Remarks:
Triethylene glycol is prepared commercially as a co-product of the oxidation of ethylene at high temperature, in the presence of a silver oxide catalyst. The ethylene oxide is then hydrated to yield mono, di, tri, and tetra ethylene glycols.
Triethylene glycol can be stored and transported in stainless steel, aluminium or lined tank cars, tank trucks, or 225 kg drums. It has a specific gravity of 1.125 and a flash point of 168 °C (closed cup) and is not classified for transport by road, sea, or rail.