Yellow 2G

Yellow 2G

Chembox new
ImageFile = Yellow 2G sodium.png ImageSize = 200px
IUPACName = Disodium 2,5-dichloro-4- [3-methyl-5-oxo-4-(4-sulfonatophenyl)diazenyl-4H-pyrazol-1-yl] benzenesulfonate
OtherNames = Lissamine Fast Yellow
C.I. Acid Yellow 17 C.I. 18965
Section1 = Chembox Identifiers
CASNo = 6359-98-4
PubChem = 22842
SMILES = 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+]
Section2 = Chembox Properties
Formula = C16H10Cl2Na2N4O7S2
MolarMass = 551.29 g/mol
Appearance =
Density =
MeltingPt =
BoilingPt =
Solubility =
Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =
RPhrases =
SPhrases = S24 S25 S28A S37 S45

Yellow 2G is a colourant in food denoted by E number E107. It has the appearance of a yellow powder, soluble in water. It is a synthetic "coal tar" and yellow azo dye.

It appears to cause allergic or anal rash reactions, particularly amongst those with an aspirin intolerance and asthma sufferers. It is one of the colours that the Hyperactive Children's Support Group recommends be eliminated from the diet of children.

Currently only the UK in the European Union uses this dye and the EU is proposing a total ban. Its use is banned in Austria, Japan, Norway, Sweden, Switzerland and the United States.


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