Abstract: An improved process for preparing mono- and poly-glycol ethers by mixing and reacting an alkylene oxide and an alcohol in the presence of a catalyst containing alkali or alkaline earth cations at temperatures within the range of about 50.degree.to about 350.degree.C. under pressure of between about 30 to about 3,000 psig is disclosed. An anhydrous high boiling liquid residue, prepared by the concentration of the liquid reaction product effluent residue remaining after desired mono- and poly-glycol ethers have been separated therefrom has been found to be highly useful as the catalyst for the described process. The employment of the anhydrous high boiling liquid residue as a catalyst advantageously results in the production of liquid reaction product effluents containing relatively little, if any, undesirable glycol by-products which are difficult to separate from the desired mono- and poly-glycol ethers.