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Gadolinium(III) nitrate

Identifiers
CAS Number	10168-81-7
3D model (JSmol)	Interactive image
ChemSpider	140078
ECHA InfoCard	100.030.385
PubChem CID	159266
CompTox Dashboard (EPA)	DTXSID80890648
InChI InChI=1S/Gd.3NO3/c;3*2-1(3)4/q+3;3*-1Key: MWFSXYMZCVAQCC-UHFFFAOYSA-N InChI=1/Gd.3NO3/c;3*2-1(3)4/q+3;3*-1Key: MWFSXYMZCVAQCC-UHFFFAOYAX
SMILES .O=().()=O.()=O
Properties
Chemical formula	Gd(NO3)3
Molar mass	343.26 g/mol
Appearance	White crystalline solid
Density	2.3 g/cm
Melting point	91 °C (196 °F; 364 K)
Solubility in water	Soluble
Hazards
Safety data sheet (SDS)	External MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is  ?) Infobox references

Gadolinium(III) nitrate is an inorganic compound of gadolinium. This salt is used as a water-soluble neutron poison in nuclear reactors. Gadolinium nitrate, like all nitrate salts, is an oxidizing agent.

The most common form of this substance is hexahydrate Gd(NO₃)₃•6H₂O with molecular weight 451.36 g/mol and CAS Number: 19598-90-4.

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. 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

1. 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.
2. E. Wilde; C. Berry. "Novel Method for Removing Gadolinium from Used Heavy Water Reactor Moderator".
3. 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).

• Gadolinium compounds
• Nitrates
• Neutron poisons