kopparIIhydroxid

Koppar(II)hydroxid is an inorganic chemical compound with the formula Cu(OH)₂. It is a blue or greenish-blue solid that is insoluble in water. Koppar(II)hydroxid is formed when a soluble copper(II) salt, such as copper(II) sulfate, is mixed with a strong base, like sodium hydroxide. The reaction is a precipitation reaction, where the insoluble koppar(II)hydroxid forms as a solid.

This compound occurs naturally in the mineral form called brochantite. Koppar(II)hydroxid is used in various applications. It serves as a fungicide and pesticide in agriculture, helping to protect crops from fungal diseases. It is also employed as a pigment in paints and ceramics, contributing to blue and green coloration. Historically, it has been used in some traditional remedies, though its medicinal use is largely superseded by more modern treatments. When heated, koppar(II)hydroxid decomposes into copper(II) oxide and water. It can also react with acids to form copper(II) salts and water.