Potassium Nitrate - KNO3

What is Potassium Nitrate (KNO3)?

KNO3 is a chemical compound with chemical name Potassium Nitrate. It is also called as nitre or saltpeter. It contains potassium (a soft, light, and silver metal), oxygen, and nitrogen (a colorless and odorless gas). It is an alkali metal nitrate because it is an ionic salt of potassium ions K+ ions and nitrate ions NO3. It is solid white in color or sometimes white to dirty gray in color. Potassium nitrate is soluble in hot water. This compound releases oxygen when heated or decomposed. It is a strong oxidizing agent It is widely used in the removal of the stump, fireworks, fertilizers, etc. It is a major constituent of black powder and food preservation techniques.

Properties of Potassium Nitrate – KNO3

KNO3 Potassium Nitrate
Molecular Weight/ Molar Mass 101.1032 g/mol
Density 2.109 g/cm3
Boiling Point 400 °C
Melting Point 334 °C

Potassium Nitrate structure (KNO3 Structure)

Potassium Nitrate - KNO3

Potassium Nitrate (KNO3 ) Uses

  • It is used as a form of fertilizer as it contains all the macronutrients needed for the plants to grow.
  • It is used as gunpowder in explosives such as bombs, grenades, etc.
  • Used in the manufacturing and production of cigarettes.
  • It is used extensively used in the preservation of hides
  • It has medicinal applications such as a diuretic in medicine
  • Used in toothpaste to make the teeth less sensitive to pain
  • Used in the food industry to preserve meat against microbial agents

Learn more about the Structure, physical and chemical properties of KNO3 from the experts at BYJU’S.

Other related links:

Practise This Question

A solution of CuSO4 is