Sodium anthraquinone-2-sulfonate is widely used as a catalyst in the production of hydrogen peroxide through the anthraquinone process. It plays a crucial role in the redox cycle, where it facilitates the hydrogenation and oxidation steps, enabling efficient and large-scale synthesis of hydrogen peroxide. Additionally, it is employed in the textile industry as a dye intermediate, contributing to the creation of vibrant and durable dyes for fabrics. Its water-soluble properties make it suitable for use in various aqueous-based applications, including paper bleaching and chemical synthesis. In analytical chemistry, it serves as a reagent for detecting and quantifying specific ions or compounds due to its distinct colorimetric properties.