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    • Source: Neodymium tungstate

      • Neodymium tungstate is an inorganic compound, a salt of neodymium and tungstic acid with the chemical formula Nd2(WO4)3. It forms hydrated light purple crystals that are slightly soluble in water.


      Preparation



      Reacting neodymium (III) oxide and tungsten (VI) oxide at 1000 °C would produce anhydrous neodymium tungstate:

      Nd2O3 + 3 WO3 → Nd2(WO4)3
      The nonahydrate could be produced by the reaction of sodium tungstate and neodymium (III) nitrate:
      3 Na2WO4 + 2 Nd(NO3)3 → Nd2(WO4)3·9H2O↓ + 6 NaNO3


      Properties


      Neodymium tungstate forms the crystal of a monoclinic crystal system, with space group A 2/a, lattice constants a = 1.151 nm, b = 1.159 nm, c = 0.775 nm and β = 109.67 °. It is insoluble in ethanol and acetone and sparingly soluble in water. It forms the nonahydrate Nd2(WO4)3·9H2O.


      References

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