1,3-Propanediaminium, N,N,N,N',N',N'-hexamethyl-2-((2-methyl-1-oxo-2-propenyl)oxy)-, bis(methyl sulfate) 52828-97-4 EINECS 258-206-3 N,N,N,N',N',N'-Hexamethyl-N,N'-(2-(methacryloyloxy)propane-1,3-diyl)diammonium S,S'-dimethyl disulphate