Thulium(III) nitrate

Thulium(III) nitrate
Names
	Other names Thulium trinitrate, Thulium nitrate
Identifiers
CAS Number	14985-19-4; pentahydrate: 36548-87-5; hexahydrate: 35725-33-8;
3D model (JSmol)	Interactive image; pentahydrate: Interactive image; hexahydrate: Interactive image; tetrahydrate: Interactive image;
ChemSpider	7974477;
EC Number	pentahydrate: 628-321-7;
PubChem CID	pentahydrate: 71311313; hexahydrate: 215464; tetrahydrate: 140412984;
CompTox Dashboard (EPA)	pentahydrate: DTXSID70189255;
	InChI pentahydrate: InChI=1S/3NO3.5H2O.Tm/c32-1(3)4;;;;;;/h;;;51H2;/q3-1;;;;;;+3 Key: PEYIBPJKEYRLDB-UHFFFAOYSA-N; hexahydrate: InChI=1S/3NO3.6H2O.Tm/c32-1(3)4;;;;;;;/h;;;61H2;/q3-1;;;;;;;+3 Key: FMAWDVZGWCKHEX-UHFFFAOYSA-N; tetrahydrate: InChI=1S/3NO3.4H2O.Tm/c32-1(3)4;;;;;/h;;;41H2;/q3*-1;;;;;+3 Key: HUSGBQPUDXPWPT-UHFFFAOYSA-N;
	SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Tm+3]; pentahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Tm+3]; hexahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Tm+3]; tetrahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.[Tm+3];
Properties
Chemical formula	Tm(NO3)3
Molar mass	354.949
Appearance	Dark-green crystals
Solubility in water	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H315, H319, H335
Precautionary statements	P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501
Related compounds
Related compounds	Terbium(III) nitrate, Lutetium(III) nitrate, Cerium(III) nitrate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Thulium(III) nitrate is an inorganic compound, a salt of thulium and nitric acid with the chemical formula Tm(NO₃)₃.^[1]^[2]^[3] The compound forms dark-green crystals, readily soluble in water, also forms crystalline hydrates.

Synthesis[]

Reaction of thulium and nitric acid:^[4]

Tm + 6HNO₃ → Tm(NO₃)₃ + 3NO₂ + 3H₂O

Reaction of thulium hydroxide and nitric acid:

Tm(OH)₃ + 3HNO₃ → Tm(NO₃)₃ + 3H₂O

Physical properties[]

Thulium(III) nitrate forms dark-green hygroscopic crystals.

Forms crystalline hydrates of the composition Tm(NO₃)₃·5H₂O.^[5]^[6]

Soluble in water and ethanol.^[7]

Chemical properties[]

Both the compound and its crystalline hydrate decompose on moderate heating.

Hydrated thulium nitrate thermally decomposes to form TmONO₃ and decomposes to thulium oxide upon further heating.

Applications[]

Thulium(III) nitrate hydrate is used as a reagent. Also used in optical glasses, ceramics, catalysts, electrical components, and photo-optical materials.^[8]

References[]

^ Волков, А.И.; Жарский, И.М. (2005). Большой химический справочник (in Russian). Современная школа. p. 132. ISBN 985-6751-04-7.
^ Skerencak, A.; Panak, Petra J.; Hauser, W.; Neck, Volker; Klenze, R.; Lindqvist-Reis, P.; Fanghänel, Thomas (January 2009). "TRLFS study on the complexation of Cm(III) with nitrate in the temperature range from 5 to 200 °C". Radiochimica Acta. 97 (8). doi:10.1524/ract.2009.1631. Retrieved 19 August 2021.
^ Modolo, Giuseppe; Kluxen, Paul; Geist, Andreas (January 2010). "Demonstration of the LUCA process for the separation of americium(III) from curium(III), californium(III), and lanthanides(III) in acidic solution using a synergistic mixture of bis(chlorophenyl)dithiophosphinic acid and tris(2-ethylhexyl)phosphate". Radiochimica Acta. 98 (4). doi:10.1524/ract.2010.1708.
^ Edelmann, Frank T.; Herrmann, Wolfgang A. (14 May 2014). Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 6, 1997: Volume 6: Lanthanides and Actinides. Georg Thieme Verlag. p. 23. ISBN 978-3-13-179221-1. Retrieved 19 August 2021.
^ "Thulium(III) nitrate pentahydrate". Sigma Aldrich. Retrieved 19 August 2021.
^ Elements, American. "Thulium(III) Nitrate Pentahydrate". American Elements. Retrieved 19 August 2021.
^ Haynes, William M. (9 June 2015). CRC Handbook of Chemistry and Physics, 96th Edition. CRC Press. p. 4-95. ISBN 978-1-4822-6097-7. Retrieved 19 August 2021.
^ "14579 Thulium(III) nitrate hydrate, REacton®, 99.9% (REO)". Alfa Aesar. Retrieved 19 August 2021.