ISO 3198-1975 标准详情
- 标准号:ISO 3198-1975
- 中文标题:工业用氢氧化钠;硫磺化合物测定;还原和滴定测量法
- 英文标题:sodium hydroxide for industrial use; determination of sulphur compounds; method by reduction and titrimetry
- 标准类别:国际标准化组织标准ISO
- 发布日期:1975-08-01
Applicable to products the content of which, expressed as sulphate, is equal or more than 5 mg/kg. The principle consists in the reduction of the sulphur compounds to hydrogen sulphide by heating with a mixture of hydriodic acid and hypophosphorous a
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