Lanthanum Oxide

La₂O₃

IUPAC: Lanthanum(III) oxide

CAS: 1312-81-8

Overview

Lanthanum oxide is used in optical glass, catalytic converters, and as a phosphate binder in medicine. It is a key rare earth oxide.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 3 15.9990
Lanthanum La 2 138.9100

Elemental Composition

O
Oxygen ×3
14.7%
La
Lanthanum ×2
85.3%

Uses

  • • Optical glass
  • • Catalytic converter
  • • Phosphate binder (renal patients)
  • • Camera lens coatings

Fun Facts

  • ✦ High-quality camera lenses use lanthanum glass for superior color correction

Structure

SMILES

[O-2].[O-2].[O-2].[La+3].[La+3]

Properties

Type
oxide
State
solid
Molar Mass
325.81 g/mol
Density
6.5100 g/cm³
Melting Point
2315.0 °C
Boiling Point
4200.0 °C
Solubility
insoluble

Molecular Descriptors

Exact Mass
325.7975
TPSA
3.0 Ų
H-Bond Donors
0
H-Bond Acceptors
3
Rotatable Bonds
0
Heavy Atoms
5
Complexity
0.0

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 Lanthanum Oxide?
Lanthanum Oxide (La₂O₃) is a oxide compound with the IUPAC name Lanthanum(III) oxide.
What is the molecular weight of Lanthanum Oxide?
Lanthanum Oxide has a molar mass of 325.81 g/mol.
What state is Lanthanum Oxide at room temperature?
Lanthanum Oxide is a solid at room temperature.
Is Lanthanum Oxide organic or inorganic?
Lanthanum Oxide is classified as an inorganic compound.
What elements make up Lanthanum Oxide?
Lanthanum Oxide (La₂O₃) is composed of Oxygen (O), Lanthanum (La).