logo
Banner

Amaranth (dye)

Catalog Number DYE-AFC-0008
CAS Number 915-67-3
Structure
Description Amaranth (dye) is an anionic dye, usually in the form of the trisodium salt. It is a reddish brown, dark red to purple water-soluble powder that decomposes without melting at 120°C. The maximum absorption wavelength of its aqueous solution is about 520 nm.
Synonyms Red NO. 2, E123, C.I. Food Red 9, Acid Red 27, Azorubin S, or C.I. 16185
IUPAC Name Trisodium (4E)-3-oxo-4-[(4-sulfonate-1-naphthyl)hydrazono]naphthalene-2,7-disulfonate
Molecular Weight 604.47305
Molecular Formula C20H11N2Na3O10S3
Canonical SMILES [Na+].[Na+].[Na+].[O-]S(=O)(=O)c4ccc(N=Nc1c2ccc(cc2cc(c1O)S([O-])(=O)=O)S([O-])(=O)=O)c3ccccc34
InChI 1S/C20H14N2O10S3.3Na/c23-20-18(35(30,31)32)10-11-9-12(33(24,25)26)5-6-13(11)19(20)22-21-16-7-8-17(34(27,28)29)15-4-2-1-3-14(15)16;;;/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32);;;/q;3*+1/p-3
InChI Key WLDHEUZGFKACJH-UHFFFAOYSA-K
Melting Point 120 °C (248 °F; 393 K) (decomposes)
Appearance Dark red solid
Application In the UK, Amaranth (dye) is most commonly used to give Glacier Cherries their distinctive color.
CI Number C.I. 16185
EC Number 213-022-2
E Number E123

It is important to note that our products are for research use only and are not for clinical use.

Online Inquiry
Verification code