Used as a catalyst or reagent in organic synthesis, particularly in cross-coupling reactions such as Suzuki and Heck reactions, where it helps facilitate carbon-carbon bond formation. It is valued for its solubility in polar solvents and ability to act as a mild base. Also employed in the preparation of cesium-containing materials for specialty glasses and in some electrochemical applications. Its low toxicity compared to other cesium salts makes it preferable in certain laboratory settings.