D & C dyes

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An acronym for Drug and Cosmetic dyes. This classification for synthetic dyes is given by the U.S. Food and Drug Administration. D & C dyes can be used in drugs and cosmetics while a FD & C dyes can be used in food, drugs and cosmetics. This designation certifies that the dye does not contain toxic amounts of heavy metals. Examples are:

D&C Red No. 21 = Eosin;

D&C blue No. 6 = Indigo;

FD&C Red No. 2 = Amaranth.

Resources and Citations

  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942

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