N,N,N,N',N',N'-HEXAMETHYLHEXAMETHYLENEDIAMMONIUM DIHYDROXIDE HEXAMETHIONIUM HYDROXIDE hexamethionium hydroxide solution Hexamethonium hydroxide solution HEXAMETHONIUM HYDROXIDE SOLUTION, ~0.1 M IN WATER solution,0.1minwater Hexamethonium hydroxide solution ~0.1 M in H2O Hexamethonium Hydroxide