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Is chlorine dioxide effective over a wide pH range?

April 26, 2017chlorine DIOXIDE effective pH range wide

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Is chlorine dioxide effective over a wide pH range?

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Because chlorine dioxide is a dissolved gas, it does not ionise to form weak acids (as chlorine and bromine do) in aqueous solutions. This allows chlorine dioxide to be effective over a wide pH range (5 – 10). For example, the pH dependent speciation of chlorine produces hypochlorite ion and hypochlorous acid (HOCl). Hypochlorite is only 1/30 to 1/200 as effective as HOCl. Chlorine dioxide being a neutral species with rapid disinfection kinetics is 100% available for disinfection in hard or soft water.