Diethylene glycol (DEG)

Characteristics
Diethylene glycol is obtained in the reaction of ethylene oxide hydration as a byproduct of the monoethylene glycol (MEG) synthesis. It is then separated and purified in the rectification process. DEG produced at PKN Orlen shows high degree of purity (>99.7%).

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 106.12
boiling point 244.3°C
freezing point -8°C
density at 20°C/20°C 1.118
viscosity at 20°C 38 cP
solubility  
in water – unlimited; also dissolves readily in other alcohols, ketones and aldehydes.
in aliphatic hydrocarbons – very poor.
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