Английская Википедия:Erbium(III) nitrate
Шаблон:Chembox Erbium(III) nitrate is an inorganic compound, a salt of erbium and nitric acid with the chemical formula Er(NO3)3.[1][2][3] The compound forms pink crystals, readily soluble in water, also forms crystalline hydrates.[4][5]
Synthesis
Dissolving metallic erbium in nitric acid:
- <math>\mathsf{Er + 6HNO_3 \ \xrightarrow{}\ Er(NO_3)_3 + 3NO_2 + 3H_2O\uparrow }</math>
Dissolving erbium oxide or hydroxide in nitric acid:
- <math>\mathsf{Er(OH)_3 + 3HNO_3 \ \xrightarrow{}\ Er(NO_3)_3 + 3H_2O\uparrow }</math>
Reaction of nitrogen dioxide with metallic erbium:
- <math>\mathsf{Er + 3N_2O_4 \ \xrightarrow{}\ Er(NO_3)_3 + 3NO\uparrow }</math>
Physical properties
Erbium(III) nitrate forms pink hygroscopic crystals.
Forms crystalline hydrates of the composition <chem>Er(NO3)3*5H2O</chem>.
Both erbium(III) nitrate and its crystalline hydrate decompose on heating.
Dissolves in water and EtOH.[6]
Chemical properties
The hydrated erbium nitrate thermally decomposed to form ErONO3 and then to erbium oxide.
Applications
It is used to obtain metallic erbium and is also used as a chemical reagent.
References
Шаблон:Erbium compounds Шаблон:Nitrates
