Used primarily as a strong base in organic synthesis, it facilitates the deprotonation of weak acids, enabling the formation of carbanions. It is particularly valuable in the production of indigo dyes and pharmaceuticals, where it assists in condensation reactions. In the synthesis of sodium cyanide, it acts as a key intermediate. Additionally, it is employed in the Birch reduction process to generate radical anions from aromatic compounds. Its reactivity with water requires careful handling, often in anhydrous conditions, to prevent hazardous reactions.