Product Details: Grade Standard Industrial Grade Packaging Size 25 KG Packaging Type BAG Country of Origin Made in India   Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpetre (or saltpeter in North America). 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).