Used as a biocide and disinfectant in industrial and institutional settings, particularly in water treatment systems to control microbial growth. Effective against bacteria, algae, and fungi due to its surfactant properties that disrupt cell membranes. Commonly formulated into cooling tower treatments, metalworking fluids, and hard surface disinfectants. Also serves as a phase transfer catalyst in organic synthesis and functions as a cationic surfactant in specialty cleaning products where antimicrobial action is required. Additionally, it is utilized in personal care products such as hair conditioners and skin creams, providing softening, antistatic, and moisture-retaining properties by coating hair and skin surfaces.