Tetrahydrofuran Industrial Grade

Tetrahydrofuran is a heterocyclic organic compound. It is one of the strong polar ethers, used as a medium polar solvent in chemical reactions and extraction. Colorless volatile liquid, similar to the smell of ether. Soluble in water, ethanol, ether, acetone, benzene and other organic solvents.

First, the physical and chemical properties

    Chemical properties

And air mixture can be explosive; in the air can form explosive peroxides, met the fire, high temperature, oxidant flammable; combustion to stimulate the smoke. Is a heterocyclic organic compound. Belongs to the ether, is the aromatic compound furan completely hydrogenated products. In the chemical reaction and extraction used as a medium polar aprotic solvents. Tetrahydrofuran at room temperature with the water can be partially miscible, part of the illicit reagent business is the use of this point on the tetrahydrofuran reagent watered profiteering. Tetrahydrofuran easily becomes a peroxide during storage. Thus, commercially available tetrahydrofurans are often protected against oxidation by BHT, i.e., 2,6-di-tert-butyl-p-cresol. Tetrahydrofuran can be placed in a sealed bottle by sodium hydroxide stored in the dark to save.

Second, the role and use

1, as a solvent, organic synthesis of raw materials

2, for chromatography reagents, organic solvents and nylon 66 intermediates. Tetrahydrofuran, also known as the oxygen ring, oxolane, tetramethylene oxygen, is the synthesis of pesticide phenyltin tin intermediates, in addition, can be directly used in the system of synthetic fibers, synthetic resin, synthetic rubber, is also a number of polymeric materials , Precision tape and electroplating industry solvent, but also for the production of adiponitrile, adipic acid, hexamethylenediamine, succinic acid, butanediol, γ-butyrolactone, in the pharmaceutical industry, can be used to produce cough must be clear, Progesterone, and for use as pharmaceutical solvents.

3, Tetrahydrofuran is an important organic synthesis raw material and is a good solvent, especially for the dissolution of PVC, polyvinylidene chloride and aniline, widely used as surface coatings, anti-corrosion coatings, printing ink, tape and film coating solvent , And used as a reaction solvent for aluminum plating liquid can be arbitrarily control the thickness of the aluminum layer and bright. Tetrahydrofuran itself can be polycondensed (cation-initiated ring-opening and then polymerization) into poly tetramethylene ether glycol (PTMEG), also known as tetrahydrofuran homopolyether. PTMEG and toluene diisocyanate (TDI) made of wear-resistant, oil, low temperature performance, high strength special rubber; and dimethyl terephthalate and 1,4-butanediol made of block polyether elastic polyester material. (Molecular weight: 2000), PTMEG with methylene bis (4-phenyl) diisocyanate (MDI), special rubber and some special-purpose coatings. In organic synthesis, for the production of tetrahydrothiophene, 1.2 - dichloroethane, 2,3 - dichloro-tetrahydrofuran, valerolactone, butyrolactone and pyrrolidone, and so on. In the pharmaceutical industry, THF for the synthesis of cough must be clear, liphosmycin, progesterone and some hormone drugs. THF by hydrogen sulfide to generate tetrahydrothiophenol, can be used as fuel odor in the agent (identification additives). THF can also be used as a synthetic leather surface treatment agent.