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:
“Let me have
A dram of poison, such soon-speeding gear
As will disperse itself through all the veins
That the life-weary taker may fall dead,
And that the trunk may be discharged of breath
As violently as hasty powder fired
Doth hurry from the fatal cannon’s womb.”
—William Shakespeare (1564–1616)
“The air is precious to the red man, for all things share the same breath—the beast, the tree, the man, they all share the same breath. The white man does not seem to notice the air he breathes. Like a man dying for many days, he is numb to the stench.”
—Attributed to Seattle (c. 1784–1866)