Properties of Chromium(III) Oxide

Chromium(III) oxide, also known as chromium oxide green or chromic oxide, is an inorganic compound with the chemical formula Cr₂O₃. This compound is well known for its distinctive green colour, excellent chemical stability, and outstanding resistance to heat, light, and corrosion.

Chromium(III) oxide is a fine green powder that is practically insoluble in water and has a very high melting point. Due to its durability and excellent colour stability, it is widely used as a green pigment and as a technical material in various industrial applications.

Chemical properties:

• Chemical formula: Cr₂O₃
• CAS number: 1308-38-9
• Molecular weight: 151.99 g/mol
• Appearance: Green powder
• Solubility: Insoluble in water
• High thermal stability
• Excellent resistance to corrosion and chemical attack

What is Chromium(III) Oxide used for?

Thanks to its unique combination of colour stability, temperature resistance, and durability, chromium(III) oxide has a wide range of industrial and laboratory applications.

Pigments and Colourants

Chromium(III) oxide is widely used as a green pigment in paints, coatings, ceramics, glass, and plastics. It is valued for its excellent colour retention and resistance to UV radiation, weathering, and high temperatures.

Ceramic and Glass Industry

In the ceramic industry, chromium(III) oxide is used to create durable green shades in tiles, porcelain, glazes, and glass products. Its high stability makes it suitable for applications where long-lasting colours are required.

Metallurgy and Surface Treatment

Due to its high hardness and wear resistance, chromium(III) oxide is used in specialised coatings and polishing compounds, including the fine polishing of metal surfaces and technical materials.

Laboratory Applications

Chromium(III) oxide is used as a raw material and chemical compound in scientific research, material science, and various industrial laboratory applications.

Abrasive and Polishing Materials

Because of its fine particle structure and hardness, chromium(III) oxide is used for polishing metals, gemstones, and other technical materials where a high-quality surface finish is required.

Safety Measures When Handling Chromium(III) Oxide

Although chromium(III) oxide is considerably more stable and less hazardous than hexavalent chromium compounds (Cr(VI)), it should always be handled with appropriate care.

Recommended safety measures:

• Avoid inhalation of dust particles.
• Wear suitable personal protective equipment, such as gloves and safety goggles.
• Work in a well-ventilated area or under appropriate local exhaust ventilation.
• Avoid contact with eyes and skin.
• Store the product tightly sealed in a dry location.
• Always consult the Safety Data Sheet (SDS) before use.

For professional applications, all applicable safety regulations and workplace procedures should be followed.

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Whether you work in research, production, education, or industry, Laboratoriumdiscounter provides reliable chemical products for a wide range of professional applications.