Amaranth Properties, Molecular Formula, Applications - WorldOfChemicals

Amaranth Properties


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Molecule Structure Image



Amaranth is a dark red to purple azo dye used as a food dye and to color cosmetics. The name was taken from amaranth grain, a plant distinguished by its red color and edible protein-rich seeds. Amaranth is an anionic dye. It can be applied to natural and synthetic fibers, leather, paper, and phenol-formaldehyde resins. As a food additive it has E number E123. Amaranth usually comes as a trisodium salt. It has the appearance of reddish-brown, dark red to purple water-soluble powder that decomposes at 120 °C without melting. Amaranths water solution has absorption maximum at about 520 nm.

Chemical Properties

Appearance Dark red to purple powder
CAS Number 915-67-3
Density 1.5g/cm3
HS Code 3204.12
IUPAC Name trisodium (4E)-3-oxo-4-[(4-sulfonatonaphthalen-
Lab Grade LR
Molar Mass 604.46 g/mol
Molecular Formula C20H11N2Na3O10S3
NFPA 704 H-2,F-1,R-0,C-NA
Solubility 50 g/l
Synonyms 2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[(4-sulfo-1-naphthalenyl)azo]-, trisodium salt (9CI);Bordeaux S (6CI);C.I. Acid Red 27 (7CI);C.I. Acid Red 27, trisodium salt(8CI);1-(4-Sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid trisodium salt;1302 Red;1508 Red;2-Hydroxy-1,1'-azonaphthalene-3,6,4'-trisulfonic acidtrisodium salt;Acid Amaranth;Acid Amaranth I;Acid Amaranth J;Acid Amaranth N;Acid Leather Red I 2BW;Acid Leather Rubine S;Acid Red 27;Aizen Amaranth;Amacid Amaranth;Amaranth;Amaranth (dye);Amaranth 307018;Amaranth 36010;Amaranth 85;Amaranth A;Amaranth B;Amaranth BPC;Amaranth Extra;Amaranth Lake;Amaranth R;Amaranth S;Amaranth S Specially Pure;Amaranth USP