ISO 5397:1984 (IULTCS/IUC 10) Preview

Leather -- Determination of nitrogen content and "hide substance" -- Titrimetric method

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

  • Status :  Published
    Publication date : 1984-03
  • Edition : 1
    Number of pages : 3
  • :
    IULTCS
    International Union of Leather Technologists and Chemists Societies
  • 59.140.30
    Leather and furs

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