ISO 787-19-1974 标准详情
- 标准号:ISO 787-19-1974
- 中文标题:颜料的通用试验方法 第19部分:水溶性硝酸盐的测定(水杨酸法)
- 英文标题:General methods of test for pigments; part 19: determination of water-soluble nitrates (Salicylic acid method)
- 标准类别:国际标准化组织标准ISO
- 发布日期:1974-05
This document specifies a spectrophotometric method. The principle of the method consists in that the nitrate present in the extract of the sample is used to nitrate salicylic acid in sulphuric acid medium. The nitro-compound formed is of an intense
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