| IUPAC name
| Systematic IUPAC name
| Other names
|Molar mass||365.85 g/mol|
|Melting point||2,410 °C (4,370 °F; 2,680 K)|
|Solubility|| Reacts with acids|
Insoluble in organic solvents
|Vapor pressure||~0 mmHg|
|Safety data sheet||Sigma-Aldrich|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Terbium(III) oxide, also known as terbium trioxide or terbia, is an oxide of terbium, with a chemical formula Tb2O3.
Terbium(III) oxide readily dissolves in acids, resulting in the terbium salt of the said acid.
Terbium(III) oxide is a white solid, with a melting point of 2,410 °C.
Terbium(III) oxide is sold by various chemical suppliers.
The precipitation of most terbium(III) compounds gives terbium(III) hydroxide, which can be converted to Tb2O3.
Terbium trioxide can be prepared by the reduction of terbium(III,IV) oxide (Tb4O7) with hydrogen at 1300 °C for 24 hours. This process is too complex for the amateur chemist, and it's cheaper to simply buy the compound.
- Make terbium salts
Terbium trioxide shows moderate toxicity and has no known biological role.
Terbium(III) oxide should be stored in sealed containers, away from moisture and acidic vapors.
Terbium(III) oxide can be either recycled or dumped in trash.
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