Glycerol and potassium permanganate

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the almost completely reaction of potassium permanganate and glycerol
the redox reaction between potassium permanganate and glycerol that flames and sparks

Reaction of Potassium Permanganate and Glycerin[1][2][3][4][5][6] is the experiment of redox reaction that consists of potassium permanganate (KMnO4), a strong oxidizing agent, and glycerol (commercially known as glycerin or glycerine) (C3H5(OH)3), an easily oxidized substance. The reation is among a number of experiments sometimes referred to as chemical volcano.[7][8]


Potassium permanganate is a strong oxidizing agent and the reaction yields both flame and sparks. (Potassium permanganate (KMnO4) can react explosively if it contacts to organic or any oxidizable substances.)

14KMnO4(s) + 4C3H5(OH)3(l) → 7K2CO3(s) + 7Mn2O3(s) + 5CO2(g) + 16H2O(g) [1][3][4][5][6]

Potassium permanganate (KMnO4) crystalline is put at the center of an evaporating dish. A depression is formed at the center of the pile and glycerol (C3H5(OH)3) is added to it. White smoke, a mixture of carbon dioxide gas and water vapor, is produced after that many things come up including cracking, sparking, and the violet flame, which can occur because of energy emission from the electron.

The reaction of Glycerol and Potassium Permanganate is exothermic reaction. this phenomenon can expain similarly to flame testing experiment that each electron has each energy level, but when it receive energy or heat, electrons go to the different higher level that is called the excited state, but it cannot live long so the electrons release the energy and then go back to the lower level[2] and then energy releases as light.[9] When the reaction is completed, it will leave the trace of the product which consists of grayish solid with green regions.[1][3][4][5][6] In this case, the flame color of the metal Potassium Permanganate is lilac or pink color.[10]

See also[edit]


  1. ^ a b c "Glycerol and KMnO4". University of Washington Department of Chemstry. Retrieved May 26, 2019.
  2. ^ a b Ernest, Z. (April 16, 2014). "Why do different elements make different color flames when you burn them?". Socratic. Retrieved May 26, 2019.
  3. ^ a b c "Oxidation of glycerol by potassium permanganate". Chemedxchange. Retrieved May 26, 2019.
  4. ^ a b c Summerlin, L. R. (1988). Chemical Demonstrations : A sourcebook for Teachers. Volume 1. 2nd ed. Washington, DC: American Chemical Society. p. 122. ISBN 978-0841215351.
  5. ^ a b c Shakhashiri, B. Z. (1983). Chemical Demonstrations, Volume 1: A Handbook for Teachers of Chemistry. University of Wisconsin Press: Madison, Wisconsin: University of Wisconsin Press. pp. 83–84. ISBN 9780299088903.
  6. ^ a b c Lister, T.; O'Driscoll, C.; Reed, N. (1995). Classic chemistry demonstrations. London, UK: Royal Society of Chemistry. pp. 65–70. ISBN 978-1-87034-338-1.
  7. ^ Lee, M. "Chemical Volcano". California State University, Northridge. Retrieved July 11, 2019.
  8. ^ "Chemical Volcano" (PDF). Homi Bhabha Centre for Science Education. Retrieved July 11, 2019.
  9. ^ Clark, Jim. "Flame Tests". chemguide. Retrieved July 11, 2019.
  10. ^ "spontaneous exothermic reaction" (PDF). The Royal Society of Chemistry. October 29, 2008. Retrieved July 11, 2019.