Displaying 5 results of Benzalkonium Chloride Stable Isotopes Benzalkonium chloride (BAC) stable isotopes are a set of isotopically labelled compounds used in research and development. BAC is a commonly used disinfectant and preservative in various industries, and its isotopically labelled analogues are valuable tools for studying its biological and chemical properties. These stable isotopes have identical chemical and physical properties as non-labelled compounds, but can be distinguished and tracked using mass spectrometry.