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Dissociation constant

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Description of key information

The stability and dissociation constants (log K) are 16.5, 3.0, 1.2 and 11.6, respectively.  

Key value for chemical safety assessment

Additional information

No detailed information available; literature data

M = Zn2+ ; L = EDTA

[ML]/[M].[L]              log K = 16.5

[MHL]/[ML].[H]          log K = 3.0

[MH2L][MHL] [H]       log K = 1.2

[ML]/[MOHL] [H] log K = 11.6

(25°C, 0.1M ionic strength)