1,3-Benzenediamine, 4-propoxy-, dihydrochloride (9CI) 2,4-Diamino-n-propoxybenzene dihydrochloride 37878-54-9 4-Propoxy-1,3-benzenediamine dihydrochloride 76486-08-3 m-Phenylenediamine, 4-propoxy-, dihydrochloride