E252 - Potassium nitrate Group: Preservatives Description: may be derived from waste animal or vegetable matter; used in gunpowder, explosives and fertilisers, and in the preservation of meat; may provoke hyperactivity and other adverse reactions; potentially carcinogenic; restricted in many countries (see 249) Animal origin: Yes Warning: Potentially carcinogenic; restricted in many countries << Back to: Preservatives << Back to: Main page