Method for producing chlorous acid water preparation in which chlorous acid water, chlorous acid as main effective component thereof, and chlorine peroxide radicals as active molecular species thereof have been more efficiently stabilized in liquid at ordinarily temperature in high and low concentrations

By formulating chlorous acid water with citrate or phosphate buffers, the stability and efficacy of chlorous acid and its chlorine peroxide radicals are enhanced, addressing the challenge of long-term maintenance and ensuring effective antibacterial and disinfectant properties.

WO2025239363A1 Publication Date: 2025-11-20SANKEI BOORUTOYUUGEN
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Patent Information

Application Number
PCT/JP2025/017425
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-14
Filing Date
2025-05-13
Publication Date
2025-11-20

AI Technical Summary

Technical Problem

Existing methods struggle to maintain chlorous acid water, its main active ingredient hypochlorous acid, and its active molecular species chlorine peroxide radicals in liquid form at room temperature for extended periods, especially in high and low concentration ranges, limiting its effectiveness as an antibacterial and disinfectant agent.

Method used

A method involving the formulation of chlorous acid water with a buffer solution, specifically citrate or phosphate buffers, to stabilize chlorous acid and its active molecular species, chlorine peroxide radicals, by adjusting the concentration and liquid ratios to extend the scientific quality for up to three years.

Benefits of technology

The method effectively maintains the stability and bactericidal properties of chlorous acid water and its active species for prolonged periods, ensuring effective antibacterial and disinfectant performance even in the presence of organic matter.

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Abstract

Provided is a method for producing a chlorous acid water preparation in which chlorous acid water, chlorous acid as a main effective component thereof, and chlorine peroxide radicals as active molecular species thereof have been more efficiently stabilized in the liquid at ordinary temperature in high and low concentrations. The method is for producing a chlorous acid water preparation having a predetermined content (in terms of chlorous acid (HClO2=68.46)), and comprises: (1) preparing a buffer solution; (2) obtaining the concentration of the buffer solution; (3) preparing chlorous acid water; (4) obtaining a content in the chlorous acid water (in terms of chlorous acid (HClO2=68.46)); (5) obtaining an amount of the buffer solution required for dilution, from the content in the chlorous acid water (in terms of chlorous acid (HClO2=68.46)) and the predetermined content (in terms of chlorous acid (HClO2=68.46)); and (6) diluting the chlorous acid water with said amount of the buffer solution to produce a chlorous acid water preparation having the predetermined content (in terms of chlorous acid (HClO2=68.46)).
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