Diethylene glycol butyl ether (2-(2-butoxyethoxy)ethanol) is the organic compound with the formula C4H9OC2H4OC2H4OH.
A colorless liquid, it is common industrial solvent.
It has low odour and high boiling point.
It is mainly used as a solvent for paints and varnishes in the chemical industry, household detergents, and textile processing.
:[1][2] Diethylene glycol monobutyl ether (DEGBE) is produced from butanol by ethoxylation, i.e., the reaction of ethylene oxide in the presence of a basic catalyst.