Thulium(III) oxide
Thulium(III) oxide (CAS: 12036-44-1; Formula: Tm 2O3) is a high-purity inorganic compound with a molecular weight of 385.87 g/mol. Supplied as a powder, this oxide finds application in areas such as catalysis, materials science, and as a dopant in various advanced technologies. Its unique properties make it valuable for specialised chemical synthesis and research applications.

Dopant in Materials Science
Thulium(III) oxide is utilised as a dopant to modify the optical and electrical properties of host materials, particularly in phosphors and laser crystals.
Catalysis Research
As an inorganic oxide, Tm2O3 can be investigated for its catalytic potential in various chemical reactions, contributing to advancements in chemical synthesis.
Alternative Energy Applications
The unique characteristics of thulium compounds are explored for potential roles in emerging alternative energy technologies, including solid oxide fuel cells and advanced ceramics.
Chemical Synthesis
This high-purity oxide serves as a precursor or reactant in the synthesis of complex inorganic compounds and novel materials for research and development.
| Molecular weight | 385.87 |
|---|---|
| Linear formula | Tm2O3 |
| Assay | 99.99% trace metals basis |
| Form | powder |

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 Thulium(III) oxide used for?
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Thulium(III) oxide is used as a dopant in materials science, particularly in phosphors and laser crystals, and is explored for applications in catalysis and alternative energy technologies. It also serves as a reagent in chemical synthesis.
What is the CAS number and chemical formula for Thulium(III) oxide?
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The CAS number is 12036-44-1 and the chemical formula is Tm2O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Thulium(III) oxide with an assay of 99.99% trace metals basis. This is a high-purity material suitable for research and specialised applications; it is not represented as USP, BP, or EP grade.
What are the safety precautions for handling Thulium(III) oxide?
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Thulium(III) oxide is classified with GHS07 symbol and 'Warning' signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended PPE includes a dust mask type N95 (US), eyeshields, and gloves. Handle in a well-ventilated area and avoid breathing dust.
How is Thulium(III) oxide packed and shipped?
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Thulium(III) oxide is typically supplied as a powder. TSS ensures robust packaging suitable for international export, adhering to all relevant shipping regulations for chemical goods.
How can I request a quote or sample for Thulium(III) oxide?
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To request a quote or sample for Thulium(III) oxide, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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