Method for stabilization of hypochlorous acid solution

Abstract

The embodiments herein provide a method for producing and storing a shelf stable hypochlorous acid solution. The method comprises the steps of mixing distilled water with sodium chloride having at least 99 percent purity to form a saline solution; electrolyzing the saline solution by passing the saline solution through a chamber having an anode and a cathode that are separated by a membrane constructed and arranged to only permit a migration of chemical ions in one direction there through so that a hypochlorous acid solution is formed on the anode side and a sodium hydroxide is formed on the cathode side; directing the hypochlorous acid solution to a container for storage; and stabilizing the hypochlorous acid solution with vacuum or inert gas blanketing within the container.

What is claimed is: 
     
         1 . A method for producing a shelf stable or shelf life extended hypochlorous acid solution comprising steps of:
 mixing distilled water with sodium chloride having at least 99 percent purity to form a saline solution;   electrolyzing the saline solution by passing the saline solution through a chamber having an anode positioned on an anode side and a cathode positioned on a cathode side, and wherein the anode side and the cathode side are separated by a membrane that is constructed and arranged to only permit the migration of chemical ions in one direction therethrough, and wherein a hypochlorous acid solution is formed on the anode side and a sodium hydroxide is formed on the cathode side;   directing the hypochlorous acid solution formed to a container for storage; and   stabilizing the hypochlorous acid solution with any one of vacuum and/or inert gas blanketing within the container;   wherein the container is selected to be an aerosol container, or a container with a unidirectional valve to prevent ambient air from entering the container, or an airless spray container or a container with specific parameters as noted: 1) MVTR (Moisture Vapor Transmission Rate) of the container being less than 10 g-mil/100 in, 2) Oxygen Transmission Rate (OTR) of the container being less than 150 cm 3 -mil/m 2 /24 hr and 3) Carbon Dioxide Transmission Rate (COTR) of the container being less than 550 cm 3 -mil/m 2 /24 hr.   
     
     
         2 . The method according to  claim 1 , wherein the vacuum and/or inert gas blanketing is performed using at least one inert gas selected from a group consisting of Nitrogen, Argon and Helium. 
     
     
         3 . The method according to  claim 1 , wherein the container is any one of an aerosol or a container with a unidirectional valve to prevent ambient air from entering the container, or airless spray container or a container with specific parameters as noted: 1) MVTR (Moisture Vapor Transmission Rate) of the container being less than 10 g-mil/100 in, 2) Oxygen Transmission Rate (OTR) of the container being less than 150 cm 3 -mil/m 2 /24 hr and 3) Carbon Dioxide Transmission Rate (COTR) of the container being less than 550 cm 3 -mil/m 2 /24 hr. 
     
     
         4 . The method according to  claim 1 , wherein the container is opaque. 
     
     
         5 . The method according to  claim 1 , wherein the aerosol container is coated with a polymer selected from a group consisting of polyethylene terephthalate (PET), Polyvinyl Chloride (PVC), Polylactic acid solution (PLA) or a metal. 
     
     
         6 . The method according to  claim 1 , wherein the container contains Titanium Dioxide (TiO 2 ) in a range of 2%-5% 
     
     
         7 . The method according to  claim 1 , wherein the hypochlorous acid solution further comprises freely available chlorine (FAC) in a range of 50-500 ppm. 
     
     
         8 . The method according to  claim 1 , wherein the hypochlorous acid solution has a pH in a range of 3.5-5.5.