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Potassium salt is often used as a substitute for regular sodium chloride salt (the salt you find on your kitchen table), and for good reason. Most people in the United States take in too much salt on a daily basis, which may put them at risk for hypertension, heart attacks and strokes.
Common Household Uses. Potassium permanganate is a mild disinfectant. It is used to treat fungal infections like athlete's foot and is also used for other skin maladies like eczema. The salt is a preservative that florists can use as a preservative to extent the life of fresh cut flowers.ommon Household Uses. Potassium permanganate is a mild disinfectant. It is used to treat fungal infections like athlete's foot and is also used for other skin maladies like eczema. The salt is a preservative that florists can use as a preservative to extent the life of fresh cut flowers.