Used as a solid-phase extraction (SPE) sorbent for purification and cleanup of acidic compounds from complex mixtures. The amine functional group binds acidic molecules, allowing neutral and basic impurities to be washed away. Commonly applied in environmental analysis, pharmaceutical sample preparation, and food testing to remove interferences like fatty acids, organic acids, or pigments. Also serves as a chromatographic stationary phase in HPLC and flash column chromatography for polar compound separation. Can act as a catalyst support or be used in synthesis for immobilizing reagents via the primary amine group. Offers good thermal stability and reusability in various organic solvents.