Cerium(IV) Oxide

CeO₂

IUPAC: Cerium(IV) oxide

CAS: 1306-38-3

Overview

Cerium(IV) oxide is the most commercially important compound of cerium, the most abundant rare earth element. It is used as a polishing agent for glass and as a key component in automotive catalytic converters. It can store and release oxygen reversibly.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 2 15.9990
Cerium Ce 1 140.1200

Elemental Composition

O
Oxygen ×2
18.6%
Ce
Cerium ×1
81.4%

Uses

  • • Glass polishing agent
  • • Catalytic converter component
  • • Diesel fuel additive
  • • UV-absorbing coating

Fun Facts

  • ✦ Nearly every piece of precision optical glass has been polished with cerium oxide

Safety

  • ⚠ Low toxicity
  • ⚠ Dust inhalation should be avoided

Structure

SMILES

O=[Ce]=O

Properties

Type
oxide
State
solid
Molar Mass
172.12 g/mol
Density
7.2150 g/cm³
Melting Point
2400.0 °C
Solubility
insoluble

Molecular Descriptors

Exact Mass
171.8953
TPSA
34.1 Ų
H-Bond Donors
0
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
18.0

Also Known As

Ceria Cerium dioxide

Related Compounds

Aluminum Oxide

Al₂O₃

Antimony Trioxide

Sb₂O₃

Barium Oxide

BaO

Beryllium Oxide

BeO

Bismuth(III) Oxide

Bi₂O₃

Boron Trioxide

B₂O₃

Cadmium Oxide

CdO

Calcium Oxide

CaO

Carbon Dioxide

CO₂

Carbon Monoxide

CO

Frequently Asked Questions

What is Cerium(IV) Oxide?
Cerium(IV) Oxide (CeO₂) is a oxide compound with the IUPAC name Cerium(IV) oxide.
What is the molecular weight of Cerium(IV) Oxide?
Cerium(IV) Oxide has a molar mass of 172.115 g/mol.
What state is Cerium(IV) Oxide at room temperature?
Cerium(IV) Oxide is a solid at room temperature.
Is Cerium(IV) Oxide organic or inorganic?
Cerium(IV) Oxide is classified as an inorganic compound.
What elements make up Cerium(IV) Oxide?
Cerium(IV) Oxide (CeO₂) is composed of Oxygen (O), Cerium (Ce).