Chemical industry portal

boron trichloride

Product name boron trichloride
GOST no data
CAS 10294-34-5

Boron trichloride is a colorless, toxic and corrosive, nonflammable, liquified gas, forming a white smoke in humid air. It is soluble in CCl4, CHCl3, TiCl4, SnCl4. It can be decomposed by water to hydrogen chloride and boric acid. As a Lewis acid boron trichloride forms a stable adducts with a number of ethers, amines and halides.


Boron trichloride is prepared:

  • by direct chlorination of boron or its alloys at 1000°C;
  • by chlorination of the mixture of B2O3 with coal at high temperature:

    B2O3 + 3C + Cl2 --> 2BCl3 + 3CO


  • Boron trichloride is a starting material for the production of high purity elemental boron;
  • it is used for syntheses of diborane, organoboron and othe boron compounds;
  • as a catalyst for cation polymerization;
  • as a reagent in the refining of aluminium, magnesium, zinc, and copper alloys to remove nitrides, carbides, and oxides from molten metal. It has been used successfully as a soldering flux for alloys of aluminum, iron, zinc, tungsten, and monel. Aluminum castings can be improved by treating the melt with boron trichloride vapors;
  • in the manufacture of electrical resistors;
  • boron trichloride has been used in the field of high energy fuels and rocket propellants as a source of boron to raise BTU value;

  • Manufacturer(s) OJSC AVIABOR
    Chemical structure of boron trichloride

    Find chemicals by name, GOST or CAS number

    Russian version
    Unauthorized copying, processing or reproduction of any and all information published on this website prohibited.
    © 2000-2010 All rights reserved
    Powered by CHEMINDUSTRY.RU group
    Contact us