CsCl, or cesium chloride, is an inorganic compound composed of cesium and chlorine. It appears as a white crystalline solid and is highly soluble in water. CsCl is often used in laboratories for various applications, including as a reagent in chemical reactions and in the preparation of cesium salts. In addition to its laboratory uses, CsCl has applications in the field of medicine, particularly in radiation therapy. It can also be utilized in the production of cesium-based atomic clocks, which are essential for precise timekeeping and global positioning systems.