Recent Examples on the WebPotassium bromate and azodicarbonamide are generally recognized as safe by the USDA, but banned in European countries because of their links to cancer and respiratory problems. Danielle Centoni, Bon Appetit, 21 June 2017 When water containing bromine ions from natural mineral deposits is purified with ozone (O3), bromate (BrO3) is born. Patrick Di Justo, WIRED, 28 Feb. 2012 Potassium bromate and azodicarbonamide are generally recognized as safe by the USDA, but banned in European countries because of their links to cancer and respiratory problems. Danielle Centoni, Bon Appetit, 21 June 2017