4-Aminoazobenzene and Disperse Dye Screening
topic
4-aminoazobenzene detection requires a specific extraction protocol using methanol solvent under mild reduction conditions distinct from the standard ISO 14362 method, as this amine can be released directly without full azo bond cleavage; additional HPLC screening for intact disperse dye substances banned under REACH including Disperse Orange 11 and Disperse Yellow 3 complements amine analysis.
Role
Addresses a specific regulatory gap in standard azo dye testing by detecting both the intact banned disperse dye substances and their carcinogenic amine cleavage products, ensuring comprehensive screening of polyester and acetate textiles where disperse dyes are the predominant colorant class.
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