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chromium(III) oxide
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chromium(III) oxide

chemical compound
Also known as: chromic oxide, chromium sesquioxide
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Quick Summary

Chromium(III) oxide, also known as chromic oxide, is a chemical compound with the formula Cr₂O₃. It appears as a green powder and is derived from the thermal decomposition of most chromium compounds or the reduction of sodium dichromate or sodium chromate.1

This compound has several practical applications:
* Pigment: It is used as a very permanent pigment called chrome oxide green.1
* Coloring Agent: It serves as a coloring agent for glass and ceramic ware.1
* Catalyst: It functions as a catalyst in various industrial processes.12

Chromium itself is a hard, steel-gray metal known for its strength and corrosion resistance when used in alloys. The name "chromium" originates from the Greek word for "color" due to the vibrant and varied colors of its compounds. Chromium(III) oxide is one of the principal oxygen compounds of chromium, where chromium is in the +3 oxidation state.2

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
3 Britannica Sources
  1. chromic oxide
  2. chromium
  3. chromite

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