Chemical elements
  Yttrium
    Isotopes
    Energy
    Production
    Application
    Chemical properties
      Yttrium fluoride
      Yttrium chloride
      Yttrium bromide
      Yttrium chlorate
      Yttrium perchlorate
      Yttrium bromate
      Yttrium iodate
      Yttrium per-iodate
      Yttrium sesquioxide
      Yttria
      Yttrium hydroxide
      Yttrium sulphide
      Yttrium sulphite
      Yttrium sulphate
      Yttrium dithionate
      Yttrium selenite
      Yttrium selenate
      Yttrium tungstate
      Yttrium silicotungstate
      Yttrium nitrate
      Yttrium orthophosphate
      Acid yttrium orthophosphate
      Yttrium hydrogen pyrophosphate
      Yttrium metaphosphate
      Yttrium carbide
      Yttrium carbonate
      Yttrium platinocyanide
      Yttrium thiocyanate
      Yttrium oxalate
      Yttrium ethylsulphate
      Yttrium acetylacetonate
      Yttrium silicate
    PDB 1dde-3uf3

Yttrium nitrate, Y(NO3)3






yttrium nitrate solubility diagram
The system Y2O3 - N2O5 - H20 at 25° C. Solubility diagram.
Yttrium nitrate, Y(NO3)3.6H2O, forms deliquescent, triclinic crystals and loses 3H2O at 100°. The trinitrate, Y(NO3)3.3H2O, crystallises from very concentrated nitric acid. A dihydrate has also been described. When heated, yttrium nitrate first forms basic nitrate and subsequently at very high temperatures leaves a residue of yttria. Yttrium nitrate is isodimorphous with bismuth nitrate.

A saturated aqueous solution of the nitrate at 25° has a specific gravity (25°/25°) of 1.7446 and contains 141.6 grams of anhydrous nitrate per 100 grams of water.

The only basic yttrium nitrate that exists at 25° has the composition 3Y2O3.4N2O5.20H2O. It is stable in air and in the presence of a solution of yttrium nitrate containing one-fourth its weight or more of anhydrous nitrate, and from such a solution it can be recrystallised (see fig.). It is not affected by absolute alcohol, but is decomposed by water.


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