Praseodymium(III) oxalate is an inorganic compound, a salt of praseodymium metal and oxalic acid, with the chemical formula C6O12Pr2.

[1] The compound forms light green crystals that are insoluble in water.

Praseodymium(III) oxalate can be prepared from the reaction of soluble praseodymium salts with oxalic acid: Praseodymium(III) oxalate forms crystalline hydrates (light green crystals): Pr2(C2O4)3•10H2O.

The crystalline hydrate decomposes stepwise when heated:[2][3] Praseodymium(III) oxalate is used as an intermediate product in the synthesis of praseodymium.

If mixed with certain other materials, the compound paints glass intense yellow.