ISO 1690-1976 标准详情
- 标准号:ISO 1690-1976
- 中文标题:工业用硅酸钠和硅酸钾 二氧化硅含量的测定 不溶解物重量法
- 英文标题:Sodium and potassium silicates for industrial use; Determination of silica content; Gravimetric method by insolubilization
- 标准类别:国际标准化组织标准ISO
- 发布日期:1976-02
The procedure is based on evaporation to dryness of a test portion previously acidified with hydrochloric acid. Dissolution of the soluble salts, filtration and washing of the insoluble matter. Second evaporation of the filtrate and washings under th
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