Cesium chloride is widely utilized as a precursor for source of cesium ions. It finds an application in analytical chemistry and acts as a reagent to identify inorganic ions like aluminum, gallium and chromium by the color and morphology of the precipitate. Its radioisotopes are employed in nuclear medicine applications such as treatment of cancer and diagnosis of myocardial infarction. Occasionally, it can act as a phase transfer catalyst in selected organic reactions. It is applied in the manufacturing of electrically conducting glasses and screens of cathode ray tubes.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.