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Phosphorus

Phosphorus

 
PHYSICAL DATA

          Atomic Number

          15

          Atomic Weight

          30.974

          Density [ 20°C / 68°F ]

          1.82 g/cm3

          Melting Point

          44 °C

GENERAL INFO
          History

Discovered in 1669 by Hennig Brandt in Hamburg, Germany.  The name is derived from "phosphoros", the Greek word meaning bringer of light.

          Uses
  • Used in pyrotechnic and ordnance manufacturing.
  • Phosphates used in fertilizers, pesticides, and cleaning agents.
  • Used in steel making to increase strength and hardness but lowers ductility and toughness.  Can improve machinability if levels are controlled properly.
FORMS
          Typical
          Pure forms: Phosphorus compounds:
  • White Phosphorus
  • Red Phosphorus
  • Phosphate
  • Sulfides
  • Ferro Phosphorus (refined and unrefined)
          F.W.W.
   

Acknowledgements

  
F.W. Winter
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