Tributylbenzylammonium bromide is a quaternary ammonium salt, composed of a positively charged N-benzyl-N,N-dibutylbutan-1-aminium cation and a negatively charged bromide anion. This compound is commonly utilized as a surfactant and emulsifier in various applications such as detergents, fabric softeners, and personal care products. It also exhibits antibacterial properties, making it useful as a disinfectant or preservative in certain products.