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 CAS number is and its SMILES structure is O=C2c1ccccc1C(=O)c3c2cccc3NC. Its EINECS number is 201-417-2.
Disperse Red 9 is used in some older red and violet-red colored smoke formulations. It is used in the M18 colored smoke grenade and also often in dye packs. Its properties can be improved by coating the dye particles with an inert material, e.g. an epoxy resin.
Famous quotes containing the words disperse and/or red:
“Either disperse these mists, which blot and fill
My perspective, still, as they pass:
Or else remove me hence unto that hill
Where I shall need no glass.”
—Henry Vaughan (1622–1695)
“The poppy that my heart was,
formed to bind all mortals,
made to strike and gather hearts
like flame upon an altar,
fades and shrinks, a red leaf
drenched and torn in the cold rain.”
—Hilda Doolittle (1886–1961)