Sodium nitrate is the chemical compound with the formulaNaNO3. This salt is also known as Chile saltpeter or Peru saltpeter (due to the large deposits found in each country) to distinguish it from ordinary saltpeter, potassium nitrate. The mineral form is also known as nitratine, nitratite or soda niter.
Sodium nitrate is a white solid which is very soluble in water. It may be used as a constituent of fertilizers, pyrotechnics and smoke bombs, glass and potteryenamels, as a food preservative and a solid rocket propellant. It has been mined extensively for these purposes.