Scarlet GN
Scarlet GN, or C.I. Food Red 1, Ponceau SX, FD&C Red No. 4, or C.I. 14700 is a red azo dye once used as a food dye. As a food additive, it has the E number E125. It usually used as a disodium salt.
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| Names | |
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| Systematic IUPAC name
Disodium 3-[(2,4-Dimethyl-5-sulfonatophenyl)hydrazinylidene]-4-oxonaphthalene-1-sulfonate | |
| Other names
Crimson 4R; C.I. Food Red 1; Food red 1; FD & C Red no. 4; Hexacol Ponceau SX; Maple Ponceau SX; Ponceau SX; Purple 4R; E125 | |
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider |
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| ECHA InfoCard | 100.019.870  |
| EC Number |
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| E number | E125 (colours) |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C18H14N2Na2O7S2 | |
| Molar mass | 480.42 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
In the United States, it is not permitted for use in food or ingested drugs and may only be used in externally applied drugs and cosmetics.[1][2][3] An exception was added in 1965 to allow its use in the coloring of maraschino cherries, which were considered mainly decorative and not a foodstuff.[4] This exception was repealed in 1976 due to mounting safety concerns. In the European Union, it is not permitted as a food additive.[5]
References
- 21 CFR 81.10
- 21 CFR 81.30
- 21 CFR 82.304
- Pavia, Donald L. (2005). Introduction to Organic Laboratory Techniques: A Small Scale Approach (2nd ed.). pp. 387–389. ISBN 0534408338. Retrieved January 25, 2013.
- Current EU approved additives and their E Numbers, Food Standards Agency
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