Potassium Nitrate KNO 3

Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−, and is therefore an alkali metal nitrate. It occurs in nature as a mineral, niter (or nitre in the UK). It is a source of nitrogen, and nitrogen was named after niter. Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpeter (or saltpetre in the UK).

Industrial UsesSpecification SheetMSDSPicturesVideo

Industrial Uses:

  • It is used to make explosives, Matches, Fireworks, Glass, Rocket, fuel etc.
  • Potassium nitrate has long been used for fireworks and gunpowder.
  • It’s now more commonly added to food to maintain the quality of meat and cheese.
  • Specialty toothpastes often contain KNO₃ to alleviate tooth sensitivity.
  • A mixture of KNO₃ and sodium nitrate (NaNO₃) is used for storing heat in solar energy installations.

Agriculture Uses:

  • Applications of KNO₃ to the soil are made before the growing season or as a supplement during the growing season.
  • A diluted solution is sometimes sprayed on plant foliage to stimulate physiological processes or to overcome nutrient deficiencies.
  • Foliar application of K during fruit development advantages some crops, since this growth stage often coincides with high K demands during the time of declining root activity and nutrient uptake.
  • Further, it’s easy to handle and apply, and is compatible with many other fertilizers, including specialty fertilizers for many high-value specialty crops, as well as those used on grain and fiber crops.
  • It’s also commonly used for greenhouse plant production and hydroponic culture.
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