BS EN ISO 17234-2-2011 皮革.皮革染色某种含氮色素的测定化学试验.4-氨基偶氮苯的测定

标准号：BS EN ISO 17234-2-2011
中文标准名称：皮革.皮革染色某种含氮色素的测定化学试验.4-氨基偶氮苯的测定
英文标准名称：Leather. Chemical tests for the determination of certain azo colorants in dyed leathers. Determination of 4-aminoazobenzene
标准类型：Y46
发布日期：2011/3/31 12:00:00
实施日期：2011/3/31 12:00:00
中国标准分类号：Y46
国际标准分类号：59.140.30
引用标准：ISO 2418;ISO 4044
适用范围：This part of ISO 17234 is supplementary to ISO 17234-1 and describes a special procedure to detect the useof certain azo colorants in commodities, which can release 4-aminoazobenzene. The procedure also detects4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities withoutreducing pretreatment.Azo colorants that are able to form 4-aminoazobenzene generate, under the conditions of ISO 17234-1, theamines aniline and 1,4-phenylenediamine. The presence of these 4-aminoazobenzene colorants cannot bereliably ascertained without additional information (e.g. the chemical structure of the colorant used) or withouta special procedure.The use of certain azo colorants, which may release, by reductive cleavage of their azo group(s), one or moreof the other aromatic amines listed in Annex XVII of Regulation (EC) No. 1907/2006 of the EuropeanParliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals(REACH), except 4-aminoazobenzene, cannot be determined quantitatively with this method.