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**Molecular formula:** KNO₃ **Molar mass:** 101.103 g/mol **Description:** Potassium nitrate, also known as potassium saltpeter, is a water-soluble, crystalline white powder. It is an ionic compound consisting of a potassium cation (Na⁺) and a nitric anion (NO₃⁻). **Applications:** Similar to sodium nitrate, it is an important industrial fertilizer. In the food industry, it is used as an additive (E252) to extend the shelf-life of meat products. The compound's oxidizing properties make it a useful component in pyrotechnics.
