Used as a building block in the synthesis of dyes and pigments, particularly in azo dye production due to its aromatic amine groups. Also employed in the development of pharmaceutical intermediates, where the dual amine functionality allows for coupling reactions in drug design. Commonly utilized in polymer chemistry to introduce amine groups into resins and coatings, enhancing adhesion and cross-linking properties. Its hydrochloride form improves solubility and stability in aqueous reaction systems, making it suitable for use in controlled chemical environments.