Benzalkonium Chloride Hand Sanitizer Antibacterial Effect
Duley bs b john w.
Benzalkonium chloride hand sanitizer antibacterial effect. Recently alcohol free hand sanitizers with triclosan or benzalkonium chloride have been gaining ground due to concerns that ethanol is dries out the skin is too toxic and there are frequent cases of intentional ingestion 10 14 17. Since the outbreak of covid 19 sales of hand sanitizers have soared. Researchers at the los alamitos unified school district in california conducted a five week study in 2001 and found that students who used hand sanitizer containing benzalkonium chloride at scheduled times each day were 33 percent less likely to be absent due to illness. Usually alcohol based hand sanitisers contain between 60 95 alcohol.
Hand hygiene says it s difficult to assess the effectiveness of alcohol free hand sanitizers because no standardized ingredient exists 1 2. Benzalkonium chloride bak otherwise known as alkyl dimethyl benzyl ammonium chloride is a toxic chemical used in cosmetics it is a antimicrobial agent deodorant surfactant and a preservative. Benzalkonium chloride is primarily used as a preservative and antimicrobial agent and secondarily used as a surfactant. It works by killing microorganisms and inhibiting their future growth and for this reason frequently appears as an ingredient in antibacterial hand wipes antiseptic creams and anti itch ointments.
It s become such a sought after product that pharmacies and supermarkets have started limiting the number that people can. 1 under laboratory conditions benzalkonium chloride demonstrates decent activity against some bacteria fungi and enveloped viruses. A hand sanitizer monograph. What is benzalkonium chloride used for.
Manufacturers add other ingredients for various reasons. Demonstrating the persistent antibacterial efficacy of a hand sanitizer containing benzalkonium chloride on human skin at 1 2 and 4 hours after application author links open overlay panel sidney w. However a potential negative effect is that the active ingredients will irritate the skin because of their continued presence on the skin surface. These ingredients are also key in non alcohol based sanitisers.
Bondurant md a collette m. This study was performed to evaluate the effectiveness of a new commercially available hand sanitizer using 0 12 benzalkonium chloride bzk as the active ingredient in reducing transient skin contamination with staphylococcus aureus in health care workers hcws as compared with the effectiveness of a 70 ethanol based hand sanitizer. The antimicrobial effects of quaternary ammonium compounds qacs such as benzalkonium chloride were first described in the 1900s. However practical results.
Aden andrus academic medical research technical 3. Ingredients such as glycerol.
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