Primarily utilized as a reagent in analytical chemistry, this compound is extensively employed for the detection and quantification of phenols and aromatic amines. It reacts with these substances to form colored compounds, which can be measured spectrophotometrically, making it a valuable tool in environmental monitoring and quality control processes. Additionally, it is used in the synthesis of dyes and pigments, where its reactivity with various organic compounds aids in producing a range of colors. Its application extends to biochemical research, where it serves as a staining agent for visualizing specific compounds in chromatographic techniques.