Tetrahydrofuran

Tetrahydrofuran (THF) is an organic compound with the formula (CH₂)₄O. It is a colorless, water-miscible organic liquid with low viscosity at standard temperature and pressure. The compound is heterocyclic. As one of the most polar ethers with a wide liquid range, it is a useful solvent. Its main use is as a precursor to polymers. THF has an odor similar to its chemical cousin, diethyl ether, but is a much less potent anesthetic than diethyl ether.