Table 7: Formation constants (log K) for 1 : 1 metal EDTA complexes and 1 : 1 metal acetate complexes.

Stability constant for acetic acidReferenceStability constant for EDTAReference

Cu2+1.76, 1.87, 2.71, 3.09, 3.63[61, 62]19.7, 18.8[63, 64]
Zn2+0.91, 1.9[61, 62]17.5, 16.5[63, 64]
Ni2+0.74, 0.83, 1.43[61, 62]19.5, 18.56[63, 64]
Cd2+1.19, 1.23, 1.32, 1.82, 3.15[61, 62]17.4[63, 64]
Pb2+3.5, 2.98, 4.08[61, 62]19[63, 64]
Co2+0.71[65]16.21[64]
Mn2+13.56[64]
Fe3+25.7[64]
Ca2+0.5[65]10.7[64]
Al3+16.3[64]