Potassium nitrate

Potassium nitrate

Potassium nitrate [KNO₃]

Potassium nitrate is a manufactured fertilizer for supplying nitrogen and potassium. It is made from potassium chloride and a source of nitrate, such as sodium nitrate, ammonium nitrate, or nitric acid. Potassium nitrate is sold as a water-soluble, crystalline material for hydroponics and in a prilled form for soil application. Sales of potassium nitrate account for only a small portion of the global potassium fertilizer market as a fertilizer for special uses. Its grade is 13-0-45. It is the ingredient of stump removers as it facilitates rotting of tree stumps. Natural occurring potassium nitrate is saltpeter.