ISO 17234-2:2011 (IULTCS/IUC 20-2) Preview

Leather -- Chemical tests for the determination of certain azo colorants in dyed leathers -- Part 2: Determination of 4-aminoazobenzene

ISO 17234-2:2011 is supplementary to ISO 17234-1 and describes a special procedure to detect the use of certain azo colorants in commodities, which can release 4-aminoazobenzene. The procedure also detects 4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities without reducing pretreatment.

Azo colorants that are able to form 4-aminoazobenzene generate, under the conditions of ISO 17234‑1, the amines aniline and 1,4-phenylenediamine. The presence of these 4-aminoazobenzene colorants cannot be reliably ascertained without additional information (e.g. the chemical structure of the colorant used) or without a special procedure.


General information

  • Status :  Published
    Publication date : 2011-03
  • Edition : 1
    Number of pages : 16
  • :
    IULTCS
    International Union of Leather Technologists and Chemists Societies
  • 59.140.30
    Leather and furs

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