Praseodymium(III,IV) oxide

Praseodymium(III,IV) oxide
Names
	IUPAC name Praseodymium(III,IV) oxide
Identifiers
CAS Number	12037-29-5;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.031.676
EC Number	234-857-9;
PubChem CID	16211481;
CompTox Dashboard (EPA)	DTXSID20894261 ;
	InChI InChI=1S/11O.6Pr Key: AICMLAQRDYRMRP-UHFFFAOYSA-N;
	SMILES O=[Pr]=O.O=[Pr]=O.O=[Pr]=O.O=[Pr]=O.O=[Pr]O[Pr]=O;
Properties
Chemical formula	Pr6O11
Molar mass	1021.44 g/mol
Appearance	dark brown powder
Density	6.5 g/mL
Melting point	2,183 °C (3,961 °F; 2,456 K).
Boiling point	3,760 °C (6,800 °F; 4,030 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P305+P351+P338
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	5000 mg·kg−1 Rat oral
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Praseodymium(III,IV) oxide is the inorganic compound with the formula Pr₆O₁₁ that is insoluble in water. It has a cubic fluorite structure. It is the most stable form of praseodymium oxide at ambient temperature and pressure.