Used as a phase-transfer catalyst in organic synthesis, enabling reactions between compounds in different phases by transferring ions into organic solvents. Commonly applied in the production of pharmaceuticals, agrochemicals, and fine chemicals. Serves as a strong base in deprotonation reactions and in the preparation of other quaternary ammonium compounds. Also utilized in analytical chemistry for titrations and as a reagent in spectrophotometric analysis. Its solution form makes it convenient for use in liquid-phase reactions and industrial processes requiring a soluble, organic-compatible base.