亚洲国线精品国偷产拍,久久大香伊蕉在人线免费AV,欧美日韩高清在线观看有码,一本一道久久a久久

    <legend id="faxvt"></legend>

      <td id="faxvt"></td>
      1. Keyword:
        Products:
        Product Name:tetrahydrofuran
           Product details
        Other Name: 1,4 - epoxy butane, cyclopentane oxa
        English name: tetrahydrofuran; tetrame (thylene oside; diethylene oxide; oxolane,
        Abbreviation: THF
        Molecular formula: C4H8O Molecular Weight: 72.10
        Performance: tetrahydrofuran, colorless, transparent liquid. With ether odor. Density of 0.8892. Refractive index of 1.405. Boiling Point 66 ℃. Freezing point -108.56 ℃. Soluble in water and most organic solvents. Easy to burn. In the air can generate explosive peroxy compounds. Under the pressure of hydrogen chloride reacts with 1,4 - dichloro-butane.
        Product use: THF is an important organic chemical and fine chemical raw materials. Widely used in resin solvent (such as tape coating, PVC coating, PVC reactor cleaning, removal of PVC film, cellophane coating, plastic printing ink, thermoplastic polyurethane coating); reaction solvent (such as format, reagents, alkyl alkali aryl metal compounds and alkali metal compounds, aluminum hydride and boron hydride, steroids and macromolecular organic polymers); chemical intermediate products (such as polymerization PTMEG, natural flavor enhancer); chromatography solvent (such as gel permeation chromatography) .
        Tetrahydrofuran (THF) is the production of PTMEG starting material, also used as special solvents. Solvents commonly used in organic synthesis, can be used as solvents in pharmaceutical production, natural and synthetic resins (such as vinyl resin) and polyether rubber solvent. In addition, also the synthesis of medicine (such as carbetapentane, progesterone) of the raw materials. Also used in the synthesis of adipic acid, hexamethylene diamine, butanediol, succinic acid and rubber, high-energy fuel and so on.
        Copyright © 2010 Changzhou Gengyun Chemical Co., Ltd. All Rights Reserved.
        Technical Support:zw-group.com
        ICP:蘇ICP備05004812號

        Friendly Link:Packing machine series Changzhou granulating equipment Automatic code machine Aluminum continuous extrusion machine
        Hot Search:benzoyl chloride azobisisobutyronitrile benzyl chloride