logo
Banner

Azorubine

Catalog Number DYE-AFC-0007
CAS Number 3567-69-9
Structure
Description Azorubine is an azo dye consisting of two naphthalene subunits. It is a red solid. It is mainly used in foods that are heat-treated after fermentation.
Synonyms Carmoisine, Food Red 3, Azorubin S, Brillantcarmoisin O, Acid Red 14, C.I. 14720
IUPAC Name Disodium 4-hydroxy-2-[(E)-(4-sulfonato-1-naphthyl)diazenyl]naphthalene-1-sulfonate
Molecular Weight 502.44
Molecular Formula C20H12N2Na2O7S2
Canonical SMILES c1ccc2c(c1)c(ccc2S(=O)(=O)[O-])/N=N/c3cc(c4ccccc4c3O)S(=O)(=O)[O-].[Na+].[Na+]
InChI 1/C20H14N2O7S2.2Na/c23-20-15-8-4-3-7-14(15)19(31(27,28)29)11-17(20)22-21-16-9-10-18(30(24,25)26)13-6-2-1-5-12(13)16;;/h1-11,23H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b22-21+;;
InChI Key YSVBPNGJESBVRM-DGPRXMBVBS
Melting Point >300 °C (572 °F)
Solubility 120g/L in water.
Appearance Red powder
Application In the European Union, Azorubin is authorized for use in certain foods and beverages, such as cheese, dried fruits, and some alcoholic beverages, and is allowed to be used as an excipient in medicines.
CI Number C.I. 14720
EC Number 217-699-5
E Number E122

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

Online Inquiry
Verification code