Used as a strong oxidizing titrant in volumetric analysis, particularly in redox titrations for determining the concentration of reducing agents such as iron(II), arsenic(III), and other analytes in both inorganic and organic compounds. Commonly applied in analytical chemistry for standardization of other reagents and in environmental testing to measure chemical oxygen demand (COD). Its stability and well-defined oxidation potential make it suitable for precise and accurate quantitative analysis in laboratory settings.