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E251-SODIUM NITRATE

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Sodium nitrate is used as a food additive (preservative) in certain meats (poultry or charcuterie). It should not be confused with sodium nitrite, also used for meat preservation, which bears the number E251.

Potassium permanganate

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In diluted solution, potassium permanganate is used for water treatment. It also serves as a disinfectant at a concentration of 0.5 grams per liter, commonly employed for washing vegetables in tropical countries.