Basic information
- CAS
1306-38-3- Standard SMILES
[O]=[Ce]=[O]- InChIKey
CETPSERCERDGAM-UHFFFAOYSA-N- Molecular formula
- CeO2
- Average molar mass
- 172.115 g/mol
Overview
Ceric oxide is 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. It is a metal oxide and a cerium molecular entity.
Names & identifiers
- Preferred name
- Ceria
- IUPAC
- dioxocerium
- English name
- Cerium dioxide
- Molecular formula
- CeO2
- Molecular weight
- 172.11
Names & synonyms
Ceric oxide1306-38-3CeriaCeric dioxideCerium(IV)dioxideNeedlalNidoralOpalineCerium(4+) oxideNeedlal U15Needlal W15Molycomp 5310
Show more names
CeO2Cerium(IV) oxideCERIUM HYDROXIDECERIUM (IV) HYDROXIDEanti-bacterial agentsCerium Oxide Polishing PowderCerium oxide nanoparticleCerium(IV) oxide, REacton(R), 99.9% (REO)XFI27
CHEBI:79089619G5K328YCerium OxydatumRefChem:58009DTXCID801509322215-150-4DTXSID4040214Cerium dioxide
Database identifiers
- CAS
1306-38-3- PubChem CID
- 73963
- ChEBI
CHEBI:79089- EC Number
- 215-150-4
- Nikkaji
- J308.974F
Properties
Computed structural properties
- Topological polar surface area
- 34.1 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 3
- Formal charge
- 0
- Complexity
- 18.3
Experimental & physicochemical properties
Chemical ClassesMetals -> Rare Earth Metals
PesticidesPesticide -> EPA IRIS
Density7.65 @25 °C
Melting Point2600 °C
Physical Description
Dry Powder; Other Solid; Dry Powder; Other Solid; Wet Solid; Large Crystals; CBI
White (pure) to pale yellow crystals; Insoluble in water; [Merck Index]
Physicochemical properties
- Melting point
- 2600 °C · 2600°C
- Boiling point
- 3500 °C · 3500 °C
- bulk density
- 1280 kg/m3 · 1280kg/m3
- Density
- 7.13 g/mL · 7.13 g/mL at 25 °C(lit.)
- storage temp.
- Storage temperature: no restrictions.
- solubility
- 2 O, · insoluble in H2O, dilute acid solutions
- form
- powder
Safety & regulation
GHS classification
GHS Classification
Not Classified
Aggregated GHS information provided per 651 reports by companies from 11 notifications to the ECHA C&L Inventory.
Danger
H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]
P260, P264, P270, P308+P316, P319, P405, and P501 (click each P-code to see the statement)
Hazard information
Regulatory Information
Chemical: Cerium oxide, (CeO2)
Cerium oxide (CeO2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cerium oxide (CeO2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 10-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15783
Cerium (IV) oxide: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - Cerium oxide, (CeO2): Human health tier I assessment
Hazards SummaryStudies indicate that cerium oxide nanoparticles have antiinflammatory effects; [HSDB] See Cerium. See RARE EARTH METALS and linked occupational diseases.
Hazard Classes and Categories
Not Classified
Specific target organ toxicity - Single exposure - Category 2 (lung)
Safety & protection
Exposure Control and Personal Protection0.002 [mg/m3], respiratory fraction (also for cerium compounds)[German Research Foundation (DFG)]
Chemistry & industry
Uses & manufacturing
Uses
Used to polish and decolorize glass, to opacify enamels, to analyze chemicals, to catalyze organic reactions, and to make coatings for heat-resistant alloys and infrared filters; [Merck Index] Cerium oxide nanoparticles are used in diesel fuel as combustion catalysts; [HSDB] Nanoparticles are used in solar and fuel cells, gas sensors, abrasives, oxygen pumps, and other metallurgic, glass, and ceramic applications; [PMID 21191487]
Glass Manufacturing [Category: Industry]
U.S. Production2023: 2,500,000 - <4,000,000 lb
Consumer UsesAbrasives
Industry UsesDrier
General Manufacturing Information
All Other Basic Inorganic Chemical Manufacturing
Cerium oxide (CeO2): ACTIVE
Applications
DescriptionCerium (IV) oxide (chemical formula: CeO2) is an oxide of the rare earth metal cerium. It appears as yellow-white powder. It is an important intermediate during the purification of the Ce element from the ores. It is mainly used in formulations in industry as a high-precision polishing agent for glass products. It can also be used in infrared filters, and used as an oxidizing compound in the catalytic converters as well as a replacement for thorium dioxide in the incandescent mantles. It can also be used as oxidation catalyst due to its interconvertibility, e.g. in oxidation of the natural gas in gas mantles. It can also be used as a mixed conductor due to its significant ionic and electronic conduction. It can be manufactured by the calcination of cerium oxalate or cerium hydroxide.
UsesCerium Oxide, also called Ceria, is widely applied in glass, ceramics and catalyst manufacturing. In glass industry, it is considered to be the most efficient glass polishing agent for precision optical polishing. It is also used to decolorize glass by keeping iron in its ferrous state. The ability of Cerium-doped glass to block out ultra violet light is utilized in the manufacturing of medical glassware and aerospace windows. It is also used to prevent polymers from darkening in sunlight and to suppress discoloration of television glass. It is applied to optical components to improve performance. High purity Ceria are also used in phosphors and dopant to crystal.
Related reactions
5 records
Compound notes
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