Abstract: Process for the preparation of chlorite salts by the controlled reaction of chlorine dioxide with a reducing agent under reduced pressure to form chlorous acid. The chlorous acid is reacted with an aqueous solution of base to form the desired chlorite salt. The process is rapid, economical and is conducted in a generator which is significantly smaller than equipment currently used for production of chlorite salts.

Abstract: Petroleum production, refining, and mining disposable deposits and sediments are treated with an oxidizing agent such as chlorine dioxide and/or particle separation to reduce the mass of disposable materials. The invention has particular application in treating deposits and sediments which contain naturally occurring radioactive material (NORM).

Abstract: An aqueous solution, preferably an aqueous disinfectant solution, containing chlorine dioxide and which is capable of forming a foam, and methods for the preparation and use thereof. An aqueous disinfectant solution capable of forming a foam is prepared by adding a foaming agent, i.e., a suitable surfactant, to water. Chlorine dioxide may then be added to the solution or it may be generated in situ by reacting an oxidizing agent, a cationic exchange resin in the acidic form, or an acid with a metal chlorite dissolved therein. The resultant foam solution may subsequently be foamed by being mixed with air in a foam generator. The foam solutions of the instant invention are useful as cleaning and/or sanitizing agents.

Abstract: An aqueous solution, preferably an aqueous disinfectant solution, containing chlorine dioxide and which is capable of forming a foam, and methods for the preparation and use thereof. An aqueous disinfectant solution capable of forming a foam is prepared adding a foaming agent, i.e., a suitable surfactant, to water. Chlorine dioxide may then be added to the solution or it may be generated in situ by reacting an oxidizing agent, a cationic exchange resin in the acidic form, or an acid with a metal chlorite dissolved therein. The resultant foam solution may subsequently be foamed by being mixed with air in a foam generator. The foam solutions of the instant invention are useful as cleaning and/or sanitizing agents.

Abstract: A dry composition for the sustained, controlled production of gaseous chlorine dioxide comprising a dry, inert diluent; a metal chlorite selected from the group consisting of alkali metal chlorites and alkaline earth metal chlorites; and a dry agent capable of reacting with a metal chlorite in the dry state to produce chlorine dioxide, said agent being selected from the group consisting of dry oxidizing agents and dry acids. The composition of the invention is manufactured using solely dry constituents, thereby obviating an intensive drying step and resulting in substantial savings as well as simplifying the manufacturing process. The compositions of the invention find particular utility in applications involving the controlled generation of chlorine dioxide for a sustained period of time for the preservation of boxed fruits and vegetables during transportation or in deodorizing enclosed spaces such as refrigerators or lockers.

Abstract: The present invention is directed to a chlorine dioxide generation process. The Novel process of this invention utilizes concentrated hydrochloric acid solution reacted with concentrated sodium chlorite solution, without prior dilution of either reactant. Resulting in consistent high efficiency with respect to yield and chemical consumption.