7356-81-2 EINECS 230-888-7 GUANIDINE, HEXANEDI-, DIHYDROCHLORIDE Guanidine, N,N'''-1,6-hexanediylbis-, dihydrochloride (9CI) Hexamethylenediguanidine dihydrochloride Hexanediguanidine dihydrochloride N,N'''-1,6-Hexanediylbisguanidine dihydrochloride NSC 38328