Zirconium Dioxide

ZrO₂

IUPAC: Zirconium(IV) oxide

CAS: 1314-23-4

Overview

Zirconium dioxide is a white crystalline oxide with the highest melting point of any metal oxide. In its cubic form (stabilized with yttrium), it becomes cubic zirconia, a popular diamond simulant in jewelry. It is also an important ceramic material and ion conductor.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 2 15.9990
Zirconium Zr 1 91.2240

Elemental Composition

O
Oxygen ×2
26.0%
Zr
Zirconium ×1
74.0%

Uses

  • • Diamond simulant (cubic zirconia jewelry)
  • • Dental crowns and implants
  • • Oxygen sensor in car exhaust
  • • Thermal barrier coatings

Fun Facts

  • ✦ Cubic zirconia is so brilliant it was initially difficult to distinguish from real diamonds

Safety

  • ⚠ Low toxicity
  • ⚠ Inhalation of dust should be avoided

Structure

SMILES

O=[Zr]=O

Properties

Type
oxide
State
solid
Molar Mass
123.22 g/mol
Density
5.6800 g/cm³
Melting Point
2715.0 °C
Boiling Point
4300.0 °C
Solubility
insoluble

Molecular Descriptors

Exact Mass
121.8945
TPSA
34.1 Ų
H-Bond Donors
0
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
18.0

Also Known As

Zirconia Cubic zirconia (gem form)

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 Zirconium Dioxide?
Zirconium Dioxide (ZrO₂) is a oxide compound with the IUPAC name Zirconium(IV) oxide.
What is the molecular weight of Zirconium Dioxide?
Zirconium Dioxide has a molar mass of 123.218 g/mol.
What state is Zirconium Dioxide at room temperature?
Zirconium Dioxide is a solid at room temperature.
Is Zirconium Dioxide organic or inorganic?
Zirconium Dioxide is classified as an inorganic compound.
What elements make up Zirconium Dioxide?
Zirconium Dioxide (ZrO₂) is composed of Oxygen (O), Zirconium (Zr).