ISO 2489-1973 标准详情
- 标准号:ISO 2489-1973
- 中文标题:工业用硫酸钾;钾含量测定;对甲基橙的酸度测定
- 英文标题:potassium sulphate for industrial use; determination of acidity to methyl orange
- 标准类别:国际标准化组织标准ISO
- 发布日期:1973-04-01
The principle of the analysis consists in dissolution of the test solution in water and titration of the acidity, in presence of methyl orange, using standard volumetric sodium hydroxide solution. If the solution is coloured yellow the product is not
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