Ethylenglykol

Ethylene glycol, or ethane-1,2-diol, is a colorless, viscous liquid with the formula C2H6O2. It is miscible with water and has a faint sweet odor. It is widely used as an automotive antifreeze and as a raw material in the production of polyesters.

Ethylene glycol is produced by the catalytic hydration of ethylene oxide, itself derived from ethylene. It is a diol, possessing two hydroxyl groups, which gives it high boiling point and hygroscopicity.

Major uses include antifreeze and heat-transfer fluids; de-icing solutions; raw material for polyethylene terephthalate (PET) and other polyesters via reaction with diacids; solvent in some industrial applications; hydraulic fluids.

Ethylene glycol is toxic if ingested; symptoms include CNS depression, metabolic acidosis, and kidney damage. Treatment may include fomepizole or ethanol, supportive care, and possibly dialysis in severe cases. It is moderately toxic to aquatic life; spills require containment and cleanup.