Citrus Red 2

Citrus Red 2
IUPAC name

1-(2,5-Dimethoxy-phenylazo)-naphthalen-2-ol
Other names

Citrus Red No. 2, C.I. Solvent Red 80, C.I. 12156, E121
Identifiers
CAS number 6358-53-8 Y
PubChem 9570225
ChemSpider 16735746 Y
KEGG C19214 Y
Jmol-3D images Image 1
Properties
Molecular formula C18H16N2O3
Molar mass 308.33 g mol−1
Appearance Orange to yellow solid or a dark red powder
Melting point

156 °C, 429 K, 313 °F
Solubility in water Insoluble
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 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 is permitted by Food and Drug Administration (FDA) since 1956 only for use in the United States to color the skin of oranges.[1][2][3][4] Citrus Red 2 is listed as an IARC Group 2B carcinogen, meaning that it is "possibly carcinogenic to humans".[5] However, it does not penetrate the orange peel into the pulp.

Properties

Citrus Red 2 is an orange to yellow solid or a dark red powder with a melting point of 156 °C. It is not water-soluble, but readily soluble in many organic solvents.

References

  1. ^ Anonymous. 1988. Florida Citrus Fruit Laws. Florida Statutes. 601.
  2. ^ Code of Federal regulations Title 21 Part 74.302 (21 CFR 74.302)
  3. ^ Hall, David J (1989). "Peel Disorders of Florida Citrus as Related to Growing Area and Color-add formulations". Proc. Fla. State Hort. Soc. 102: 243–246. 
  4. ^ Hall, David J. and David Sorenson. 2006. Washing, Waxing, and Color-Adding. (Chapter 15 In: Fresh Citrus Fruits, Second Edition. Wilfred F. Wardowski, William M. Miller, David J. Hall and William Grierson, Eds.) Florida Science Source. Longboat Key, Florida.
  5. ^ Agents Classified by the IARC Monographs, IARC