Chemical elements
  Praseodymium
    Isotopes
    Energy
    Production
    Application
    Chemical properties
      Praseodymium fluoride
      Praseodymium chloride
      Praseodymium oxychloride
      Praseodymium bromide
      Praseodymium iodide
      Praseodymium bromate
      Praseodymium sesquioxide
      Praseodymia
      Praseodymium hydroxide
      Praseodymium dioxide
      Praseodymium sulphide
      Praseodymium sulphate
      Praseodymium dithionate
      Praseodymium selenite
      Praseodymium selenate
      Praseodymium tungstate
      Praseodymium nitride
      Praseodymium nitrate
      Praseodymium carbide
      Praseodymium carbonate
      Praseodymium ethylsulphate
      Praseodymium acetylacetonate
      Praseodymium oxalate
    PDB 1k0z-4flb

Praseodymium sesquioxide, Pr2O3






Praseodymium sesquioxide, or praseodymia, Pr2O3, is obtained by reducing the dioxide at a red heat in a stream of hydrogen. It is a yellowish-green powder of density 6.88 (or 7.07) at 15°. When heated in the air it absorbs oxygen and becomes brown in colour.


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