Abstract
The stability of the representative series of ω-aminoalkylphosphonic acids (ω-AAP: 2-AlaP and 3-AlaP), 1-aminoalkylphosphonic acids (AAP: GlyP; AlaP and PglP) and quaternary 1-aminoalkylphosphonic acids (AAP: MalP), 1-(N-alkylamino)alkylphosphonic acids (R-AAP: tBu-GlyP; tBu-AlaP; Me-HalP; Et-HalP and Et-MalP) and 1-(N,N-dialkylamino)alkylphosphonic acids (R2-AAP: Me2-GlyP and Me2-HalP) being exposed to acidic (2 M H2SO4) and/or basic (2 M KOH) solutions in the temperature range of 25-100 °C, was investigated.