Used as a base and catalyst in organic synthesis, particularly in coupling reactions such as the Suzuki and Heck reactions. It facilitates the formation of carbon-carbon bonds due to its high solubility in polar solvents and strong basicity. Employed in the preparation of pharmaceuticals, agrochemicals, and fine chemicals. Also utilized in the production of specialty glasses and optical materials for its ability to modify refractive index and thermal expansion properties. Plays a role in electrochemical applications and in the development of certain types of batteries.