Used in analytical chemistry for precise titration analysis, particularly in redox titrations where manganese acts as an electron donor or acceptor. Commonly applied in the standardization of oxidizing agents such as potassium permanganate or cerium(IV) sulfate. Also utilized in environmental testing to determine oxygen demand in water samples and in the pharmaceutical industry for quality control of raw materials. Its high purity and known concentration make it suitable for calibration of instruments and preparation of standard solutions in volumetric analysis.