Gadolinium(III) nitrate

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.

Gadolinium(III) nitrate

Identifiers
CAS Number	10168-81-7 (anhydrous) 19598-90-4 (hexahydrate)
3D model (JSmol)	Interactive image
ChemSpider	140078 Y
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;3*2-1(3)4/q+3;3*-1 Y Key: MWFSXYMZCVAQCC-UHFFFAOYSA-N Y InChI=1/Gd.3NO3/c;3*2-1(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:[1]
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). Y verify (what is YN ?) Infobox references

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.