Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases. Commonly employed in the preparation of pharmaceuticals and fine chemicals. Acts as an electrolyte in electrochemical applications, such as batteries and supercapacitors, enhancing conductivity in non-aqueous solutions and improving system stability. Utilized in the synthesis of ionic liquids, which are applied in green chemistry and catalysis. Also serves as a stabilizer in polymer production, improving the properties of the final material. Additionally, finds use in separation processes and chemical analysis.