3,3'-Dimethylbenzidine is a member of biphenyls.
3,3'-dimethylbenzidine appears as white to reddish crystals or crystalline powder or a light tan powder.
3,3’-Dimethylbenzidine is also known as o-Tolidine is a diacidic dye which is sparingly soluble in water and easily soluble in ether and alcohol. On exposure to chlorine or bromine vapors, it forms an intense blue color.