An organic chemical compound formed by the union of an azo group (-N=N-) with toluene, used historically in dye manufacturing.
From 'azo' (containing -N=N-) + 'toluene' (aromatic hydrocarbon from tolu balsam). Combines two chemical building blocks into a named synthetic compound.
Azotoluene was one of the first synthetic dyes created in the 1800s, launching the modern chemical industry and making bright, permanent colors available to everyone instead of just the wealthy.
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