Chromium(III) Oxide

Cr₂O₃

IUPAC: Chromium(III) oxide

CAS: 1308-38-9

Overview

Chromium(III) oxide is a stable green pigment known as chrome green. It is one of the most durable inorganic pigments with excellent heat and chemical resistance.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 3 15.9990
Chromium Cr 2 51.9960

Elemental Composition

O
Oxygen ×3
31.6%
Cr
Chromium ×2
68.4%

Uses

  • • Green pigment
  • • Abrasive
  • • Metallurgical flux
  • • Catalyst

Fun Facts

  • ✦ Used to color the US dollar bill and military camouflage

Structure

SMILES

O=[Cr]O[Cr]=O

Properties

Type
oxide
State
solid
Molar Mass
151.99 g/mol
Density
5.2200 g/cm³
Melting Point
2435.0 °C
Boiling Point
4000.0 °C
Solubility
insoluble

Molecular Descriptors

Exact Mass
151.8658
TPSA
43.4 Ų
H-Bond Donors
0
H-Bond Acceptors
3
Rotatable Bonds
0
Heavy Atoms
5
Complexity
34.0

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 Chromium(III) Oxide?
Chromium(III) Oxide (Cr₂O₃) is a oxide compound with the IUPAC name Chromium(III) oxide.
What is the molecular weight of Chromium(III) Oxide?
Chromium(III) Oxide has a molar mass of 151.99 g/mol.
What state is Chromium(III) Oxide at room temperature?
Chromium(III) Oxide is a solid at room temperature.
Is Chromium(III) Oxide organic or inorganic?
Chromium(III) Oxide is classified as an inorganic compound.
What elements make up Chromium(III) Oxide?
Chromium(III) Oxide (Cr₂O₃) is composed of Oxygen (O), Chromium (Cr).