Praseodymium oxide is a rare earth oxide, dark green to dark brown powder at room temperature, with high thermal stability and chemical stability. It is insoluble in water, but can dissolve in acid and form trivalent salts, good electrical conductivity. In industry, praseodymium oxide is widely used in ceramics, glass, rare earth permanent magnet, rare earth polishing powder and other fields. As an additive of ceramic glaze and pigment, it can improve the color and performance of ceramics. The addition of praseodymium oxide to glass can make green glass, which is used for decoration and imitation gemstone production. In addition, praseodymium oxide is also used in the production of high-tech materials such as petroleum cracking catalysts and rare earth permanent magnets.