NCIt synonyms : ortho-Dianisidine; Naphthanil Blue B Base; Bianisidine; Fast Blue B Base; 4,4'-Diamino-3,3'-dimethoxybiphenyl; 3,3'-Dimethoxybenzidine;
NCIt definition : A colorless, highly toxic, crystalline compound that turns violet when exposed to
air. Dianisidine is used exclusively as an intermediate for the production of dyes
and pigments. Exposure to this substance causes skin irritation and sensitization.
Dianisidine is reasonably anticipated to be a human carcinogen based on evidence of
carcinogenicity in experimental animals. (NCI05);