Principle: Aqueous extraction of a test portion, followed by the evaporation and drying at 102 +/-2 degrees centigrade, and sulfating and ashing of the residue at 800 degrees centigrade, to yield the water-soluble inorganic matter. Treatment of the residue with hydrochloric acid, and titration with standard volumetric disodium ethylenedinitrilotetraacetate solution.

General information

  • Status :  Withdrawn
    Publication date : 1984-02
  • Edition : 1
    Number of pages : 3
  • :
    International Union of Leather Technologists and Chemists Societies
  • 59.140.30
    Leather and furs

Life cycle

A standard is reviewed every 5 years

Revisions / Corrigenda

  • Now withdrawn
    ISO 5399:1984

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