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 use in water quality testing to measure dissolved oxygen via the Winkler method. Provides a stable and reliable source of iodine in redox titrations due to its high purity and consistent reactivity.