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Manganese

Manganese

 
PHYSICAL DATA

          Atomic Number

          25

          Atomic Weight

          54.938

          Density [ 20°C / 68°F ]

          7.44 g/cm3

          Melting Point

          1244 °C

GENERAL INFO
          History

Discovered in 1774 by Johann G. Gahn in Stockholm, Sweden.  The name is derived from the Latin word "magnes" meaning magnet.

          Uses
  • Oxide is used to prepare Oxygen and Chlorine.
  • Oxide is also used in dry battery cells.
  • Used in steel making to Improve hardness, wear resistance, and tensile strength.  It reacts with Sulfur to improve forgeability and surface quality.
  • Used in ferromagnetic alloys.
  • Used in the utilization of the B1 vitamin.
FORMS
          Typical
          Pure forms: Manganese compounds:
  • Electrolytic flake
  • Oxides
  • Minerals (pyrolusite, rhodochrosite)
  • Silicomanganese
  • Manganese Bearing Ferro Alloys
          F.W.W.
   

Acknowledgements

  
F.W. Winter
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