Used primarily as an intermediate in the synthesis of high-performance dyes and pigments, especially in the production of azo dyes for textiles and inks. It serves as a key component in the development of photochromic and electrochromic materials due to its stable aromatic amine structure. Also employed in the formulation of organic semiconductors and hole-transport materials for use in OLEDs and photovoltaic devices. Its electron-donating properties make it suitable for applications in nonlinear optical materials and sensors. Additionally, it finds use in polymer chemistry as a crosslinking agent or curing modifier in epoxy resins, enhancing thermal and mechanical stability.