Factory Direct Sales Tetrahydrofuran Price,THF Methyl Tetrahydrofuran Cas No.:109-99-9

  Tetrahydrofuran ---  THF Molecular formula: C4H8O; CH2CH2OCH2CH2 Molecular Weight: 72.11 Relative density: (water = 1) 0.8892 relative density:: (Air = 1) 2.5 Melting point: -108.56 °C boiling point: 65.4 °C steam: 15.20kPa / 15 °C Synonyms: 1,4-epoxybutane; butylene oxide; diethylene oxide; THF, tetramethylene oxide; oxacyclopentane; Cyclotetramethylene oxide; Furanidine; Hydrofuran; oxolane       Physical and chemical property: Colorless liquid with an ether-like odor.Density 0.8892, nD 1.405, bp 66oC, solidifying point -108.56oC. Miscible with water and most organic solvents. Flammable. May cause peroxide explosion in air.   Specification: ---  Tetrahydrofuran     Item Specification Test Result Appearance Colorless transparent liquid Colorless transparent liquid Density (20℃)  0.88-0.99  0.886-0.889 Content   99.9%min   99.93% Moisture   100PPM max (0.01%max) 50-100PPM (confirmed) Chromaticity (APHA) 10max 6 Refractive index 1.405-1.1465 confirmed The content of  Peroxides 150PPM max 60PPM Stabilizer 240PPM max 180PPM Conclusion ------- Qualified   Use:  The major use is as a monomer in the production of polytetramethylene ether glycol (PTMEG), a component of cast and thermoplastic urethane elastomers, polyurethane stretch fibers (spandex) and high-performance copolyester-polyether elastomers (COPE). A smaller amount of THF is used as a solvent in polyvinyl chloride (PVC) cements, pharmaceuticals and coatings, in precision magnetic tape manufacture and as a reaction solvent.