Gadolinium(III) nitrate

Gadolinium(III) nitrate
Identifiers
CAS Number	10168-81-7 (anhydrous); 19598-90-4 (hexahydrate);
3D model (JSmol)	Interactive image;
ChemSpider	140078 ;
ECHA InfoCard	100.030.385
PubChem CID	159266 (anhydrous); 71438167 (pentahydrate); 209258 (hexahydrate); 132277104 (nonahydrate);
CompTox Dashboard (EPA)	DTXSID80890648 ;
	InChI InChI=1S/Gd.3NO3/c;32-1(3)4/q+3;3-1 Key: MWFSXYMZCVAQCC-UHFFFAOYSA-N ; InChI=1/Gd.3NO3/c;32-1(3)4/q+3;3-1 Key: MWFSXYMZCVAQCC-UHFFFAOYAX;
	SMILES [Gd+3].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O;
Properties
Chemical formula	Gd(NO3)3
Molar mass	343.26 g/mol
Appearance	White crystalline solid
Density	2.3 g/cm3
Melting point	91 °C (196 °F; 364 K)
Solubility in water	Soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H315, H318, H319, H335, H410
Precautionary statements	P210, P220, P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P391, P403+P233, P405, P501
Safety data sheet (SDS)	External MSDS
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Gadolinium(III) nitrate is an inorganic compound of gadolinium with the formula Gd(NO₃)₃. A hydrate with the formula [Gd(NO₃)₃(H₂O)₄]·2H₂O exists.^[2] This salt is used as a water-soluble neutron poison in nuclear reactors.^[3] Gadolinium nitrate, like all nitrate salts, is an oxidizing agent.

Use

Gadolinium nitrate was used at the Savannah River Site heavy water nuclear reactors and had to be separated from the heavy water for storage or reuse.^[4]^[5] The Canadian CANDU reactor, a pressurized heavy water reactor, also uses gadolinium nitrate as a water-soluble neutron poison in heavy water.

Gadolinium nitrate is also used as a raw material in the production of other gadolinium compounds, for production of specialty glasses and ceramics and as a phosphor.

References

^ PubChem. "Gadolinium trinitrate". pubchem.ncbi.nlm.nih.gov. Retrieved 2025-12-18.
^ Taha, Z. A.; Ajlouni, A.; Hijazi, A. K.; Kühn, F. E.; Herdtweck, E. (2012-07-01). "Redetermination of [Gd(NO3)3(H2O)4]·2H2O". Acta Crystallographica Section E: Structure Reports Online. 68 (7): i56–i57. doi:10.1107/S1600536812028000. ISSN 1600-5368. PMC 3393141.
^ DOE Fundamentals Handbook: Nuclear Physics and Reactor Theory (PDF). U.S. Department of Energy. January 1993. p. 31. Archived from the original (PDF) on 2008-04-23. Retrieved 2007-09-26.
^ E. Wilde; C. Berry. "Novel Method for Removing Gadolinium from Used Heavy Water Reactor Moderator".
^ E.W. Wilde; M.B. Goli; C.J. Berry; J.W. Santo Domingo; H.L. Martin. "Novel Method for Removing Gadolinium from Used Heavy Water Reactor Moderator" (PDF).

[1] PubChem. "Gadolinium trinitrate". pubchem.ncbi.nlm.nih.gov. Retrieved 2025-12-18.

[2] Taha, Z. A.; Ajlouni, A.; Hijazi, A. K.; Kühn, F. E.; Herdtweck, E. (2012-07-01). "Redetermination of [Gd(NO3)3(H2O)4]·2H2O". Acta Crystallographica Section E: Structure Reports Online. 68 (7): i56–i57. doi:10.1107/S1600536812028000. ISSN 1600-5368. PMC 3393141.

[3] DOE Fundamentals Handbook: Nuclear Physics and Reactor Theory (PDF). U.S. Department of Energy. January 1993. p. 31. Archived from the original (PDF) on 2008-04-23. Retrieved 2007-09-26.

[4] E. Wilde; C. Berry. "Novel Method for Removing Gadolinium from Used Heavy Water Reactor Moderator".

[5] E.W. Wilde; M.B. Goli; C.J. Berry; J.W. Santo Domingo; H.L. Martin. "Novel Method for Removing Gadolinium from Used Heavy Water Reactor Moderator" (PDF).

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