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Boron

Boron

 
PHYSICAL DATA

          Atomic Number

          5

          Atomic Weight

          10.81

          Density [ 20°C / 68°F ]

          2.34 g/cm3

          Melting Point

          2076 °C

GENERAL INFO
          History

Discovered in 1808 by Joseph-Louis Gay-Lussac and L.J. Thenard in Paris, France and by Sir Humphrey Davy in London, England.  The name is derived from "buraq", the Arabic word for borax. 

          Uses
  • Amorphous Boron used in pyrotechnics for distinctive green color.
  • Filaments used in optics.
  • Used in steel making to increase hardenability without adverse effects to ductility, formability, and machinability in annealed steels.
  • B10 isotope used in neutron-absorbing radiation shielding.
FORMS
          Typical
          Pure forms: Boron compounds:
  • Electrolytic Boron
  • Mg-reduced Boron
  • Borax
  • Boric Acid
  • Ferro Boron alloy
  • Boron Carbide
  • Boron Hydride(s)
  • Boron Nitride
          F.W.W.
   

Acknowledgements

  
F.W. Winter
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