An organic base belonging to the phenylamines. It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colorless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made.
A Chemical dye, first produced in the 1860's and ubiquitous in the Middle East from the 1880's. Most frequently encountered in the red-blue-purple range, the substance being named after anil, the indigo plant. Colors are very fugitive; a bright orange-pink, for instance, will fade at the tip to walnut-brown.
A product of coal tar used in the manufacturing of artificial dyes.