How To Make Potassium Nitrate From Urea In 2023

Comment fabriquer du nitrate de potassium 12 étapes


Potassium nitrate, also known as saltpeter, is a crucial component in the production of fertilizers, fireworks, and gunpowder. It can be synthesized from urea, a common nitrogen-containing compound used in agriculture. In this article, we will explore the step-by-step process of making potassium nitrate from urea.


To make potassium nitrate from urea, you will need the following materials:

  • Urea
  • Potassium hydroxide
  • Distilled water
  • Filter paper
  • Stirring rod
  • Beaker or flask
  • Bunsen burner or hot plate


  1. Dissolve urea in distilled water until it forms a clear solution.
  2. Add potassium hydroxide to the solution and stir until the mixture becomes cloudy.
  3. Heat the mixture to boiling point and continue stirring for about 30 minutes.
  4. Filter the mixture using filter paper to separate the solid from the liquid.
  5. Wash the solid with distilled water to remove impurities.
  6. Dry the solid in the sun or oven until it becomes a fine powder.
  7. Heat the powder in a beaker or flask until it melts and forms a clear liquid.
  8. Cool the liquid until it solidifies again.
  9. Grind the solid into a fine powder.
  10. Your potassium nitrate is now ready for use.


  • Make sure to use distilled water to avoid impurities that may affect the quality of the final product.
  • Wear protective gear such as gloves and goggles when handling chemicals.
  • Use a stirring rod to ensure that the mixture is well mixed.
  • Do not heat the mixture too fast to avoid boiling over.


Making potassium nitrate from urea may seem like a complex process, but with the right materials and procedure, it can be done easily. By following the steps outlined in this article, you can produce high-quality potassium nitrate that can be used in various applications. Remember to handle chemicals with care and follow safety guidelines to avoid accidents.