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
Quick answers about Cerium(IV) oxide
Identity · formula · massWhat is Cerium(IV) oxide, CAS 1306-38-3?
Cerium(IV) oxide is the substance linked to CAS 1306-38-3 in ChEBI entry CHEBI:79089. The reported formula is CeO2. Confirm the structural identifiers when distinguishing salts, hydrates, isomers or isotopically labelled materials.
Source ↗What is the molar mass of Cerium(IV) oxide?
The ChEBI-reported molar mass is 172.114 g/mol for formula CeO2. Its source-reported monoisotopic mass is 171.89527 Da; that uses a specific isotope composition and is a different quantity.
Source ↗Which PubChem properties are available for Cerium(IV) oxide?
CID 73963 is connected to this record by an exact InChIKey match. PubChem reports exact mass 171.89528 Da. Values and source conventions are shown separately in the property tables below.
Source ↗Identity & molecular properties
Source-linked values| CAS number | 1306-38-3 | ChEBI ↗ |
| Chemical 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 ↗ |
PubChem molecular properties
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 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.
Safety 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; basis: the substance and formula represented in 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.