CuSO₄·5H₂O, commonly known as copper(II) sulfate pentahydrate, is a blue crystalline solid that contains copper, sulfur, and oxygen. It consists of one copper ion (Cu²⁺), one sulfate ion (SO₄²⁻), and five water molecules (H₂O) associated with each formula unit. This compound is often used in agriculture as a fungicide and herbicide, as well as in various chemical processes. In addition to its agricultural applications, CuSO₄·5H₂O is utilized in laboratories for experiments and demonstrations, particularly in the study of chemical reactions and hydration. It is also a key component in the production of other copper compounds and is used in electroplating and metal processing.