Chromium Oxide (Cr₂O₃) is a fine green powder widely used as a polishing compound, ceramic pigment, and industrial coloring agent. It is known for its deep green color and extremely fine abrasive properties.

Chromium oxide is commonly used as a pigment in inks, paints, and glass manufacturing, and it is also used as a colorant in ceramic glazes where it produces characteristic green tones.

Because of its very fine particle size and hardness, chromium oxide is also widely used as a polishing compound. It is commonly applied to leather strops, polishing wheels, and buffing surfaces to refine and polish metals, sharpen cutting tools, and produce smooth finishes on optical components.

How Chromium Oxide Is Used

Chromium oxide powder can be used in several ways depending on the application.

For polishing and stropping, the powder is applied to a polishing surface such as a leather strop, buffing wheel, or polishing pad. The abrasive particles help smooth surfaces and refine edges during polishing.

In ceramics and glazing applications, chromium oxide is added in small amounts to glaze mixtures to produce green coloration during firing.

It is also used in pigments and coatings where its stable green color provides durable coloring for inks, paints, and glass products.

Common Uses

• polishing metals and jewelry
• knife stropping compound
• optical polishing
• ceramic glaze colorant
• pigment for paints and inks
• glass coloring

Product Details

Size: 8 oz

Chemical Formula: Cr₂O₃
CAS Number: 1308-38-9

Appearance: Fine green powder
Use: Polishing compound and pigment