Used as a sensitive analytical reagent for the spectrophotometric determination of trace metals, particularly copper and zinc. It forms highly colored complexes with these metals, allowing detection at very low concentrations. The azo dye structure provides strong absorbance in the visible range, making it ideal for colorimetric analysis in environmental and industrial samples. Also employed in the development of chemical sensors due to its selective response to specific metal ions. Its application extends to research in coordination chemistry, where it acts as a chelating chromophore for studying metal-ligand interactions.