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.