Chlorine dioxide is regulated in the EU as a food processing aid as defined in Article 1 of Directive 89/107/EC. It does not require to be declared as a food additive as it leaves no detectable residues, odour or taint on the fresh produce. Chlorine dioxide can be used as a processing aid for the treatment of a range of fresh foods, including fresh produce, fish and poultry
It is approved in the EU as a primary disinfectant in potable water under regulation BSEN 938/9 and BSEN 12671 and is acceptable for the treatment of produce certified as organic. It can also be used for hard surface disinfection and CIP processes in food and drink production facilities.