Triethylene Glycol

Triethylene glycol TEG, or triglycol is a colorless odorless viscous liquid used as a plasticizer for vinyl. It is also used in air sanitizer products. When aerosolized it acts as a disinfectant.

Glycols are also used as liquid desiccants for natural gas and in air conditioning systems. It is an additive for hydraulic fluids and brake fluids.

Apart from its use as a raw material in the manufacture and synthesis of other products, TEG is known for its hygroscopic quality and its ability to dehumidify fluids. This liquid is miscible with water, and also 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 used by the oil and gas industry to "dehydrate" natural gas. It may also be used to dehydrate other gases. During this process, Triethylene glycol is placed into contact with natural gas, and strips the water out of the gas. It is heated to a high temperature and put through a condensing system, which removes the water as waste and reclaims the TEG for continuous reuse within the system.

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