The violent burning of a mixture of two solids

Very bright and powerful orange flame

Scientific name: Oxidation of sodium nitroprusside with potassium perchlorate


Горение нитропруссида натрия с перхлоратом калия

by Руслан Андреев


Wear eye protection goggles. Work away from flammable objects.

Always follow general safety recommendations. Please note that conducting chemistry experiments you must comply with the relevant legal procedures in your country.

Reaction formula

Na2[Fe(CN)5NO] + 6 KClO4 → Na2FeO4 + 6 KCl + 5 CO2 + 5 NO2 + NO

Step-by-step instruction

WARNING! This experiment is dangerous! You should NOT perform this at home. ONLY carry out this experiment, if you are a trained chemist, and you understand local safety and legal requirements, which are required to perform such experiments

  1. Grind in a mortar approximately equal amounts of sodium nitroprusside and potassium perchlorate.
  2. Mix the two substances on a fireproof surface.
  3. Ignite the resulting mixture.
  4. Observe a violent burning.

Scientific background

Potassium perchlorate is one of the strongest inorganic oxidants. Sodium nitroprusside contains several atoms which may be oxidized. Due to this fact, the reaction between the two compounds proceeds. The proposed equation for the reaction is conjectural.


Published on 30 June 2015

  • Fire
  • Heating with fire
  • Explosion
  • Poisoned gas
  • Organic
  • Electricity
  • Solution
  • Oxidation reduction
  • Color change
  • Precipitate
  • Gassing
  • Catalyst