High Quality Content by WIKIPEDIA articles! Potassium nitrite, with chemical formula KNO2, is a material which contains potassium and nitrogen. Potassium nitrite should not be confused with potassium nitrate. As a food additive, potassium nitrite is used as a preservative in a manner similar to that of sodium nitrite. It has the E number E249. Potassium nitrite is a strong oxidizer and contact with skin or clothing, as well as inhalation and ingestion, should be avoided. Potassium nitrite is used in the manufacturing of heat transfer salts, and is highly combustible.

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