Names | |
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IUPAC name
Praseodymium(III,IV) oxide
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Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.031.676 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
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).[1] |
Boiling point | 3,760 °C (6,800 °F; 4,030 K)[1] |
Hazards | |
GHS labelling: | |
Warning | |
H315, H319, H335 | |
P261, P305+P351+P338 | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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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).
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Praseodymium(III,IV) oxide is the inorganic compound with the formula Pr6O11 that is insoluble in water.[2] It has a cubic fluorite structure.[3] It is the most stable form of praseodymium oxide at ambient temperature and pressure.[4]