Citrus Red 2

Title: Citrus Red 2
CAS Registry Number: 6358-53-8
CAS Name: 1-[(2,5-Dimethoxyphenyl)azo]-2-naphthalenol
Additional Names: C.I. Solvent Red 80; C.I. 12156
Molecular Formula: C18H16N2O3
Molecular Weight: 308.33
Percent Composition: C 70.12%, H 5.23%, N 9.09%, O 15.57%
Literature References: Prepn: H. W. Elley, H. W. Daudt, US 2224904 (1940 to Du Pont). Metabolism: J. L. Radomski, J. Pharmacol. Exp. Ther. 134, 100 (1961); 136, 378 (1962). Toxicology: M. Sharratt et al., Food Cosmet. Toxicol. 4, 493 (1966). Review of carcinogenicity studies: IARC Monographs 8, 101-106. See also Colour Index vol. 4 (3rd ed., 1971) p 4033.
Properties: Crystals, mp 155-157°. Slightly sol in water; partially sol in ethanol and vegetable oils.
Melting point: mp 155-157°
Use: To color orange skins.
Cizolirtine Clanobutin Clarase? Clarithromycin Clathrates

Citrus Red 2
Citrus Red 2.png
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CAS number 6358-53-8 YesY
PubChem 9570225
ChemSpider 16735746 YesY
KEGG C19214 YesY
Jmol-3D images Image 1
Molecular formula C18H16N2O3
Molar mass 308.33 g mol−1
Appearance Orange to yellow solid or a dark red powder
Melting point 156 °C; 313 °F; 429 K
Solubility in water Insoluble
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Citrus Red 2, Citrus Red No. 2, C.I. Solvent Red 80, or C.I. 12156 is an artificial dye. As a food dye, it has been permitted by the US Food and Drug Administration (FDA) since 1956 to color the skin of oranges.[1][2][3][4] Citrus Red 2 is listed by the International Agency for Research on Cancer (IARC) as a group 2B carcinogen, a substance "possibly carcinogenic to humans".[5]