Gamma-Butyrolactone (GBL) is a hygroscopic colorless liquid with a weak characteristic odor. Soluble in h2o, GBL is a common solvent and reagent in chemistry as well as getting used as being a flavouring, to be a cleaning solvent, as a superglue remover, and being a solvent in some damp aluminium electrolytic capacitors. Skip to cookie privatene