Used primarily as a reagent in chemical synthesis, this compound plays a significant role in the preparation of azo dyes, which are widely used in the textile industry for coloring fabrics. It is also employed in analytical chemistry as a chelating agent to detect and quantify metal ions such as iron and copper by forming colored complexes, particularly in environmental and biochemical studies. Additionally, it finds application in organic research for the synthesis of complex molecules due to its ability to act as a precursor in various reactions, and as a color-changing indicator for observing chemical and redox processes in laboratory settings.