This chemical is primarily used in the textile industry as a key intermediate for the synthesis of dyes. It is particularly valued for its role in producing vibrant and stable colorants for fabrics, especially in the creation of anthraquinone-based dyes. These dyes are known for their excellent lightfastness and resistance to fading, making them suitable for coloring materials exposed to harsh environmental conditions. Additionally, it finds application in the production of specialty inks and pigments used in printing and coating industries. Its sulfonic acid group enhances water solubility, which is beneficial for dye formulation and application processes.