Praseodymium Oxide (III) (Pr2O3)-Powder

Characteristic

Praseodymium(III) oxide, praseodymium oxide or praseodymia is the chemical compound composed of praseodymium and oxygen with the formula Pr₂O₃. It forms white hexagonal crystals.

Chemical formula：Pr₂O₃

Molar mass： 329.813 g/mol

Appearance： white hexagonal crystals

Density： 6.9 g/cm³

Melting point： 2,183 °C (3,961 °F; 2,456 K)

Boiling point： 3,760 °C (6,800 °F; 4,030 K)

Magnetic susceptibility (χ)：+8994.0·10⁻⁶ cm³/mol

Crystal structure：Hexagonal, hP5

Application

Praseodymium(III) oxide can be used as a dielectric in combination with silicon. Praseodymium-doped glass, called didymium glass, turns yellow and is used in welding goggles because it blocks infrared radiation. Praseodymium(III) oxide is also used to color glass and ceramics yellow. For coloring ceramics, also the very dark brown mixed-valence compound praseodymium(III,IV) oxide, Pr₆O₁₁, is used.