Ethylene Glycol (EG) is an organic chemical compound that is colorless, odorless, sweet-tasting, and has relatively high viscosity. Its chemical formula is C₂H₆O₂ (HO-CH₂-CH₂-OH). It is one of the most important products of the petrochemical industry and, due to its low freezing point and high boiling point, is widely used across a broad range of industrial applications.