Mono Ethylene Glycol (C2H6O2) is a colorless, odorless, viscous dihydroxy alcohol. It has a sweet taste, but is poisonous if ingested. Ethylene glycol is the most important glycol commercially available and is
Propylene glycol (C3H8O2) is a clear, colorless and liquid. usually a tasteless, odorless, and colorless clear oily liquid that is hygroscopic and miscible It is manufactured by the hydration of propylene oxide.