Is 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide] (CI 21090) vegan?

Pigment Yellow 12 is also known as 2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide] (CI 21090).

Pigment Yellow 12 is a synthetic diarylide azo pigment derived from 3,3'-dichlorobenzidine, widely used as a yellow colorant.

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