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Triethylene glycol (TEG)

Characteristics
Triethylene glycol is obtained in the reaction of ethylene oxide hydration as a by-product of the monoethylene glycol (MEG) synthesis. It is then separated and purified in the rectification process. TEG produced at PKN Orlen shows over 90% pure Triethylene Glycol content. 

Application
As a reagent in production of polyester resins; also used as an industrial solvent, gas drying and humidity stabilising agent.

Properties

Physical appearance colourless, clear liquid, practically with no odour.
Molar mass 150.18
Boiling point 287.3°C
Freezing point -7°C
Density at 20°C/20°C 1.123
Viscosity at 20°C 49 cP
Solubility  
in water – unlimited; also dissolves readily in other alcohols, ketones and aldehydes.
in aliphatic hydrocarbons – very poor. 

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