Norm

NEN-EN-ISO 17234-2:2011 en

Leer - Chemische beproevingen voor de bepaling van zekere azo kleurmiddel in geverfd leer - Deel 2: Bepaling van 4-Aminoazobenzeen

79,70

Over deze norm

Status Definitief
Aantal pagina's 16
Gepubliceerd op 01-03-2011
Taal Engels
This part of ISO 17234 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. The use of certain azo colorants, which may release, by reductive cleavage of their azo group(s), one or more of the other aromatic amines listed in Annex XVII of Regulation (EC) No. 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), except 4-aminoazobenzene, cannot be determined quantitatively with this method.

Details

ICS-code 59.140.30
Nederlandse titel Leer - Chemische beproevingen voor de bepaling van zekere azo kleurmiddel in geverfd leer - Deel 2: Bepaling van 4-Aminoazobenzeen
Engelse titel Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene
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