T 0604 (OTTO) Triethylene glycol dimethyl ether, 99% Cas 112-49-2 - used as a solvent for gases and coupling immiscible liquid. T 0604 (OTTO) Triethylene glycol dimethyl ether, 99% Cas 112-49-2 used to prepare perfluoro-triethyleneglycoldimethylether.