. 2022 Jun 8;56(13):9196–9219. doi: 10.1021/acs.est.2c00099

Table 2B. Stability Constants of Phytate-Metal Complexes^b.

cation	ionic strength(mol L^–1)	medium	t (°C)	log K₁₃	log K₁₄	log K₁₅	log K₁₆	other i:j species^a
Mg²⁺	0	NaClO₄	10	7.93	6.49	5.47		2:3, 2:4, 2:5, 3:2, 3:3, 3:4, 3:5
	0		25	7.82	6.66	6.03
	0.15		37	10.5	9.76	8.76	7.25	1:2
Ca²⁺	0		10	7.67	6.34	5.31		2:3, 2:4, 2:5, 3:2, 3:3, 3:4, 3:5
	0		25	7.64	5.82	5.41
	0.15	NaClO₄	37		8.3	8.4	7.4
Cd²⁺	0.15	NaClO₄	37	9.7	8.76	7.53	6.92	1:2
	0.15	NaCl	25		5.25	4.71	4.42	1:7, 2:4, 2:5, 2:6, 2:7, 3:4
Cu²⁺	0		25		10.3	7.79		2:5
	0.15	NaClO₄	37	13.5	12.2	9.07	5.73
Zn²⁺	0.15		37	11.3	10.3	8.54	6.94
Ni²⁺	0.15		37		8.78	8.44	7.20
	0.10	KCl	36	7.27	5.96	5.18	5.05	1:0, 1:1, 1:2, 1:7
Co²⁺	0.15	NaClO₄	37	9.1	7.9	6.96	6.26	1:2, 1:7
Hg²⁺	0.15	NaCl	25	15.6	15.9	16.3	16.5	1:0, 1:1, 1:2, 1:7, 2:0, 2:1, 2:2
	0	NaCl	25	14.7	15.1	15.5	15.7
Mn²⁺	0.15	NaClO₄	37		8.78	8.44	7.2
Fe²⁺	0.15		37	10.5	8.99	7.71	5.94	1:2
Fe³⁺	0.15		37	18.2	12.7	8.89		1:2
Al³⁺	0.15		37	20.1	16.4	12.2	8.48	1:2
(CH₃)₂Sn²⁺	0		25	14.0	11.6	9.16	6.59	1:0, 1:1, 1:2, 1:7, 2:0–2:5, 3:0–3:5
(CH₃)₃Sn⁺	0.05		25			2.45		2:5, 3:4, 3:5, 4:6, 5:1
	0.075		25			3.25

K_ij refers to the equilibrium: iMⁿ⁺ + H_jPhy^(12–j)– = M_iH_jPhy^{(12–in–j)–}.

Adapted from Crea et al.⁷⁹

Table 2B. Stability Constants of Phytate-Metal Complexesb.