Question about potassium permanganate/reaction

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Discussion Overview

The discussion centers around the reaction between potassium permanganate (KMnO4) and glycerin, specifically exploring the feasibility of obtaining solid potassium permanganate from a commercial solution and the expected reaction outcomes. The scope includes experimental approaches and safety considerations related to chemical reactions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Experimental/applied

Main Points Raised

  • One participant expresses interest in experimenting with potassium permanganate and glycerin, noting that the only available source is a pond treatment solution containing potassium permanganate.
  • Another participant states that a spontaneous and exothermic reaction occurs when solid potassium permanganate is mixed with glycerin, providing a chemical equation for the reaction.
  • It is suggested that the participant needs solid KMnO4 for the reaction to work, and one participant proposes evaporating the water from the solution to crystallize the potassium permanganate.
  • A cautionary note is raised regarding the handling of potassium permanganate solutions, emphasizing the importance of identifying the solvent before attempting to remove it from solution.
  • Another participant reiterates the need for solid KMnO4 and provides a method for obtaining it by boiling down the solution until saturated, then cooling to precipitate crystals.

Areas of Agreement / Disagreement

Participants generally agree that solid potassium permanganate is necessary for the reaction with glycerin to occur. However, there are differing views on the safety and methods for extracting solid potassium permanganate from the solution.

Contextual Notes

Participants express uncertainty about the safety and effectiveness of various methods for isolating potassium permanganate from the solution, as well as the potential risks involved in handling strong oxidizers.

johny_doe
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Before I present my problem, I would just like to introduce myself and my interest in combining unique chemicals and documenting their reactions. A friend has mentioned to me that in combining potassium permanganate and glycerin, a favorable reaction will occur.

In my spare time I have decided to attempt this chemical composition for myself and see what reaction I would experience. There was no problem in finding glycerin, however, the only source of potassium permanganate that I could find was in a solution designed for backyard ponds. This solution, called "Poly-Ox", has a dark purple color to it and the bottle features a large warning label stating the solution contains potassium permanganate.

With the idea of error in mind, I have attempted to use the "Poly-Ox" solution and see if I will be able to obtain a reaction inclusive of the other chemicals and ingredients. To no surprise, it did not work. Since the glycerin I am using is pure, it is safe to assume that the problem I am experiencing is with the Poly-Ox solution. I am curious to know if there is any method in which I can partake towards potentially seperating the potassium permanganate from the other substances. If this does not seem likely, any help regarding other ways of obtaining potassium permanganate will be appreciated, wheather it be from the "Poly-Ox" substance that I have now or wheather it be from buying something completely new.

Thanks
 
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Potassium Permanganate is a very powerful oxidizer, so powerful, when it is mixed with glycerin, a sponteous and very exothermix reaction occurs.

A video of glycerin reacting with KMnO4 crystals can be seen here,
http://www.powerlabs.org/chemlabs/kmno.htm
14KMnO4 + 4C3H5(OH)3 --> 7K2CO3 + 7Mn2O3 + 5CO2 + 16H2O

My guess as to your problem is that you need solid KMnO4 for this to work, not a solution of KMnO4.
You could try to evaporate off the water, crystalizing out the Potassium Permanganate and everything else in solution.
 
KMnO4 is a very strong oxidizer, in turn should not be taken out of solution unless the solvent is identified. I had a jar of potassium permanganate in 2% solution, it came out of solution and implanted itself in the tape around the jar. I had to wrap it up and dipose of it carefully. You could try, BUT BE CAREFUL!
 
As others have mentioned, you need solid KMnO4 for this reaction to occur. Boil down your solution until it is saturated. Cool it down until crystals precipitate out. Filter and dry the crystals. Powder your product with a mortal and pestel and then try the reaction.
 

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