Diethylene glycol monobutyl ether  is used as a solvent for nitrocellulose, varnish, printing ink, oil, resin, etc. and as an intermediate for synthetic plastics

Diethylene glycol monobutyl ether is mainly used as a solvent for coatings, dyes, resins, etc. It is also used as an intermediate for plasticizers and as a diluent for hydraulic brake fluids. It is also used to produce piperonyl butoxy compounds.