Registration Dossier

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Titration with alkali gave a mean pKa of 9.56 at 21 °C with standard deviation 0.04 and coefficient of variation of 0.4% (n=3).

Key value for chemical safety assessment

Additional information

The dissociation constant measured in this study was not a true pKa of Bronopol since it degrades above pH 7.0 (Challis and Yousaf, 1991). The pKa measured was likely to be a composite pKa primarily associated with the initial decomposition product.