30607-77-3 68441-22-5 68953-73-1 Dimethyl polyethylenimine sulfate Polyethyleneimine, dimethyl sulfate quarternary salt Polyethyleneimine, dimethylsulfate polymer Polyethylenimine methosulfate quaternary Sulfuric acid, dimethyl ester, compd. with aziridine homopolymer