This chemical is primarily used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes. It plays a crucial role in creating vibrant and colorfast dyes for textiles, leather, and paper industries. Additionally, it is employed in the development of fluorescent markers and indicators for analytical chemistry applications, aiding in the detection and quantification of specific substances. Its sulfonic acid group enhances solubility in water, making it suitable for use in aqueous dyeing processes. The compound's ability to form stable complexes with metals also makes it valuable in certain metallurgical and photographic applications.