What is "aniline yellow"

n. A yellow azo dye, ''4-phenyldiazenylaniline''

Aniline Yellow is a yellow azo dye and an aromatic amine. It is a derivate of azobenzene. It has the appearance of an orange powder. Aniline Yellow was the first azo dye. it was first produced in 1861 by C. Mene. The second azo dye was Bismarck Brown in 1863. Aniline Yellow was commercialized in 1864 as the first commercial azo dye, a year after Aniline Black. It is manufactured from aniline.