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Scarlet GN

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Scarlet GN
Kekulé, canonical skeletal formula of scarlet GN ((6E)-6-hydrazinylidene)
Kekulé, canonical skeletal formula of scarlet GN ((6E)-6-hydrazinylidene)
Names
Preferred IUPAC name Disodium 3--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 Lake 4R purple

Purple 4R
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.019.870 Edit this at Wikidata
EC Number
  • 221-856-3
E number E125 (colours)
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C18H16N2O7S2.2Na/c1-10-8-11(2)17(16(9-10)29(25,26)27)20-19-14-7-6-12-13(18(14)21)4-3-5-15(12)28(22,23)24;;/h3-9,20H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2/b19-14-;;Key: AQJHOKDCKYSJAS-MHZTUVSFSA-L
SMILES
  • Cc1cc(C)c(NN=c2ccc3c(cccc3c2=O)S(=O)(=O)O)c(c1)S(=O)(=O)O
  • CC1=CC(=C(NN=C2C=CC3=C(C=CC=C3C2=O)S(=O)(=O)O)C(C)=C1)S(=O)(=O)O
Properties
Chemical formula Na
2C
18H
14N
2S
2O
7
Molar mass 480.422 g mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Scarlet GN, or C.I. Food Red 1, Ponceau SX, FD&C Red No. 4, or C.I. 14700 is a red azo dye used as a food dye. When used as a food additive, it has the E number E125. It usually comes as a disodium salt.

It is permitted in fruit peels and maraschino cherries.

  • CFR - Code of Federal Regulations Title 21:

References

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