Potassium nitrate is white crystals, with a salty taste, non-toxic, flammable and relatively soluble in water, the solubility of which increases by increasing the temperature.

Potassium nitrate is mainly used as a source of nitrate in chemical fertilizers. Also, this substance is used in the composition of toothpastes to treat sensitive teeth, treat asthma, treat kidney diseases, and treat high blood pressure. Potassium nitrate is used in the production of nitric acid, explosives, matches and as a food preservative.