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Homepage>CSN Standards>79 LEATHER INDUSTRY>7938 Analysis and testing of leathers and furs>CSN EN ISO 17234-2 - Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4- aminoazobenzene
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CSN EN ISO 17234-2 - Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4- aminoazobenzene

CSN EN ISO 17234-2

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

CURRENCY
LANGUAGE
English
Category:793887
Released:2011
Number of Standard:CSN EN ISO 17234-2
DESCRIPTION

EN ISO 17234-2


EN ISO 17234-2 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.

Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.
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