Abstract
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 solution and back-titration with standard volumetric sodium hydroxide solution in the presence of an indicator. - Replaces ISO Recommendation R 1592-1970.
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Status: WithdrawnPublication date: 1977-11
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Edition: 1Number of pages: 4
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- ICS :
- 71.080.30 Organic nitrogen compounds
Life cycle
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