ISO 1592:1977
w
ISO 1592:1977
6183

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.


General information 

  •  :  Withdrawn
     : 1977-11
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.080.30 Organic nitrogen compounds

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