Potassium Nitrate

Potassium Nitrate

Potassium Nitrate is a chemical compound. 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 saltpetre (or saltpeter in North America).

Usage of Potassium Nitrate:

Nitric acid production, Oxidizer, Meat processing, Food preparation, Fertilizer, Pharmacology and other.

Major uses of potassium nitrate are in fertilizers, tree stump removal, rocket propellants and fireworks. It is one of the major constituents of gunpowder (black powder). In processed meats, potassium nitrate reacts with hemoglobin and myoglobin generating a red color.

Chemical formula:


Other names:

Saltpeter, Saltpetre, Nitrate of potash


White solid


2.109 g/cm3 (16 °C)