EU restricts 22 azodyes in leather and textiles under the EU REACH Annex XVII entry 43 and four testing methods are designated.
CEN’s updates on the designated standards are as below (except to EN ISO 17234-2):
Standard No. | Contents | Superseded Standard | Date of Implementation |
EN ISO 17234-1:2015 | Leather -- Chemical tests for the determination of certain azo colorants in dyed leathers -- Part 1: Determination of certain aromatic amines derived from azo colorants | EN ISO 17234-1:2010 | BS EN ISO 17234-1:2015 From 30 April 2015 |
EN ISO 17234-2:2011 | Leather -- Chemical tests for the determination of certain azo colorants in dyed leathers -- Part 2: Determination of 4-aminoazobenzene | / (not updated) | March 2011 |
EN ISO 14362-1:2017 | Textiles -- Methods for determination of certain aromatic amines derived from azo colorants -- Part 1: Detection of the use of certain azo colorants accessible with and without extracting the fibres | EN 14362-1:2012 | From 28 February 2017 |
EN ISO 14362-3:2017 | Textiles -- Methods for determination of certain aromatic amines derived from azo colorants -- Part 3: Detection of the use of certain azo colorants, which may release 4-aminoazobenzene | EN 14362-3:2012 | From 28 February 2017 |
Where textiles and leather articles come into direct or long-term contact with human skin or oral cavity, the detection limit of azocolourants and azodyes is 30 mg/kg. OEKO-TEX also designates EN 14362-1 and EN 14362-3 as the testing methods for azodyes in textiles. C&K Testing advises to test the products as per the most stringent requirements.
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