Thulium Oxide (Tm2O3)

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Categories Rare earth, Thulium

Additional information

Item Number	OX69
Product Name	Thulium Oxide (Tm2O3)
CAS Number	12036-44-1
M. F.	Tm2O3
Purity	99%; 99.9%; 99.99% (REO)
Form*	P, ST

Description:

Thulium Oxide (Tm₂O₃), or thulium(III) oxide, is a white to pale green powder that represents the most stable oxide form of thulium. As a rare earth compound, it exhibits unique luminescent and magnetic properties.

Chemical Formula: Tm₂O₃representing
Molar Mass: 385.87 g/mol
Melting Point: ~2,341°C (4,246°F)
Density: 8.6 g/cm³
Solubility: Insoluble in water, soluble in strong acids

Applications:

Specialty Glass and Ceramics

Laser Glass Dopant:
- Used in thulium-doped fiber lasers for medical and industrial applications
- Enhances laser efficiency in the 2 µm wavelength range
Optical Glass Coloring: Imparts specific blue-green hues to specialty glasses

Phosphors and Lighting

X-ray Phosphors: Used in medical imaging screens for improved resolution
UV-Emitting Materials: Applied in forensic and security devices

Nuclear Applications

Neutron Absorption: Serves as a neutron poison in nuclear reactor control systems
Radiation Shielding: Incorporated into specialized glass formulations

Catalysis and Chemical Processes

Catalyst Component: Used in petroleum cracking and organic synthesis reactions
Hydrogen Storage: Investigated for improving hydrogen storage materials

Electronic and Magnetic Materials