Yellow 2G

Yellow 2G
Names
IUPAC name
Disodium 2,5-dichloro-4-[3-methyl-5-oxo-4-(4-sulfonatophenyl)diazenyl-4H-pyrazol-1-yl]benzenesulfonate
Other names
  • Lissamine Fast Yellow
  • C.I. Acid Yellow 17
  • C.I. 18965
  • Light Fast Yellow 2G
  • C.I. Food Yellow 5
  • Acid Leather Yellow 2GL
  • Erio Flavine SX
  • Fenalan Yellow G
  • Erio Flavine 3G
  • Kayacyl Yellow GG
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.026.199
E number E107 (colours)
UNII
  • InChI=1S/C16H12Cl2N4O7S2.2Na/c1-8-15(20-19-9-2-4-10(5-3-9)30(24,25)26)16(23)22(21-8)13-6-12(18)14(7-11(13)17)31(27,28)29;;/h2-7,15H,1H3,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2
    Key: FTZLWXQKVFFWLY-UHFFFAOYSA-L
  • acid: InChI=1S/C16H12Cl2N4O7S2/c1-8-15(20-19-9-2-4-10(5-3-9)30(24,25)26)16(23)22(21-8)13-6-12(18)14(7-11(13)17)31(27,28)29/h2-7,15H,1H3,(H,24,25,26)(H,27,28,29)/p-2/b20-19+
    Key: DWYWPBYWDAZKNX-FMQUCBEESA-L
  • CC1=NN(C(=O)C1N=NC2=CC=C(C=C2)S(=O)(=O)[O-])C3=CC(=C(C=C3Cl)S(=O)(=O)[O-])Cl.[Na+].[Na+]
Properties
C16H10N4Na2O7S2
Molar mass 480.38 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Yellow 2G is a food coloring denoted by E number E107 with the color index CI18965. It has the appearance of a yellow powder, and it is soluble in water. It is a synthetic yellow azo dye.

It is not listed by the UK's Food Standards Agency among EU approved food additives. Its use is also banned in Austria, Japan, Norway, Sweden, Switzerland and the United States.

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