Aniline Black

Nigraniline. CH. N2HCl. It is produced upon the fiber by a solution in water of aniline hydrochloride, pota ium chlorate, copper sulphocyanide, and ammonium chloride. After dyeing the goods are run through an alkaline bath. Ammonium vanadate is substituted for the copper salt. larvæ as stages in their development. The term is a popular one, and has no meaning in cla ification.