| Section2 = | Section3 = | Section7 =,, | SPhrases =,, | FlashPt = -14 °C }} | Section8 = }} Tetrahydrofuran (THF)'s a colorless, water-miscible organic liquid with low-viscosity at standard temperature and pressure. It's a heterocyclic compound with a chemical formula C4H8O, and's the fully hydrogenated analog of the aromatic organic compound furan. It's one of the most polar of the organic functional class of ethers, and has a relatively low freeze point, and so's a commonly used modern… (More on Thf)