Fast Yellow AB
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Fast Yellow AB | |
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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.