Draft
International Standard
ISO/DIS 17234-2
Leather — Chemical tests for the determination of certain azo colorants in dyed leathers — Part 2: Determination of 4-aminoazobenzene
Reference number
ISO/DIS 17234-2
Edition 2
© ISO 2026
Draft International Standard

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Under development
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 17234-2:2011

ISO/DIS 17234-2

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CHF 67
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Abstract

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
     : Under development

    You can help develop this draft international standard by contacting your national member

    Stage
    : DIS ballot initiated: 12 weeks [40.20]
  • Edition
     : 2
    Number of pages
     : 16
  • Technical Committee :
    IULTCS
    ICS :
    59.140.30 
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