Used as a curing agent and crosslinking promoter in epoxy resin systems, enhancing thermal stability and mechanical strength of the final product. Commonly applied in high-performance coatings, adhesives, and composite materials where durability and chemical resistance are critical. Also utilized in the synthesis of specialty polymers and as an intermediate in the production of corrosion inhibitors and surfactants. Its hydrochloride form improves solubility and handling in aqueous-based formulations.