Copper(II) Hydroxide, with the chemical formula Cu(OH)₂, is an inorganic compound composed of copper, oxygen, and hydrogen. It appears as a blue solid and is commonly used in various applications, including agriculture as a fungicide and in the production of pigments. This compound can be formed by reacting copper(II) salts with sodium hydroxide or by the precipitation of copper ions in alkaline solutions. Copper(II) Hydroxide is also studied for its potential use in water treatment and as a catalyst in chemical reactions.