| abstract |
A composition, which can prepare hypochlorous acid water having a pH of 5 to 7.5, a concentration of hypochlorous acid of 50 to 500 ppm, a concentration of free chlorine molecules lower than an effective chlorine concentration, the concentration of free chlorine molecules of 20 ppm or less, and a nonionized hypochlorous acid as an active ingredient when diluted with an aqueous vehicle, the composition comprising: 1) one or more selected from trichloroisocyanuric acid, dichloroisocyanuric acid and salts thereof; and 2) a buffer salt (provided that, a chlorite of an alkali metal or alkaline earth metal is included in neither the aqueous medium nor the composition). |