Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between reagents in different phases by transferring ions into organic solvents. Its bicarbonate anion acts as a weak base, making it suitable for acid-sensitive substrates and reactions requiring mild basic conditions. Commonly employed in nucleophilic substitutions, alkylations, esterifications, and carboxylation reactions, where it releases carbon dioxide slowly and controllably to aid in synthesizing carboxylic acids and other carboxyl-containing compounds. Also utilized in the preparation of functionalized polymers and in electrochemical applications as a supporting electrolyte. Stable under a range of conditions, it enables efficient and selective transformations in both laboratory and industrial processes, increasing reaction rates and yields.