Description

Cerium Oxide

For polishing, catalysis & advanced materials. Application suitability is grade-dependent — chemical identity alone does not establish polishing performance.

Cerium Oxide (CeO₂), also known as ceria or cerium dioxide, is a rare-earth oxide used in glass-polishing systems, catalyst formulations and materials development. Its redox and oxygen-storage behaviour supports a range of catalytic applications. Select the grade according to your process requirements.

Identity & reference properties

• Chemical Name : Cerium(IV) oxide / cerium dioxide / ceria
• Chemical Formula : CeO₂
• CAS Number : 1306-38-3
• Molecular Weight : 172.11 g/mol
• Typical Appearance : Pale yellow or cream powder; grade-dependent
• Water Solubility : Insoluble; aqueous formulations are dispersions
• Grade / Particle Size / Packing : To be confirmed against the approved specification

Reference properties only — appearance can vary with grade and processing. No purity, particle-size distribution or polishing-performance specification has been assigned to this draft.

Applications

• Glass and optical polishing — used in suitable polishing compounds and slurry systems; surface finish depends on the glass, particle distribution and the complete process.
• Catalysis — a component or support in ceria-based catalyst systems, valued for redox and oxygen-storage behaviour; validate the finished formulation for the intended reaction.
• Advanced materials — used in ceramic and ceria-based energy-material research, including formulated or doped systems; suitability depends on composition and processing.

These are established application areas, not performance guarantees for an unqualified Sontara grade. General cerium oxide powder is not automatically a finished polishing blend or ready-to-use catalyst. Cerium oxide is water-insoluble; a water-based formulation is a suspension or slurry, not a true solution. No nano-size or scratch-free claim is implied — particle size must be confirmed by supporting measurements and an approved specification.

Handling & Storage

Avoid generating or inhaling dust and prevent eye/skin contact. Use suitable ventilation, gloves, protective clothing and safety goggles. Keep tightly closed in a cool, dry, ventilated place, away from incompatible materials. Prevent release to drains. Follow the current product SDS and workplace exposure assessment for full controls, first aid, disposal and transport — the third-party reference SDS does not replace the SDS for the supplied grade.

Request a Quotation

Discuss your specification with Sontara Organo Industries. Share your application, required purity and particle size, quantity, preferred pack and destination. Request the approved specification, current SDS and batch COA.

For professional chemical use. Application suitability is grade-dependent. No food, pharmaceutical, cosmetic, drinking-water or finished catalyst/polishing-product approval is implied.

Sources & Technical Reading

1. Sigma-Aldrich 211575 — Cerium(IV) oxide: identity, CAS 1306-38-3 and molecular weight.
2. Thermo Scientific Chemicals 011328 — Cerium(IV) oxide: reference appearance and reported glass-polishing, ceramic and catalyst applications.
3. Cook, L. M. Chemical processes in glass polishing. Journal of Non-Crystalline Solids, 1990, 120, 152–171. DOI: 10.1016/0022-3093(90)90200-6.
4. Trovarelli, A. Catalytic Properties of Ceria and CeO₂-Containing Materials. Catalysis Reviews, 1996, 38, 439–520. DOI: 10.1080/01614949608006464.
5. Montini, T.; Melchionna, M.; Monai, M.; Fornasiero, P. Fundamentals and Catalytic Applications of CeO₂-Based Materials. Chemical Reviews, 2016, 116, 5987–6041. DOI: 10.1021/acs.chemrev.5b00603.
6. Thermo Fisher Scientific SDS 40581, Revision 21 December 2025 — reference, not a Sontara SDS.

References describe general chemistry or specific literature/supplier materials, not Sontara batch quality. Purity, particle size and approved specifications have not been supplied. The cited SDS belongs to another supplier.