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 Number	6359-98-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:90206 ;
ChemSpider	3490830 ;
ECHA InfoCard	100.026.199
E number	E107 (colours)
PubChem CID	4284331;
UNII	Y428W9WW4D ;
CompTox Dashboard (EPA)	DTXSID6041719 ;
	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+ Key: DWYWPBYWDAZKNX-FMQUCBEESA-L ; 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;
	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	C16H10N4Na2O7S2
Molar mass	480.38 g·mol−1
Hazards
S-phrases (outdated)	S24 S25 S28A S37 S45
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Yellow 2G is a food coloring denoted by E number E107 with the Colour 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.^[1] Its use is also banned in Austria, Japan, Norway, Sweden, Switzerland and the United States.

References

^ Current EU approved additives and their E Numbers, Food Standards Agency, 26 November 2010

External links

Media related to Yellow 2G at Wikimedia Commons

[1] Current EU approved additives and their E Numbers, Food Standards Agency, 26 November 2010

[1]

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 Number	6359-98-4
3D model (JSmol)	Interactive image
ChEBI	CHEBI:90206
ChemSpider	3490830
ECHA InfoCard	100.026.199
E number	E107 (colours)
PubChem CID	4284331
UNII	Y428W9WW4D
CompTox Dashboard (EPA)	DTXSID6041719
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+ Key: DWYWPBYWDAZKNX-FMQUCBEESA-L 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
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	C₁₆H₁₀N₄Na₂O₇S₂
Molar mass	480.38 g·mol⁻¹
Hazards
S-phrases (outdated)	S24 S25 S28A S37 S45
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).