Fast Yellow AB

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Fast Yellow AB
Skeletal formula of Fast Yellow AB
Ball-and-stick model of the Fast Yellow AB molecule
IUPAC name
2-amino-5-[(E)-(4-sulfophenyl)diazenyl]benzenesulfonic acid
Other names
Fast Yellow
Acid Yellow
Food Yellow 2
C.I. 13015
3D model (JSmol)
ECHA InfoCard 100.018.448
E number E105 (colours)
Molar mass 357.36
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Fast Yellow AB is an azo dye. It used to be used as a food dye, designated in Europe by the E number E105. 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. E105 has been implicated in non-atopic asthma.[1]