Daily use of tetrahydrofuran

1. Used as solvent and raw material for organic synthesis.

2. Used as chromatographic reagent, organic solvent and nylon 66 intermediate. Tetrahydrofuran, also known as monocyclopentadecane, oxyheterocyclopentane and tetramethylene oxide, is an intermediate for the synthesis of pesticide phenylbutyltin. In addition, it can be directly used to produce synthetic fibers, synthetic resins and synthetic rubber. It is also a solvent for many polymer materials, precision tapes and electroplating industries. It is also used to produce adiponitrile, adipic acid, hexamethylene diamine, succinic acid, butanediol γ- Butyrolactone, etc. in the pharmaceutical industry, can be used in the production of kebiqing, progesterone, rifamycin and as a pharmaceutical solvent.

3. Tetrahydrofuran is an important organic synthetic raw material and a solvent with excellent performance. It is especially suitable for dissolving PVC, polyvinylidene chloride and butylamine. It is widely used as a solvent for surface coatings, anti-corrosion coatings, printing inks, tapes and film coatings, and as a reaction solvent. When it is used for electroplating aluminum solution, it can arbitrarily control the thickness and brightness of aluminum layer. Tetrahydrofuran itself can be polycondensated (via cation initiated ring opening repolymerization) into poly tetramethylene ether glycol (PTMEG), also known as tetrahydrofuran homopolyether. PTMEG and toluene diisocyanate (TDI) make special rubber with wear resistance, oil resistance, good low temperature performance and high strength; Block polyether polyester elastic material is made with dimethyl terephthalate and 1,4-butanediol. PTMEG with relative molecular weight of 2000 and p-methylene bis (4-phenyl) diisocyanate (MDI) are raw materials for polyurethane elastic fiber (spandex fiber), special rubber and some special-purpose coatings. In organic synthesis, it is used to produce Tetrahydrothiophene, 1.2-dichloroethane, 2.3-dichlorotetrahydrofuran, pentylene lactone, butyrolactone and pyrrolidone. In the pharmaceutical industry, THF is used to synthesize kebiqing, rifamycin, progesterone and some hormone drugs. THF is treated with hydrogen sulfide to produce tetrahydrothiophenol, which can be used as odorant (identification additive) in fuel gas. THF can also be used as a surface treatment agent for synthetic leather.