ISO 4325-1990 标准详情
- 标准号:ISO 4325-1990
- 中文标题:肥皂和洗涤剂 螯合剂含量的测定 滴定法
- 英文标题:Soaps and detergents; determination of chelating agent content; titrimetric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1990-04
A test portion of the sample is dissolved in water, the pH of the solution adjusted to 4.65 and the solution titrated against standard copper(II) sulphate solution using 1-(2-pyridylazo)-2-naphthol as indicator. Principally the method has been design
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