Copper(II) sulfate, often represented as CuSO4, is an inorganic compound composed of copper, sulfur, and oxygen. It typically appears as a blue crystalline solid and is commonly found in its pentahydrate form, CuSO4·5H2O, which is bright blue. This compound is widely used in agriculture as a fungicide and herbicide, as well as in various industrial processes. In addition to its agricultural applications, copper(II) sulfate is utilized in laboratories for chemical experiments and as a reagent. It also plays a role in the production of copper and in the manufacturing of copper(II) oxide. Safety precautions are necessary when handling this compound, as it can be toxic in large quantities.