Erythrosine
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| Erythrosine | |
|---|---|
| Image:Erythrosine.svg | |
| IUPAC name | 2-(6-hydroxy-2,4,5,7-tetraiodo- 3-oxo-xanthen-9-yl)benzoic acid |
| Identifiers | |
| CAS number | |
| SMILES | C1=CC=C(C(=C1)C2=C3C=C(C(=O) C(=C3OC4=C(C(=C(C=C24)I)O)I)I)I)C(=O)O |
| Properties | |
| Molecular formula | C20H6I4Na2O5 |
| Molar mass | 879.86 g/mol |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references | |
Erythrosine (Tetraiodofluorescein) is a cherry-pink coal-based fluorone food dye. Its maximum absorbance is at 530 nm[1] in an aqueous solution, and it is subject to photodegradation[citation needed].
Contents |
Classification
It is listed under the following number systems:
- FD&C Red No. 3
- E number E127 (Food Red 14)
- Color Index no. 45430 (Acid Red 51)
- Indian Standards No. 1697
Uses
Template:Not verified It is used as a food dye, in printing inks, as a biological stain, a dental plaque disclosing agent and a radiopaque medium. Although Red #3 has been highly implicated as a carcinogen[1], it is commonly used in sweets and foods marketed to children such as candies, popsicles, cake frosting,[citation needed] and cake-decorating gel.[1] Diamond Foods uses Red #3 to dye pecan shells red in its Blue Diamond line of mixed nuts for cosmetic reasons.[1] It is also used in strawberry Slim-Fast and its generic counterpart.[citation needed] McCormick uses it as well in their "Salad Toppins." Because of the well-known hazards of Red #3[1], Red #40 is much more commonly used by most food manufacturers in USA.[citation needed] Though in most of Europe and the rest of the world Red #3 is preferred over Red #40.[citation needed]
References
