KMnO4 + 8HCl + KCl → K2[MnCl5] + 2Cl2 + 4H2O
Potassium permanganate react with hydrogen chloride and potassium chloride to produce pentachlorinemanganate(III) potassium, chlorine and water. Hydrogen chloride - concentrated solution. Potassium chloride - saturated solution. This reaction takes place at a temperature near 0°C, in the medium of ester.