Triethylene Glycol (TEG)

Triethylene glycol (TEG) is a colorless, viscous liquid with a slight odor. It is non-flammable, mildly toxic, and considered non-hazardous. TEG is a member of a homologous series of dihydroxy alcohols. It is used as a plasticizer for vinyl polymers as well as in the manufacture of air sanitizer and other consumer products.


Triethylene Glycol (TEG) is a liquid chemical compound with the molecular formula C6H14O4 or HOCH2CH2CH2O2CH2OH. Its CAS is 112-27-6. TEG is recognized for its hygroscopic quality and ability to dehumidify fluids. It is miscible with water and soluble in ethanol, acetone, acetic acid, glycerine, pyridine, and aldehydes. It is slightly soluble in diethyl ether, and insoluble in oil, fat, and most hydrocarbons.

TEG is commercially produced as a co-product of the oxidation of ethylene at a high temperature in the presence of silver oxide catalyst, followed by hydration of ethylene oxide to yield mono, di, tri, and tetraethylene glycols.

The oil and gas industries use TEG to dehydrate natural gas as well as other gases including CO2, H2S, and other oxygenated gases. Industrial uses include adsorbents and absorbents, functional fluids in both closed and open systems, Intermediates, petroleum production processing aids, and solvents. TEG is used in the manufacture of a host of consumer products that include anti-freeze, automotive care products, building and construction materials, cleaning and furnishing care products, fabric, textile, and leather products, fuels and related products, lubricants and greases, paints and coatings, personal care products, and plastic and rubber products.


Triethylene Glycol is available for shipping throughout the continental United States with one (1) week lead time. Triethylene glycol is a clear liquid shipped in bulk, special packaging is available on request.

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