Used as a key intermediate in the synthesis of dyes and pigments, particularly in the production of anthraquinone-based colorants for textiles, plastics, and inks. It serves as a photoinitiator in UV-curing systems, enabling rapid polymerization in coatings, adhesives, and printing inks when exposed to light. Also employed in the manufacture of certain pharmaceuticals and as a catalyst or sensitizer in organic reactions and industrial oxidation processes. Additionally, it is widely used in the industrial production of hydrogen peroxide via the anthraquinone process, where it acts as a key working agent that undergoes cyclic reduction and oxidation to generate hydrogen peroxide continuously. Its derivatives are explored in electrochemical applications, including potential use in flow batteries for energy storage.