Terbium(III) oxalate
Terbium(III) oxalate is a salt with the formula Tb2(C2O4)3. Its decahydrate appears as a white solid and glows green under ultraviolet light.
The decahydrate can be made by reacting terbium(III) chloride with oxalic acid in water. When heated, it loses water to become the anhydrous oxalate. Continued heating in air converts it to terbium(III,IV) oxide (Tb4O7), releasing carbon monoxide and carbon dioxide. If kept in air-free conditions, it can decompose to terbium(III) oxide.
In acid, it reacts with hydrochloric acid to form the hydrated protonated oxalate complex H[Tb(C2O4)2]·6H2O.
Safety: this compound is hazardous—harmful if swallowed or if it contacts skin, and it can cause eye damage. Handle with appropriate precautions.
This page was last edited on 2 February 2026, at 14:44 (CET).