ISO 5397:1984
p
ISO 5397:1984
11439

Abstract

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The principle consists in decomposition of a test portion by Kjeldahl method, distillation of the ammonia liberated, determination of the nitrogen content by titration of the ammonia with sulfuric or hydrochloric acid, using phenolphthalein as indicator. The method is applicable to all types of leather in all types of tannage.


General information 

  •  : Published
     : 1984-03
  •  : 1
     : 3
  •  : IULTCS International Union of Leather Technologists and Chemists Societies
  •  :
    59.140.30 Leather and furs

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