Sodium hypochlorite (NaOCl) – often referred to as chlorine bleach – is, like hypochlorous acid, an oxidizing agent that is also produced using the electrolysis process. The biggest difference to HOCl is the different charge . While NaOCl is electrically negatively charged , HOCl is neutrally charged , or carries no electrical charge.
Since germ-contaminated surfaces are also negatively charged , an effect similar to that of magnets occurs between them and NaOCl : two negatively charged particles repel each other . This makes it more difficult for NaOCl to penetrate the cell walls of pathogens, the oxidation process is delayed, and the effectiveness is reduced. Hypochlorous acid , on the other hand, can penetrate directly to the cell walls of the germs and oxidize, making it much more effective than NaOCl .
Overall, hypochlorous acid is a much stronger oxidizing agent and kills pathogens many times more effectively than sodium hypochlorite.