Black powder, density 6.5g/cm3, melting point 2500 ℃, boiling point 3760 ℃. Insoluble in water, soluble in acids to form trivalent salts. Good conductivity.

Used in architectural ceramics and daily ceramics, it can be mixed with ceramic glaze to make color glaze, or can be used as underglaze pigment alone. The resulting pigment is light yellow with a pure and elegant color tone; Used for manufacturing permanent magnets. Choosing cheap praseodymium neodymium metal instead of pure neodymium metal to manufacture permanent magnet materials significantly improves its oxygen resistance and mechanical properties, and can be processed into magnets of various shapes. Widely used in various electronic devices and motors; Used for petroleum catalytic cracking. Adding praseodymium neodymium enrichment to Y-type zeolite molecular sieve to prepare petroleum cracking catalyst can improve the activity, selectivity, and stability of the catalyst; Used for abrasive polishing; In addition, it is also used in the field of fiber optics, etc.