Method for Producing Shelf Stable Hypochlorous Acid Solutions

摘要

A method for production and storage of hypochlorous acid is disclosed. The method comprises using high purity water achieved by a combination of softening and reverse osmosis steps. The shelf life is further improved by storing the hypochlorous acid in opaque PET bottles or Nylon/PE bags or nylon bags in a box. Solutions stored in opaque PET bottles exhibit the best stability. Anticipated uses of the extended life hypochlorous acid solution include sanitizer for food contact and non-food contact surfaces, a streak-free cleaner for smooth surfaces and a cut flower life extender. Other biocide uses include water treatment in oil and gas production, cooling tower, lazy river and swimming pools, process water distribution systems, drinking water, portable humidifier, fish tanks and treatment of metalworking fluids and lubricants.

主权项

1. A method for producing a shelf stable hypochlorous acid solution comprising:
treating tap water through a water softener to produce softened water having hardness less than 40 ppm; treating the softened water through a reverse osmosis system to produce softened purified water having less than 40 ppm alkalinity and less than 80 ppm total dissolved solids; combining the softened purified water with at least 99% pure sodium chloride to form a saline process solution; electrolyzing the saline process solution by passing the saline process solution through a chamber having an anode positioned on an anode side and a cathode positioned on a cathode side, the anode side and the cathode side being separated by a membrane constructed and arranged to only permit the migration of chemical ions in one direction therethrough; whereby a hypochlorous acid solution is formed on the anode side and a sodium hydroxide is formed on the cathode side and; the hypochlorous acid solution is directed to containers for distribution.