1,4-Diamino-2,3-dihydroanthraquinone is an anthraquinone dye used with Disperse Red 9 in colored smoke to introduce a violet color.

It is also used in dyes and marine flares.

1,4-Diaminoanthraquinone is reacted with sodium dithionite to produce 1,4-diamino-2,3-dihydroanthraquinone.

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