Cerous oxalate, Ce₂(C₂O₄)₃

Cerous oxalate, Ce₂(C₂O₄)₃.10H₂O, may readily be obtained by double decomposition as a white, crystalline powder. The oxalate when air-dried has the above composition, but crystalline hydrates containing 3H₂O,9H₂O, and 11H₂O have also been prepared.

Cerous oxalate is transformed into a crystalline oxalochloride when it is dissolved in hot, concentrated hydrochloric acid, and the solution allowed to cool.