D 2009 (OTTO) Dimethylbenzylamine, 98%+ Cas 103-83-3 - used to synthesize quaternary ammonium salts to produce cationic surface active strong fungicides; D 2009 (OTTO) Dimethylbenzylamine, 98%+ Cas 103-83-3 - used to promote curing systems such as anhydrides, polyamides, and fatty amines, and accelerates product curing.