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Name Variations

  • potassium nitrate
  • saltpetre
  • potassium salt

About Saltpeter

Wikipedia Article About Saltpeter on Wikipedia

The chemical compound potassium nitrate is a naturally occurring mineral source of nitrogen. It is a nitrate with chemical formula KNO3. When it burns, it shows a bright pink to purple color.

Its common names include saltpetre (from Medieval Latin sal petrae: "stone salt" or possibly "Salt of Petra"), American English salt peter, Nitrate of potash and nitre. The name salt peter is also applied to sodium nitrate.