Yellow 2G

Yellow 2G
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 number	6359-98-4 Y
PubChem	4284331
ChemSpider	3490830 Y
Jmol-3D images	Image 1
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+]
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+
Properties
Molecular formula	C16H10Na2N4O7S2
Molar mass	551.29 g/mol
Hazards
S-phrases	S24 S25 S28A S37 S45
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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.^{[citation needed]} It is one of the colors that the Hyperactive Children's Support Group recommends be eliminated from the diet of children.^{[citation needed]}

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