Cerium(IV) oxide
Cerium(IV) oxide (CAS: 1306-38-3, CeO2) is a highly stable, insoluble inorganic compound with a molecular weight of 172.11 g/mol. Supplied by Tech Serve Solutions as a nanoparticle dispersion, it exhibits excellent polishing and catalytic properties. This versatile oxide finds significant application in glass polishing, as a component in catalytic converters, and in the formulation of phosphors for lighting and display technologies. Its unique redox properties also make it valuable in advanced materials research.
- IUPAC
- Ceric oxide, ceria,Ceric oxide

Catalysis
Cerium(IV) oxide is widely used as a catalyst or catalyst support, particularly in automotive catalytic converters for exhaust gas treatment. Its ability to store and release oxygen (oxygen storage capacity) enhances the efficiency of oxidation and reduction reactions.
Glass Polishing
As a fine abrasive, cerium(IV) oxide nanoparticles are highly effective for polishing glass surfaces, including precision optics and electronic displays. The dispersion form facilitates uniform application and high-quality finishing.
Phosphors and Luminescent Materials
It serves as a host material or dopant in phosphors used for lighting, X-ray screens, and other luminescent applications. Its properties contribute to efficient light emission and colour tuning.
UV Absorption
Cerium(IV) oxide nanoparticles can absorb ultraviolet radiation, making them useful as UV-blocking additives in coatings, plastics, and sunscreens to protect materials and skin from UV damage.
| Molecular weight | 172.11 |
|---|---|
| Linear formula | CeO2 |
| Assay | 99.9% trace metals basis |
| Form | dispersionnanoparticles |
| Density | 7.13 g/mL at 25 °C(lit.) |
| pH | ~2.7 |
| Viscosity | 10 cP(lit.) |
| Particle size | <5 μm |
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Avg Part Size | 30-50 nm |
|---|
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 Cerium(IV) oxide used for?
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Cerium(IV) oxide is used in catalysis, glass polishing, as a component in phosphors, and for UV absorption due to its unique redox and abrasive properties.
What is the CAS number and formula for Cerium(IV) oxide?
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The CAS number for Cerium(IV) oxide is 1306-38-3 and its chemical formula is CeO2.
What grade and purity does Tech Serve Solutions supply for Cerium(IV) oxide?
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Tech Serve Solutions supplies Cerium(IV) oxide with an assay of 99.9% trace metals basis. We do not represent this product as USP, BP, or EP grade.
How should Cerium(IV) oxide be handled safely?
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Safe handling requires appropriate personal protective equipment, including eyeshields, face shields, and gloves. Depending on the exposure risk, respiratory protection such as a full-face respirator or a type ABEK respirator filter may be necessary.
How is Cerium(IV) oxide packaged and shipped?
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Cerium(IV) oxide is supplied as a nanoparticle dispersion. TSS can arrange for global export and shipping. Please contact us for specific packaging and logistics details.
How can I request a sample or quote for Cerium(IV) oxide?
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To request a sample or obtain a quotation, please contact our sales team through our website or by phone, providing the product name and CAS number (1306-38-3).
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