GBL Gamma Butyrolactone GHB Colourless Oily Liquid Butyrolactone For Wheel Cleaner GBL gamma-Butyrolactone(GBL) Product Name: Gamma-butyrolactone(GBL) CAS: 96-48-0 MF: C4H6O2 MW: 86.09 Purity:99.9% Chemical Properties: colourless oily liquid Usage: r-butyrolactone is one kind of important fine chemical intermediate, simultaneously also is one kind of performance fine highboiling point solvent, ideal antioxidant, plasticizer,extracting agent, absorbent, dispersing agent, solid stain, Coagulation