Its decahydrate can be obtained by reacting terbium(III) chloride and oxalic acid in an aqueous solution.
[1] Its decahydrate gradually loses water when heated and becomes anhydrous.
Continued heating obtains terbium(III,IV) oxide.
[3] It decomposes in isolation from air to form terbium(III) oxide.
[1] It reacts with hydrochloric acid to obtain H[Tb(C2O4)2]·6H2O.