Describing a chemical compound containing both an amine group and an azo group (two nitrogen atoms bonded together); used in dyes and dyes.
From 'amino-' (containing amine) + 'azo' (containing -N=N- bond). Chemical nomenclature for dye compounds developed in 19th-20th century.
Aminoazo dyes revolutionized fashion because they could produce bold, stable colors that didn't fade—by combining amine and azo groups, chemists unlocked the ability to dye textiles in almost any color imaginable.
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