Used primarily as an intermediate in the synthesis of dyes and pigments, it plays a crucial role in the production of vibrant and stable colorants for textiles, inks, and coatings. It is also employed in the development of pharmaceuticals, particularly in the creation of compounds with hydrazine moieties for therapeutic applications. Additionally, it finds use in analytical chemistry as a reagent for detecting and quantifying specific chemical species due to its reactive hydrazine group. Its sulfonic acid group enhances solubility, making it suitable for aqueous-based formulations and processes.