ISO 1592-1977 标准详情
- 标准号:ISO 1592-1977
- 中文标题:工业用尿素-氮含量测定-蒸馏后滴定法
- 英文标题:urea for industrial use-determination of nitrogen content-titrimetric method after distillation
- 标准类别:国际标准化组织标准ISO
- 发布日期:1977-11-15
The procedure is based on the catalytic conversion of nitrogen present in a test portion to ammonia by heating in concentrated sulphuric acid solution. Distillation and absorption of the ammonia in an excess of standard volumetric sulphuric acid solu
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