1,4-Diamino-2,3-dihydroanthraquinone
Encyclopedia
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 dye
s and marine flare
s.
to produce 1,4-diamino-2,3-dihydroanthraquinone.
Disperse Red 9
Disperse Red 9, also called C.I. 60505 and 1-methylamino anthraquinone, is a red dye derived from anthraquinone. It has the appearance of a red powder with melting point of 170-172 °C. Its EINECS number is 201-417-2....
in colored smoke
Colored smoke
Colored smoke is a kind of smoke created by an aerosol of small particles of a suitable pigment or dye.Colored smoke can be used for smoke signals, often in a military context. It can be produced by smoke grenades, or by various other pyrotechnical devices...
to introduce a violet color. It is also used in dye
Dye
A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber....
s and marine flare
Flare (pyrotechnic)
A flare, also sometimes called a fusee, is a type of pyrotechnic that produces a brilliant light or intense heat without an explosion. Flares are used for signalling, illumination, or defensive countermeasures in civilian and military applications...
s.
synthesis
1,4-Diaminoanthraquinone is reacted with sodium dithioniteSodium dithionite
Sodium dithionite is a white crystalline powder with a weak sulfurous odor. It is a sodium salt of dithionous acid. Although it is stable under most conditions, it will decompose in hot water and in acid solutions...
to produce 1,4-diamino-2,3-dihydroanthraquinone.