Sodium hypochlorite NaClO

There are two types of industrially developed processes for obtaining sodium hypochlorite:

• the chemical process that is the main subject of this text;

• The electrochemical process in which a sodium chloride solution (brine or seawater) feeds electrolysers with or without separators, generating chlorine at the anode and producing soda at the cathode. Hypochlorite is obtained in situ in the case of electrolyzers without separators; otherwise, the two reagents are mixed in a specific reactor. This process is characterized by the production of solutions diluted to less than 10 g/l of active chlorine.