1,6-Hexanediaminium, N,N'-didecyl-N,N,N',N'-tetramethyl-, dibromide 18699-36-0 21949-05-3 30100-43-7 BDDHD N,N'-Bis(decyldimethyl)-1,6-hexanediammonium N,N'-Bis(decyldimethyl)-1,6-hexanediammonium dibromide