ISO 24362-3:2014
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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
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27-09-2018
English, French
22-01-2014
Azo colorants that are able to form 4-aminoazobenzene, generate under the conditions of ISO 243621:2014 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.
ISO 243623:2014 is supplementary to ISO 243621:2014 and describes a special procedure to detect the use of certain azo colorants in commodities, which may release 4-aminoazobenzene, accessible to reducing agent without extraction, particularly concerning textiles made of cellulose and protein fibres (e.g. cotton, viscose, wool, silk); accessible by extracting the fibres (e.g. polyester or imitation leather).
For certain fibre blends both parts of ISO 24362 (without or with extraction) may need to be applied.
The procedure detects as well 4-aminoazobenzene (Solvent Yellow 1) which is already available as free amine in commodities without reducing pre-treatment.
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