Used as a biocide in water treatment systems, particularly in cooling towers and industrial water circuits, to control microbial growth including bacteria, algae, and fungi. Its dual quaternary ammonium structure enhances membrane disruption in microorganisms, making it effective at low concentrations. Also employed as a disinfectant in oilfield operations to prevent biofouling and souring caused by sulfate-reducing bacteria.

Additionally, it serves as a starting material in the synthesis of cationic surfactants, especially for the textile and leather industries, to improve water penetration and dye adhesion properties. It is used in controlled drug delivery systems as a carrier to facilitate the entry of active substances into cells due to its effective interaction with cell membranes.

Furthermore, it functions as a phase-transfer catalyst in organic synthesis and as a surface modifier in nanomaterial preparation, such as creating stable microcapsules or liposomes, owing to its long hydrophobic chain and ionic character.