Pigment Orange 13

It is a commercial orange pigment.

It is also classified as a diarylide pigment, being derived from 3,3'-dichlorobenzidine.

It is closely related to Pigment Orange 34, wherein the two phenyl groups are replaced by p-tolyl groups.

[1] Its structure has been confirmed by X-ray crystallography.

[2] Pigment Orange 13 is a popular component of artist's paints[3] and tattoo inks.