kromioksidivihreän

Kromioksidivihreä is the Finnish name for the inorganic chemical compound chromium(III) oxide, with the formula Cr2O3. It is an important pigment known for its vibrant green color and excellent stability. This compound occurs naturally as the mineral eskolaite, though it is more commonly produced synthetically for industrial applications.

Chromium(III) oxide is highly insoluble in water and most acids and alkalis, contributing to its durability as a pigment. Its production typically involves the calcination of chromium compounds, such as ammonium dichromate or chromium hydroxide. The resulting powder is then processed to achieve the desired particle size and purity.

Due to its intense green color and resistance to fading, heat, and chemicals, kromioksidivihreä has found widespread use. It is a key ingredient in paints, ceramics, glass, and enamels. In the construction industry, it is used to color concrete, tiles, and roofing materials. Its non-toxic nature also makes it suitable for use in cosmetics and plastics. Furthermore, chromium(III) oxide serves as a catalyst in various chemical reactions and is employed in the manufacture of refractory materials due to its high melting point.