Used in the synthesis of dyes and pigments, particularly for textile and leather coloring due to its strong affinity for fibers and lightfast properties. Employed in analytical chemistry as a reagent for detecting metals like aluminum and beryllium through colorimetric methods. Serves as an intermediate in the production of pharmaceuticals, including certain laxatives derived from anthraquinone compounds. Applied in some electrochemical studies for its redox behavior in battery and sensor technologies. Also investigated for use in photodynamic therapy and organic semiconductors owing to its photoactive characteristics.