A useful and potential chelating agent, 2,4,6-triamino-1,3,5-triazine-N,N,N′,N′,N″,N″-hexaacetic acid (melamine hexaacetic acid), was synthesised by nucleophilic substitution through three steps and its structure was confirmed by IR, 1H NMR, 13C NMR and elemental analyses. The chelation value of melamine hexaacetic acid was determined, by calcium oxalate titration. In comparison with EDTA, melamine hexaacetic acid has better chelating ability.
