Triethylen glycol (TEG)  is a viscous and colorless compound and has the ability to absorb moisture from the surrounding materials. TEG is a liquid solvent and is known for its hygroscopic properties and ability to absorb moisture from liquids. This material as a common product of high temperature ethylene oxidation in the presence of silver oxide catalyst and then EO hydration is obtained from the ethylene glycol family to obtain mono, di and tri. This substance is from a series of dihydro homologues of alcohols. Due to its lower volatility and higher boiling point than monoethylene glycol (MEG) and diethylene glycol, it is widely used in dehumidification of natural gas. Triethylene glycol (TEG)  is soluble in acetic acid, alcohols, glycerin and aldehydes, but in diethyl ether. Soluble in small amounts. TEG is insoluble in fats, oils and most hydrocarbons.