Used primarily as an intermediate in the synthesis of dyes and pigments, especially for azo dyes that exhibit bright shades and good lightfastness. It is also employed in the production of specialty polymers and photochemicals due to its electron-donating ethoxy groups and amine functionality. Its hydrochloride salt form enhances stability and solubility, making it suitable for use in aqueous reaction systems. Additionally, it finds application in research laboratories for developing new organic compounds in medicinal chemistry and materials science.