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carmoisine
Sign in to saveAlso known as Azorubin S, C.I. 14720, Azorubin, Brillantcarmoisin O, Food Red 3, Azorubine, C.I. Acid Red 14, Acid Red 14
Azorubine, also known as carmoisine, 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. It has E number E122.
Chemical data
- Formula
- C20H12N2Na2O7S2
- Molecular weight
- 502.4 g/mol
- IUPAC name
- disodium;4-hydroxy-3-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
- SMILES
- C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C(C4=CC=CC=C4C(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]
- InChIKey
- YSVBPNGJESBVRM-UHFFFAOYSA-L
- Polar surface area
- 176 Ų
- H-bond donors
- 1
- H-bond acceptors
- 9
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- chemical compound
- Has part
- carbon
- Mass
- 501.988131284
- Has use
- food coloring
Show 4 more facts
- chemical formula
- C₂₀H₁₂N₂Na₂O₇S₂
- canonical SMILES
- C1=CC=C2C(=C1)C(=CC=C2S([O-])(=O)=O)N=NC=3C=C(C4=CC=CC=C4C3[O-])S(O)(=O)=O.[Na+].[Na+]
- Commons category
- Azorubine
- isomeric SMILES
- O=S(=O)([O-])c1ccc(/N=N/c2cc(S(=O)(=O)O)c3ccccc3c2[O-])c2ccccc12.[Na+].[Na+]
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
3 sectionsContents
- Uses
- Safety
- References
Azorubine, also known as carmoisine, 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. It has E number E122.
==Uses== In the US, this color was listed in 1939 as Ext. D&C Red No. 10 for use in externally applied drugs and cosmetics. It was delisted in 1963 because no party was interested in supporting the studies needed to establish safety. It was not used in food in the US.
Excerpted from Wikipedia’s “carmoisine” article, available under the CC BY-SA 4.0 licence.