Draft
International StandardISO/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
ISO/DIS 17234-2
Edition 2
© ISO 2026
Proyecto Norma internacional
ISO/DIS 17234-2
94345
Este borrador de Norma Internacional se encuentra en la fase de consultas con los miembros de ISO.
Reemplazará ISO 17234-2:2011
Resumen
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.
Ciclo de vida
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Anteriormente
PublicadoISO 17234-2:2011
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