Amaranth (dye)

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Amaranth dye


A dark, reddish-purple synthetic dye. Amaranth was developed in 1878 by H. Baum. It is a water soluble Azo dye derived from Coal tar. Amaranth is a nonpermanent color used as a colorant in textiles and color photography. It was banned by the FDA in 1976 for use in food and cosmetics.

Synonyms and Related Terms

FD&C Red No. 2; Red Dye No. 2; CI 16185; Acid Red 27; Food Red 9; Ariabel Red 18.42; Pigment Red 193 (on aluminum); amarantti (Fin.); amarant (Ned.); amarante (Fr.); amaranto (Esp.); amaranto (It.)

Chemical structure

Amaranth (dye).jpg


Suspected carcinogen.

Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in water, glycerol, propylene glycol. Insoluble in most organic solvents.

Composition C20H11N2Na3O10S3
CAS 915-67-3
Density 1.5
Molecular Weight mol. wt. = 604.46

Resources and Citations

  • Colour Index International online at Comment: discoverer
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 391
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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