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 / diethylene oxide(=tetrahydrofuran) / furan, tetrahydro- / furanidine / hydrofuran / oxacyclopentane / oxolane / oxyl / Tetrahydrofuran / tetrahydrofurane / tetramethylene oxide / THF)