Used as a cationic surfactant and fabric softener in laundry products, providing anti-static and softening properties to fabrics. It is also incorporated into hair conditioners and personal care products for its ability to reduce static and improve manageability. Additionally, it acts as a biocide in some industrial water treatment systems due to its antimicrobial properties. Commonly found in disinfectants and sanitizing solutions where it helps in reducing microbial load on surfaces.