Holmium (III) nitrate is an inorganic compound, a salt of holmium and nitric acid with the chemical formula Ho(NO3)3.[1] The compound forms yellowish crystals, dissolves in water, also forms crystalline hydrates.[2]
Anhydrous salt is obtained by the action of nitrogen dioxide on holmium(III) oxide:
| 2Ho2O3+9N2O4 \xrightarrow{150oC 4Ho(NO | |
| 3) |
3+6NO}
Effect of nitrogen dioxide on metallic holmium:
| Ho+3N2O4 \xrightarrow{200oC Ho(NO | |
| 3) |
3+3NO}
Reaction of holmium hydroxide and nitric acid:
| Ho(OH)3+3NHO3 \xrightarrow{150oC Ho(NO | |
| 3) |
3+3H2O}
Holmium(III) nitrate forms yellowish crystals.
Forms a crystalline hydrate of the composition Ho(NO3)3•5H2O.[3]
Hydrated holmitic nitrate thermally decomposes to form and decomposes to holmium oxide upon subsequent heating.
The compound is used for the production of ceramics and glass.
Also used to produce metallic holmium and as a chemical reagent.