Benzalkonium Chloride Structure - Chemical Formula & Molecular Diagram #2088173 (License: Personal Use)

This diagram illustrates benzalkonium chloride (BAC), a quaternary ammonium compound featuring a long hydrophobic alkyl chain (typically C12-C16), a benzyl group attached to a positively charged nitrogen atom, and a chloride counterion. The structure enables its function as a cationic surfactant, antimicrobial agent, and preservative in pharmaceuticals, cosmetics, and disinfectants. The variable alkyl chain length reflects commercial mixtures (e.g., C12 for BAC-12).

Used on chemistry, pharmacology, or microbiology web pages to explain antimicrobial mechanisms, formulation science, or safety data sheets; targets researchers, students, and formulators seeking structural insight into quaternary ammonium compounds.