Restricted Azo Dye and Colorant Testing
category
Restricted azo dye testing identifies aromatic amines with carcinogenic potential released by reductive cleavage of azo linkages in textile dyes under simulated skin contact conditions, using sodium dithionite reduction followed by diethyl ether extraction and GC-MS or HPLC-DAD quantification against regulatory limits of 30 milligrams per kilogram per amine.
Role
Prevents consumer exposure to carcinogenic aromatic amines from banned azo dyes in skin-contact textiles, ensuring compliance with EU REACH Annex XVII restrictions on 22 carcinogenic amines and equivalent national regulations across global textile export markets.
Ask AI about this topic
Understand
Apply
Explore
Learn
Watch & Learn
Loading videos…
Subtopics
- Reductive Cleavage Method for Azo Dyes EN ISO 14362 EN ISO 14362 extracts dyes from fabric with citrate buffer at pH 6, reduces azo bonds with sodium di…
- 4-Aminoazobenzene and Disperse Dye Screening 4-aminoazobenzene detection requires a specific extraction protocol using methanol solvent under mil…
- Benzidine and Dichlorobenzidine Amine Detection Benzidine and 3,3-dichlorobenzidine determination uses the standard EN ISO 14362 reductive cleavage …
- Natural Dye and Tannin Safety Assessment Natural dye safety assessment screens plant-derived colorants including indigo, madder, weld, and oa…
- Reactive and Acid Dye Extractability Testing Extractable dye testing quantifies unfixed residual reactive, acid, and direct dye content released …
- Colour Fastness to Artificial Perspiration Perspiration fastness testing sandwiches dyed fabric specimens between adjacent undyed cotton and wo…
- Fluorescent Brightening Agent Detection Fluorescent brightening agent analysis extracts stilbene, coumarin, and benzoxazole optical brighten…
- Chromate and Mordant Dye Residue Analysis Chrome mordant dye residue analysis quantifies total chromium and Cr(VI) content in wool textiles tr…
- Vat and Sulfur Dye Reduction Byproduct Testing Vat and sulfur dye byproduct analysis detects sulfide residues in sulfur-dyed textiles using potenti…
- Disperse Dye Allergenicity Screening in Polyester Disperse dye allergenicity screening extracts polyester fabric specimens with acetone or DMF and pro…