Used as a catalyst in organic synthesis, particularly in esterification and transesterification reactions. It facilitates the production of biofuels by promoting the conversion of triglycerides into methyl esters under mild conditions. Also employed in the pharmaceutical industry as a reagent in the preparation of cesium-containing compounds due to its solubility and stability in polar solvents. Its role as a phase-transfer catalyst enhances reaction rates in biphasic systems. Additionally, it finds use in specialty chemical formulations where a non-hygroscopic, thermally stable cesium source is required.