Erbium(III) nitrate explained

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:

Er+6HNO _{3} \xrightarrow{ Er(NO _{3 )} _{3} + 3 NO _{2} + 3 H _{2O\uparrow} }

Dissolving erbium oxide or hydroxide in nitric acid:

Er(OH) _{3} +3HNO _{3} \xrightarrow{ Er(NO _{3 )} _{3} + 3 H _{2O\uparrow} }

Reaction of nitrogen dioxide with metallic erbium:

Er+3N _{2O} _{4} \xrightarrow{ Er(NO _{3 )} _{3} + 3 NO\uparrow }

Physical properties

Erbium(III) nitrate forms pink hygroscopic crystals.

Forms crystalline hydrates of the composition Er(NO3)3*5H2O.

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.

Notes and References

1. Book: Steglich . Patrick . Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering . 21 October 2020 . BoD – Books on Demand . 978-1-83968-188-2 . 42 . 19 August 2021 . en.
2. Book: Милешко . Леонид . Гапоненко . Николай . Основы процессов получения легированных оксидных пленок методами золь-гель технологии и анодного окисления . 21 February 2020 . Litres . 978-5-04-234580-7 . 42 . ru.
3. Book: Лидин . Ростислав . Молочко . Вадим . Андреева . Лариса . Константы неорганических веществ. Справочник . 2 February 2019 . Litres . 978-5-04-077039-7 . 37 . 19 August 2021 . ru.
4. Book: Registry of Toxic Effects of Chemical Substances . 1987 . . 2186 . 19 August 2021 . en.
5. Book: Macintyre . Jane E. . Dictionary of Inorganic Compounds . 23 July 1992 . . 978-0-412-30120-9 . 3120 . 19 August 2021 . en.
6. Book: Sr . Richard J. Lewis . Hazardous Chemicals Desk Reference . 13 June 2008 . . 978-0-470-18024-2 . 591 . 19 August 2021 . en.