Fast Yellow AB

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Fast Yellow AB
IUPAC name 2-amino-5-[(E)-(4-sulfophenyl)diazenyl]- benzenesulfonic acid
Identifiers
CAS number [2706-28-7]
SMILES Nc1ccc(cc1OS(O)=O)/N=N/c2ccc(OS(O)=O)cc2
Properties
Molecular formula C12H11N3O6S2
Molar mass 357.36
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Fast Yellow AB, Fast Yellow, Acid Yellow, C.I. 13015, C.I. 14270 or Food Yellow 2 is an azo dye denoted by E number E105. It is used as a food dye. It is now delisted in both Europe and USA and is forbidden if used in foods and drinks, as toxicological data has shown it is harmful.