Gadolinium(III) oxide

Gadolinium(III) oxide
Names
	Other names gadolinium sesquioxide, gadolinium trioxide
Identifiers
CAS Number	12064-62-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	140201 ;
ECHA InfoCard	100.031.861
EC Number	235-060-9;
PubChem CID	159427;
RTECS number	LW4790000;
UNII	5480D0NHLJ ;
CompTox Dashboard (EPA)	DTXSID4051613 DTXSID00912093, DTXSID4051613 ;
	InChI InChI=1S/2Gd.3O/q2+3;3-2 Key: CMIHHWBVHJVIGI-UHFFFAOYSA-N ; InChI=1/2Gd.3O/q2+3;3-2 Key: CMIHHWBVHJVIGI-UHFFFAOYAI;
	SMILES [Gd+3].[Gd+3].[O-2].[O-2].[O-2];
Properties
Chemical formula	Gd2O3
Molar mass	362.50 g/mol
Appearance	white odorless powder
Density	7.07 g/cm3
Melting point	2,420 °C (4,390 °F; 2,690 K)
Solubility in water	insoluble
Solubility product (Ksp)	1.8×10−23
Solubility	soluble in acid
Magnetic susceptibility (χ)	+53,200·10−6 cm3/mol
Structure
Crystal structure	cubic, cI80, Monoclinic
Space group	Ia-3, No. 206, C2/m, No. 12
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319, H410
Precautionary statements	P264, P273, P280, P305+P351+P338, P337+P313, P391, P501
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Gadolinium(III) chloride
Other cations	Europium(III) oxide, Terbium(III) oxide
	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) oxide (archaically gadolinia) is an inorganic compound with the formula Gd₂O₃. It is one of the most commonly available forms of the rare-earth element gadolinium, derivatives, of which are potential contrast agents for magnetic resonance imaging.