Used primarily in the dye and textile industries, this chemical serves as an intermediate in the synthesis of dyes, particularly for coloring fabrics and materials. It is valued for its ability to produce vibrant and stable colors, making it suitable for use in high-quality textile products. Additionally, it finds application in the production of specialty chemicals and organic compounds, where its sulfonate group enhances solubility and reactivity. In research, it is utilized as a reagent for studying indole derivatives and their properties. Its role in creating functional materials and coatings is also notable, contributing to advancements in material science.