In February 2017, the European Committee for Standardization (CEN) released the new standard methods for determination of restricted aromatic amines derived from azo colorants in textiles.
Two updated standards are:
EN ISO 14362-1:20171 - 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 ISO 14362-3:20172 - 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
The new standards superseded the standards which were published in 2012. The CEN members are required to adopt the EN standard as their national standard without any alteration. They should also withdraw the conflicting national standard by 31 August 2017.
The azo dyes testing standards are the official testing methods for the REACH Annex XVII entry 43. The restriction applies to textiles and leather products which are direct and prolonged skin contact or oral cavity. The 2012 versions stated in the legal text will soon be replaced by the updated version and official endorsement will be published via the Official Journal of the European Union (OJEU).
The changes of the new standards are highlighted as follows:
EN ISO 14362-1:2017
Changed the extraction reagent from chlorobenzene to xylene to extract disperse dyes because of lower toxicity and lower adverse environmental effect of xylene
Edited the testing method of synthetic fibres. The combined reduction has been removed. direct reduction and colorant extraction on the sample may be carried out individually.
Newly added false-positive results evaluation in Appendix C
Newly added Annex G for pigments
EN ISO 14362-3:2017
Changed the extraction reagent (same as EN ISO 14362-1:2017)
Clarified the preparation and use of sodium dithionite solution
How can TÜV SÜD help? TÜV SÜD has a dedicated technical solutions team to support you with root cause analysis, problem identification, suggestions for improvement and failure minimisation.
Training and seminar on understanding the RSL (Restricted Substance List) and MRSL (Manufacturing Restricted Substance List)
Testing services on raw materials and final products
Being part of the Zero Discharge of Hazardous Chemicals (ZDHC) programme, we review the entire value chain of footwear and textiles