Diethylene glycol is used in the manufacture of unsaturated polyester resins, polyurethanes, and plasticizers.
It is a solvent for nitrocellulose, resin, dyes, oils, and other organic compounds.
It is a humectant for tobaccos, corks, printing inks, and glues.
It is also a component in brake fluids, lubricants, wallpapers, haze solutions, and heating/cooking fuels.