METHOD FOR PRODUCING AQUEOUS SOLUTION FOR DISINFECTION

To provide a method for producing an aqueous solution for disinfection having high disinfecting power and few adverse effects on the human body, etc.SOLUTION: Provided is a method for producing an aqueous solution for disinfection, the method including the steps of: preparing a mixed solution including sulfuric acid (H2SO4) and heavy water (D2O), the heavy water component accounting for 1.5-20 wt.%; and diluting and preparing the mixed solution with water (H2O) to bring the pH to 0.5 or more and less than 2.0. The method further includes the steps of: preparing sulfuric acid and heavy water by weighing, so that the heavy water component accounts for 1.5-20 wt.%, which is prescribed content; preparing, by weighing, water to be added to the weighed/prepared sulfuric acid and heavy water, so that when the water is added, a prescribed pH which is 0.5 or more and less than 2.0, is obtained; and mixing the weighed/prepared sulfuric acid, heavy water, and water.SELECTED DRAWING: Figure 5 【課題】殺菌力が高く、かつ、人体等への副作用の少ない殺菌用水溶液の製造方法を提供する。【解決手段】殺菌用水溶液の製造方法であって、硫酸（Ｈ２ＳＯ４）と重水（Ｄ２Ｏ）とを、重水成分が１．５～２０重量％含むように混合液を作成するステップと、水（Ｈ２Ｏ）を用いて混合液をｐＨが０．５以上２．０未満となるように希釈調製するステップとを有する。また、硫酸と重水とを、重水成分が１．５～２０重量％含む所定の含量となるように、硫酸及び重水を秤量準備するステップと、秤量準備された硫酸及び重水に水を加えたときにｐＨが０．５以上２．０未満であって、所定のｐＨにするための水を秤量準備するステップと、秤量準備された硫酸、重水及び水を混和するステップとを有する。【選択図】 図５