ISO/R 849-1968 标准详情
- 标准号:ISO/R 849-1968
- 中文标题:工业用磷酸 铁含量的测定 2,2'-联吡啶分光光度法
- 英文标题:Phosphoric acid for industrial use; Determination of iron content; 2,2'- Bipyridyl spectrophotometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1968-10
Applicable to products having Fe contents of more than 0.001 % (m/m). Preliminary hydrolysis of polyphophate acids by prolonged boiling in the presence of hydrochloric acid. Reduction of iron(III) by means of hydroxylammonium chloride. Formation of t
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