What is triethylene glycol (TEG)

Triethylene glycol is an odorless, colorless liquid also known as triglycol or TEG. Its chemical formula is C6H14O4, and its CAS number is 112-27-6. It has a high viscosity and boiling point, as well as a number of unique properties that are used in manufacturing and industry.

Triethylene glycol is a type of dihydroxy alcohol. It is viscous and miscible with water. Its molar mass is 150.17 g·mol−1. It has a 1.1255 g/mL density, a boiling point of 545 degrees Fahrenheit (285°C), and a melting point of 19°F (-7°C). Production of triethylene glycol involves oxidizing ethylene at high temperatures using a silver oxide catalyst. This process produces ethylene oxide, which is refined to produce mono-, di-, or triethylene glycol.

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Uses and Applications for triethylene glycol

Smoke machines, hydraulic fluids, and brake fluids also use triethylene glycol (TEG).

Gas station pumps

Oil & Gas

Natural gas refineries use TEG to dehydrate natural gas, among other substances. Doing so helps prevent pipeline damage due to freezing and other issues that can affect the quality of the product when it reaches its end user.

Steel foundation of construction building


TEG is a common plasticizer used to improve the flexibility of vinyl polymers. Its low color and low volatility make it suitable for use in flooring, automotive safety glass, and residential and commercial windows.

Cleaning bucket and supplies


TEG has natural antimicrobial properties that, combined with its low odor and low toxicity, make it a useful component of air sanitizers and other home products. TEG is effective against airborne, solution-suspended, and surface-bound microbes such as E. coli., pneumococcus, and influenza A, among other pathogens.


If you are looking for a convenient source of TEG or other industrial chemicals, Brenntag North America can help. Our catalog consists of more than 10,000 items. We are a longstanding partner to industries like oil and gas, personal care, food and beverage, and many more. Our network of 190 distribution centers makes us an ideal partner to customers anywhere in Canada or the United States.


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