Praseodymium arsenate is the arsenate salt of praseodymium, with the chemical formula of PrAsO4.

It has good thermal stability.

[citation needed] Its ferroelectric transition temperature is 52°C.

[1] Praseodymium arsenate be prepared by reacting sodium arsenate (Na3AsO4) and praseodymium chloride (PrCl3) in a solution:[2] The product can also be obtained by reacting praseodymium(III,IV) oxide and diammonium hydrogen arsenate in hot dilute nitric acid in a stoichiometric ratio.

[1] This inorganic compound–related article is a stub.