Cerium Oxide

Description

Cerium Oxide · CAS 1306-38-3 · CeO2. UNII 619G5K328Y. Melting Point: 2600 °C; Density: 7.65 @25 °C.

Identification

CAS Registry Number	1306-38-3
PubChem CID	73963
Molecular formula	CeO2
IUPAC name	dioxocerium
UNII (FDA)	619G5K328Y

Computed Descriptors

Molecular Weight	172.115
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	171.89528
Monoisotopic Mass	171.89528
Topological Polar Surface Area	34.1
Heavy Atom Count	3
Formal Charge	0
Complexity	18.3

Physical & Chemical Properties

Melting Point	2600 °C
Density	7.65 @25 °C

Physical description & handling notes

• Dry Powder; Other Solid; Dry Powder; Other Solid; Wet Solid; Large Crystals; CBI
• White (pure) to pale yellow crystals; Insoluble in water; [Merck Index]

GHS Hazard Classification

Reported hazard statements	H371, H372

Documented 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]
• Processing aids, specific to petroleum production
• Processing aids not otherwise specified
• 2023: 2,500,000 - <4,000,000 lb
• 2022: 2,500,000 - <4,000,000 lb

Synonyms

Ceric oxide; 1306-38-3; Ceria; Ceric dioxide; Cerium(IV)dioxide; Needlal; Nidoral; Opaline; Cerium(4+) oxide; Needlal U15; Needlal W15; Molycomp 5310; CHEBI:79089; 619G5K328Y; Cerium Oxydatum; RefChem:58009

Frequently Asked Questions

What are the CAS number and molecular formula of Cerium Oxide?

CAS 1306-38-3; molecular formula CeO2; molecular weight — g/mol.

What other names is Cerium Oxide known by?

Ceric oxide, 1306-38-3, Ceria, Ceric dioxide, Cerium(IV)dioxide, Needlal.

Is Cerium Oxide classified as hazardous?

Hazard statements reported: H371, H372.

What are the key physical properties of Cerium Oxide?

Melting Point: 2600 °C; Density: 7.65 @25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.