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B 2248 (OTTO) 1,2-Bis(2-chloroethoxy)ethane, 97% Cas 112-26-5 - used in the synthesis of 1,1′-[1,2-ethanediylbis(oxy-1,2-ethanediyl)]bis[3-methyl-1H-imidazolium-1-yl] chloride.