Tetrahydrofuran, THF, CAS :109-99-9

Tetrahydrofuran is an important organic synthetic raw material and a solvent with excellent performance. It is especially suitable for dissolving PVC, polyvinylidene chloride and butyniline. It is widely used as a solvent for surface coating, anti-corrosion coating, printing ink, tape and film coating, 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 (ring opening polymerization initiated by cation) to form poly tetramethylene ether glycol (PTMEG), also known as tetrahydrofuran homopolyether. PTMEG and toluene diisocyanate (TDI) are made into special rubber with wear resistance, oil resistance, good low temperature performance and high strength; Block polyether polyester elastic material was prepared 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 the aspect of organic synthesis, it is used to produce Tetrahydrothiophene, 1,2-dichloroethane, 2,3-dichlorotetrahydrofuran, pentalactone, 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.

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