ISO 1391-4-1976 工业用仲甲醛.试验方法.第4部分:水不溶物含量的测定
ISO 1391-4-1976 标准详情
- 标准号:ISO 1391-4-1976
- 中文标题:工业用仲甲醛.试验方法.第4部分:水不溶物含量的测定
- 英文标题:(withdrawn)paraformaldehyde for industrial use - methods of test - part iv: determination of water-insoluble matter first edition; corrected and reprinted - 1977
- 标准类别:国际标准化组织标准ISO
- 发布日期:1976-01-01
内容简介
The principle of the procedure consists in the dissolution of a test sample in a highly diluted sodium hydroxide solution, filtration by using a tared filter crucible, drying of the residue at (100 2) ?C. Determination of the in water insoluble subst
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