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
sical 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 (A) | 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, rmaceuticals and coatings, in precision magnetic tape manufacture and as a reaction solvent.
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