Scarlet GN

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Scarlet GN
Kekulé, canonical skeletal formula of scarlet GN ((6E)-6-hydrazinylidene)
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
4548-53-2 (Z) N
ChemSpider 5020702 (Z) N
EC number 221-856-3
Jmol-3D images Image
PubChem 6537642 (Z)
5483118 (E)
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

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.

In the United States, it is not permitted as a food additive and may only be used in externally applied drugs and cosmetics.[1][2][3] An exception was added to allow the coloring of maraschino cherries, which then are considered mainly decorative and not a foodstuff.[4] In the European Union, it is not permitted as a food additive.[5]