Erbium(III) nitrate

Erbium(III) nitrate
Names
	Other names Erbium trinitrate, Erbium nitrate
Identifiers
CAS Number	10031-51-3; hexahydrate: 13476-05-6; pentahydrate: 10031-51-3;
3D model (JSmol)	Interactive image; hexahydrate: Interactive image; pentahydrate: Interactive image;
ChemSpider	pentahydrate: 21241306;
EC Number	pentahydrate: 233-436-7;
PubChem CID	hexahydrate: 202892; pentahydrate: 53249207;
CompTox Dashboard (EPA)	hexahydrate: DTXSID60158935; pentahydrate: DTXSID60692900;
	InChI hexahydrate: InChI=1S/Er.3NO3.6H2O/c;32-1(3)4;;;;;;/h;;;;61H2/q+3;3-1;;;;;; Key: SXJVNCWLEGIRSJ-UHFFFAOYSA-N; pentahydrate: InChI=1S/Er.3NO3.5H2O/c;32-1(3)4;;;;;/h;;;;51H2/q+3;3-1;;;;; Key: LWHHUEHWVBVASY-UHFFFAOYSA-N;
	SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Er+3]; hexahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Er+3]; pentahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Er+3];
Properties
Chemical formula	Er(NO3)3
Molar mass	353.274
Appearance	Pink crystals
Melting point	430 °C (806 °F; 703 K)
Solubility in water	Soluble
Solubility in ethanol	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H315, H318, H319, H335
Precautionary statements	P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
Related compounds
Related compounds	Terbium(III) nitrate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Erbium(III) nitrate is an inorganic compound, a salt of erbium and nitric acid with the chemical formula Er(NO₃)₃.^[2]^[3]^[4] The compound forms pink crystals, readily soluble in water. A pentahydrate and hexahydrate also exist.^[5]^[6]

Synthesis

Dissolving metallic erbium in nitric acid:

Er + 6 HNO₃ → Er(NO₃)₃ + 3 NO₂ + 3 H₂O ↑

Dissolving erbium oxide or hydroxide in nitric acid:

Er(OH)₃ + 3 HNO₃ → Er(NO₃)₃ + 3 H₂O ↑

Reaction of nitrogen dioxide with metallic erbium:

Er + 3 N₂O₄ → Er(NO₃)₃ + 3 NO ↑

Properties

Both erbium(III) nitrate and its crystalline hydrate decompose on heating. The hydrated erbium nitrate thermally decomposes to form ErONO₃ and then erbium oxide.

Applications

It is used to obtain metallic erbium and is also used as a chemical reagent.

References

^ Sr, Richard J. Lewis (13 June 2008). Hazardous Chemicals Desk Reference. John Wiley & Sons. p. 591. ISBN 978-0-470-18024-2. Retrieved 19 August 2021.
^ Steglich, Patrick (21 October 2020). Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering. BoD – Books on Demand. p. 42. ISBN 978-1-83968-188-2. Retrieved 19 August 2021.
^ Милешко, Леонид; Гапоненко, Николай (21 February 2020). Основы процессов получения легированных оксидных пленок методами золь-гель технологии и анодного окисления (in Russian). Litres. p. 42. ISBN 978-5-04-234580-7.
^ Лидин, Ростислав; Молочко, Вадим; Андреева, Лариса (2 February 2019). Константы неорганических веществ. Справочник (in Russian). Litres. p. 37. ISBN 978-5-04-077039-7. Retrieved 19 August 2021.
^ Registry of Toxic Effects of Chemical Substances. National Institute for Occupational Safety and Health. 1987. p. 2186. Retrieved 19 August 2021.
^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3120. ISBN 978-0-412-30120-9. Retrieved 19 August 2021.

[1] Sr, Richard J. Lewis (13 June 2008). Hazardous Chemicals Desk Reference. John Wiley & Sons. p. 591. ISBN 978-0-470-18024-2. Retrieved 19 August 2021.

[2] Steglich, Patrick (21 October 2020). Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering. BoD – Books on Demand. p. 42. ISBN 978-1-83968-188-2. Retrieved 19 August 2021.

[3] Милешко, Леонид; Гапоненко, Николай (21 February 2020). Основы процессов получения легированных оксидных пленок методами золь-гель технологии и анодного окисления (in Russian). Litres. p. 42. ISBN 978-5-04-234580-7.

[4] Лидин, Ростислав; Молочко, Вадим; Андреева, Лариса (2 February 2019). Константы неорганических веществ. Справочник (in Russian). Litres. p. 37. ISBN 978-5-04-077039-7. Retrieved 19 August 2021.

[5] Registry of Toxic Effects of Chemical Substances. National Institute for Occupational Safety and Health. 1987. p. 2186. Retrieved 19 August 2021.

[6] Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3120. ISBN 978-0-412-30120-9. Retrieved 19 August 2021.

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