Choose a topic below for more information on food additives and food additive legislation Food Additives – What are they and how are they assessed? Food Additive Legislation Nitrites (E 249-250) and Nitrates (E 251-252) Sulphur Dioxide and Sulphites Labelling Requirements for Food Additives List of Additives (E numbers) EFSA Opinion: “Titanium dioxide (E171) no longer considered safe when used as a food additive"