Lutetium (III) oxide
Lutetium(III) oxide (Lu2O3, CAS: 12032-20-1) is a high-purity inorganic compound with a molecular weight of 397.93 g/mol. This white powder is a valuable material in advanced applications, particularly within catalysis and materials science. Its unique properties make it essential for specialised chemical syntheses and in the development of novel metal and ceramic materials.
- IUPAC
- Cassiopeium oxide
- Synonyms
- Cassiopeium oxide

Catalysis
Lutetium(III) oxide serves as a component in heterogeneous catalysts. Its thermal stability and chemical properties are beneficial in promoting specific chemical reactions in industrial processes.
Materials Science
It is utilised in the creation of advanced ceramics and optical materials. Its incorporation can enhance properties such as refractive index and thermal resistance in specialised glass formulations.
Chemical Synthesis
As a source of lutetium, this oxide is employed in inorganic synthesis pathways for creating lutetium-containing compounds and doped materials.
| Molecular weight | 397.93 |
|---|---|
| Linear formula | Lu2O3 |
| Assay | 99.99% trace metals basis |
| Form | powder |
| Density | 9.42 g/mL at 25 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Lutetium (III) oxide used for?
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Lutetium (III) oxide is used in catalysis, materials science for advanced ceramics and optical materials, and in chemical synthesis pathways for lutetium-containing compounds.
What are the CAS number and formula for Lutetium (III) oxide?
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The CAS number for Lutetium (III) oxide is 12032-20-1 and its chemical formula is Lu2O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Lutetium (III) oxide with an assay of 99.99% trace metals basis. We do not represent this product as USP, BP, or EP grade.
How should Lutetium (III) oxide be handled safely?
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Lutetium (III) oxide is classified as a Warning substance. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation.
Is Lutetium (III) oxide a controlled substance?
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Based on the provided data, Lutetium (III) oxide is not indicated as a controlled or scheduled substance.
How can I request a quote or sample?
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To request a quote or sample of Lutetium (III) oxide, please contact our sales department via the website or direct inquiry channels.
How is Lutetium (III) oxide packed and exported?
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Lutetium (III) oxide is typically supplied as a powder and exported in compliance with relevant chemical shipping regulations. Specific packaging details can be provided upon request.
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