Tetrahydrofuran is a class of heterocyclic organic compounds. It is one of the strongest polar ethers and is used as a medium polar solvent in chemical reactions and extraction. It is a colorless transparent liquid. It has an etheric odor. The relative density is 0.89. Molecular weight 72.11. Melting point -108.5ºC. Boiling point 66ºC. Flash point -17.2ºC. Spontaneous combustion point 321.1ºC. Refractive index 1.407.
Basic information
Chinese name: tetrahydrofuran
English abbreviation: THF
English name :Tetrahydrofuran
Chinese alias: oxacyclopentane; Amyl oxide; Anhydrous tetrahydrofuran; Tetrahydride; Tetramethylene oxide; 1, 4-epoxy butane; Tetramethylene oxide
English alias :THF; tetrahydrofuran; oxolane; Sodium tri-sec-butylborohydride; Butane, alpha,delta-oxide; Cyclotetramethylene oxide; Diethylene oxide; Furan, tetrahydro-; Furanidine; 1, 2, 3, 4 - tetrahydro - 9 h - fluoren - 9 - one
CAS number :109-99-9
Molecular weight :72.11
EINECS number: 203-786-5
Physical property data
Properties Colorless transparent liquid with ether odor.
Boiling_point 67ºC
Freezing point -108ºC
The relative Density is 0.985
Refractive index 1.4050
flash_point -17ºC
Solubility with water, alcohol, ketone, benzene, ester, ether, hydrocarbon miscible.
Main use
Used as solvent and raw material for organic synthesis
It is used as a medium polarity aprotic solvent in chemical reactions and extraction. Tetrahydrofuran is a colorless, low-viscosity liquid with an odor similar to ether. At room temperature, tetrahydrofuran and water can be partially miscible, and some illegal reagent vendors use this to make huge profits on tetrahydrofuran reagents mixed with water. Tetrahydrofuran tends to become peroxide when stored. Therefore, commercial tetrahydrofurans often use BHT, 2, 6-di-tert-butyl-p-cresol, to prevent oxidation. Tetrahydrofuran can be stored in a dark place in a sealed bottle with sodium hydroxide.
Colorless transparent liquid. Smells of ether. It is an important organic chemical and fine chemical raw material, widely used in resin solvents (tape coating, PVC surface coating, cleaning PVC reactor, removing PVC film, cellophane coating, plastic printing ink, thermoplastic polyurethane coating); Reaction solvents (form reagents, alkyl alkali and aryl alkali metal compounds, aluminium and boron hydrides, steroidal compounds and macromolecular organic polymers); Chemical intermediates (polymerization to produce PTMEG, natural gas flavoring agent); Chromatographic solvent (gel permeation chromatography).
Tetrahydrofuran has the characteristics of low toxicity, low boiling point and good fluidity.
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