Used in analytical chemistry for the determination of reducing agents through iodometric titrations. Commonly applied in the quantification of sulfites, thiosulfates, and ascorbic acid in food and pharmaceutical samples. Also employed in the standardization of sodium thiosulfate solutions. Suitable for quality control in environmental testing, such as measuring oxygen demand in water samples. Provides reliable results due to its stability and precise concentration, making it ideal for calibration and volumetric analysis in laboratories.