ISO 1391-5-1981 标准详情
- 标准号:ISO 1391-5-1981
- 中文标题:工业用多聚甲醛.试验方法.醛含量的测定.滴定法
- 英文标题:(withdrawn)paraformaldehyde for industrial use - methods of test - determination of aldehyde content - titrimetric method first edition
- 标准类别:国际标准化组织标准ISO
- 发布日期:1981-01-01
The method is applicable to solid paraformaldehyde of aldehyde contents in the range 67 % (m/m) to 97 % (m/m). The principle consists in the reaction of aldehyde present in a test portion with neutralized sodium sulphite solution. Titration of the li
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