

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