How to Make a Purple Flame


One way to add some fun and interest to a fire is to change the color of the flame. Create a purple flame by burning potassium chloride, more commonly known as the salt that water softeners use. The purple color lasts as long as there is salt for the fire to burn. Fires that burn hotter will burn through the salt faster, making the color disappear faster. The burning potassium chloride will not harm people to breath.

Things You'll Need

  • Logs, 10-inches long or smaller
  • Kindling
  • Leaves
  • Matches or lighter
  • Potassium chloride (water softener salt)
  • Measuring cup
  • Paper sack or paper cup
  • Bucket of water
  • Build and light a fire. Stack the larger logs on the ground or in pit. The logs shouldn't cover more than a 1 1/2- to- 2-foot square of dirt. Add smaller sticks and kindling on top of the logs. Some people prefer to arrange the larger logs in a tee pee shape with kindling surrounding and inside of it. Cover the wood with dried leaves. Light the leaves and kindling on fire with matches or a lighter.

  • Watch the fire closely. Wait for the larger logs catch on fire. The amount of time this takes depends on the dryness of the wood and rate of burning.

  • Pour 1-cup salt into a dry paper cup or paper sack. Fold the sack closed. If you use a cup, crumple the cup so the top is closed. Stand downwind of the flames and carefully toss the cup or sack onto the center of the fire. As the paper burns, it releases the salt into the fire. The fire changes colors as the salt burns.

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