Benzalkonium Chloride is a type of chemical compound known as a quaternary ammonium compound. It is commonly used as a disinfectant and antiseptic due to its ability to kill bacteria, viruses, and fungi. This makes it a popular ingredient in various cleaning products, hand sanitizers, and personal care items. In addition to its antimicrobial properties, Benzalkonium Chloride is also used as a preservative in some pharmaceuticals and cosmetics. It helps to prevent the growth of harmful microorganisms, ensuring the safety and longevity of these products. However, it can cause skin irritation in some individuals, so caution is advised when using products containing it.