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Physical & Chemical properties

Dissociation constant

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Description of key information

The dissociation constant ofthe substance is 4.87 at 20°C.

Key value for chemical safety assessment

pKa at 20°C:
4.87

Additional information

A literature review was conducted. In a weight of evidence approach the literature values were evaluated. HSDB reports the dissociation constant to be 4.88. The Knovel Solvents - A Properties Database handbook reports the dissociation constant

to be 4.87 at 20 °C. REAXYS reports the dissociation constant to be between 4.73 and 4.87 at 20°C and the Syracuse Research Coperation, Physical Properties Database reports the dissociation constant to be 4.875.

Four independent literature sources report the dissociation constant in the same range. Thus, a dissociation constant of 4,87 which is the recent value from the peer reviewed database REAXYS was chosen as key value.