Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases, such as aqueous and organic. It is particularly effective in nucleophilic substitution reactions, where it helps transfer anions from the aqueous phase to the organic phase.

Applied in electrochemical studies as an electrolyte additive, enhancing the performance and stability of batteries and supercapacitors. Its ability to improve ion conductivity makes it valuable in energy storage systems.

Employed in the preparation of ionic liquids, which are used as solvents or reagents in green chemistry applications. Its thermal stability and low toxicity make it suitable for environmentally friendly processes.

Utilized in the synthesis of zeolites and other porous materials, where it acts as a structure-directing agent, influencing the formation of specific pore structures and sizes.

Also finds use in analytical chemistry as a reagent for ion-pair chromatography, aiding in the separation and detection of ionic compounds.