We have an inquiry for Ethylene. Ethylene glycol (monoethylene glycol (MEG), 1,2-ethanediol, IUPAC name: Ethane-1,2-diol) is an alcohol with two -OH groups (a diol), a chemical compound widely used as an automotive antifreeze. In its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste.