Tetrahydrofuran (also known as tetramethylene oxide, and THF) is a clear, colourless, volatile, and water-miscible liquid. It has low viscosity at standard temperature and has the formula C4H8O. Substance name:tetrahydrofuran Trade name:Tetrahydrofuran EC no:203-726-8 CAS no:109-99-9 HS code:29321100 Formula:C4H8O Synonyms:1,4-epoxybutane / agrisynth THF / butane, 1,4-epoxy- / butane, alpha,delta-oxide / butylene oxide / cyclotetramethylene oxide [...]