Use #1: As Water Purifier
Studies, from “The Pharmacological Basis of Therapeutics”, have shown that at a dilution of 1:10,000 (potassium permanganate to water) kills most bacteria within an hour.
You may be asking the question, can I sterilize drinking water with potassium permanganate? Not only that you can, but you can also do it at the source. For example, if you have a well, you can control bacterial growth by feeding the well a solution of around 4-7 g permanganate per gallon.
Use #2: As Wound Disinfectant
Potassium permanganate is more readily used externally. As mentioned earlier, the oxidizing nature of the chemical means it is a very good disinfectant.
A dilute solution of potassium permanganate can be used to treat anything from trench foot to cleaning wounds to sterilizing infected water. It can even be used to treat bacterial infections in fish.
Related: Emergency Care For Gunshot Wounds
Use #3: To start a fire
Potassium permanganate is a great fire starter. All you need to start a fire with potassium permanganate is about 10 g (1/3 oz) of it and some glycerin (about 1 ml or 1/4 teaspoon).
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