Patent ID: 9521841
Filing Date: 2016-12-20
CPC Classification: A01N,A23L,A23V,C01B

Claim Text:
1. A process for producing an aqueous chlorous acid solution, comprising the steps of: forming a chlorous acid-containing solution using aqueous sodium chlorate solution and sulfuric acid or aqueous solution thereof as starting materials; and adding to the chlorous acid-containing solution at least one compound selected from the group consisting of inorganic and organic acids and salts or a combination thereof, to provide long-term stabilization of said chlorous acid for delaying the conversion of chlorous acid to chlorine dioxide and produce the aqueous chlorous acid solution in a form that is capable of sustaining chlorous acid for an extended time of 30 days, wherein the pH of the aqueous chlorous acid solution is in the range of 3.2 to 7.0.