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
CAS Registry Number	6359-98-4 N
ChemSpider	3490830 Y
InChI 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+ Y Key: DWYWPBYWDAZKNX-FMQUCBEESA-L Y 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+
Jmol-3D images	Image
PubChem	4284331
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+]
Properties
Chemical formula	C16H10Na2N4O7S2
Molar mass	551.29 g/mol
Hazards
S-phrases	S24 S25 S28A S37 S45
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
N verify (what is: Y/N?)
Infobox references

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

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

It is not listed by the UK's Food Standards Agency among EU approved food additives.^[1] Its use is also banned in Austria, Japan, Norway, Sweden, Switzerland and the United States.

References