Friday, February 02, 2007
DIY 2: Chemistry: Potassium Permanganate + Glycerine = Exothermic reaction cool (I mean Hot)
Typical military survival kits usually have a vial of potassium permanganate. It can be used to purify water in dilute solutions, as a disinfectant when used in concentrated solutions and a marker for signaling in snow. But, it can serve one more purpose that of a firestarter. When a fine granules of potassium permanganate are rubbed with sugar or glycerine the result is an exothermic reaction. Using it in an actual survival situation, I reckon are slim. If you have access to potassium permanganate in a survival situation. It is most likely that it is, because, it was part of a survival kit. In that case you definitely have other more convenient means of starting a fire. But, sometimes just knowing a possibility exists can be a lifesaver.
14 KMnO4 + 4 C3H5(OH)3 --> 7 K2CO3 + 7 Mn2O3 + 5 CO2 + 16 H2O + Heat
Okay so what does one need to do this:
glass bowl (just for effect ;-))