ISO 1391-3-1976 标准详情
- 标准号:ISO 1391-3-1976
- 中文标题:工业用仲甲醛 试验方法 第3部分:铁含量的测定 2,2'-联吡啶光度法
- 英文标题:Paraformaldehyde for industrial use; Methods of test; Part 3 : Determination of iron content; 2,2'- Bipyridyl photometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1976-01-01
Conversion of iron contained in a test sample to sulphate by treatment with hot sulphuric acid. Oxidation of the iron present in the solution by hydrogen peroxide and subsequently reduction of the iron(III) by hydroxylammonium chloride. Formation of
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