Cerium(IV) oxide
A metal oxide with formula CeO2. It is used for polishing glass, in coatings for infra-red filters to prevent reflection, and as an oxidant and catalyst in organic synthesis. — ChEBI
Safety documents & references
1 indexed referencesFind a product-specific SDS
Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.
Identity & molecular properties
Source-linked values| CAS number | 1306-38-3 | ChEBI ↗ |
| Molecular formula | CeO2 | ChEBI ↗ |
| Molar mass | 172.114 g/mol | ChEBI ↗ |
| Monoisotopic mass | 171.89527 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:79089 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 172.115 g/mol | PubChem ↗ |
| Exact mass | 171.89528 Da | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifierceric oxidedioxoceriumCETPSERCERDGAM-UHFFFAOYSA-N[O]=[Ce]=[O]InChI=1S/Ce.2ONames & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologySafety classification · Japan
NITE / Japanese governmentCerium(IV) oxide · 22A4064
| Endpoint | Reported classification |
|---|---|
| Specific target organ toxicity - Single exposure | Category 2 (lung) |
| Specific target organ toxicity - Repeated exposure | Category 1 (lung) |
Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.
Read the original NITE classificationMass ↔ amount of substance
Calculated from sourced massUses 172.114 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCeOCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.