Used primarily in the textile industry as a key component in dyeing processes. It is essential for producing vibrant and long-lasting colors on fabrics, particularly in the creation of azo dyes. The chemical reacts with coupling agents to form insoluble azo pigments, which bond strongly to fibers, ensuring colorfastness and resistance to washing or fading. It is also employed in the paper and leather industries for similar coloring purposes. Its stability and efficiency make it a preferred choice for achieving consistent and high-quality dye results.