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Ethylene polyclycols

Characteristics
Polyethylene glycols are obtained as a result of mixing unpurified fractions formed during the process of ethylene glycols production. The mixture contains chiefly diethylene and triethylene glycol (DEG and TEG). PEG can also contain mechanical and mineral impurities (salts). 

Applications
As a precursor for making anti-freezing preparations, and for increasing viscosity of specialised liquids. It is used particularly when the purity of glycol is not of special importance. 

Properties

Appearance liquid of yellow to brown tint; practically odourless.
Boiling point > 180°C
Freezing point approx. -20°C
Density at 20°C/20°C 1.12-1.17
Solubility   
in water – unlimited, dissolves readily in other alcohols, ketones and aldehydes.
in aliphatic hydrocarbons – very poor.

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