標準號：BS EN ISO 17234-2-2011
中文標準名稱：皮革.皮革染色某種含氮色素的測定化學試驗.4-氨基偶氮苯的測定
英文標準名稱：Leather. Chemical tests for the determination of certain azo colorants in dyed leathers. Determination of 4-aminoazobenzene
標準類型：Y46
發布日期：2011/3/31 12:00:00
實施日期：2011/3/31 12:00:00
中國標準分類號：Y46
國際標準分類號：59.140.30
引用標準：ISO 2418;ISO 4044
適用范圍：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.