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The active biocidal component of Oxine® system is free chlorine dioxide. Unactivated Oxine® in the neutral to mildly alkaline pH range is bacteriostatic. For higher level microbial control, such as disinfection and sanitation, activation of Oxine® is required to generate free chlorine dioxide. The use of citric acid as an activator is specified in most Oxine® label applications. Alternatives to citric acid for activation include organic acids, such as acetic acid, and inorganic acids such as phosphoric, hydrochloric, and sulfuric acids. Activation equivalent to that of citric acid may be achieved by adjusting the Oxine® solution to pH 2-3 with an alternative acid. The activated Oxine® is then diluted to the required use concentration in accordance with label instructions. For food processing applications only food grade activator acids may be used. Bio-Cide International, Inc or your Oxine® distributor can guide you in proper activation techniques.
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