Potassium hydroxide (KOH) is formed by the reaction of potassium with water. This reaction can be violently exothermic. Potassium permanganate is used to purify drinking water. It dissolves impurities in water. Potassium permanganate is a purple-black crystalline salt. Its chemical formula is KMnO4.Potassium permanganate is used as a strong oxidizing agent in the chemical industry and laboratories. Potassium permanganate is also used as a medicine for dermatitis, for cleaning wounds, and for general disinfection. Potassium chloride (KCl) is a naturally occurring potassium salt. It is used as fertilizer. Potassium hydroxide is also called caustic potash. It is used in making liquid soap and detergent (Tassew Arega 2020).