Propylene Glycol - Welcome to the propylene glycol website. Diethylene glycol. Diethylene glycol (DEG) is an organic compound with the formula (HOCH2CH2)2O.
It is a colorless, practically odorless, poisonous, and hygroscopic liquid with a sweetish taste. It is miscible in water, alcohol, ether, acetone, and ethylene glycol.[1] DEG is a widely used solvent.[2] It can be a contaminant in consumer products; this has resulted in numerous epidemics of poisoning since the early 20th century.[1] Diethylene glycol poisoning. [Clin Toxicol (Phila). 2009.