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KMnO4 is potassium permanganate.
Potassium permanganate
A molecule of potassium permanganate, KMnO4.
Potassium permanganate, KMnO4, has charge = 0
Alkaline potassium permanganate solution is a solution of potassium permanganate containing an alkali. The alkali can be sodium hydroxide or potassium hydroxide.