Registration Dossier

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The average pKa for the two ionisable groups of the test substance is 10.6.

Key value for chemical safety assessment

pKa at 20°C:
10.6

Additional information

The dissociation constant of the test substance was determined according to OECD TG 112 by titration. The average pKa for the two ionisable groups of the test substance is 10.6.

According to the calculation by the online available SPARC tool, the pKa value for the first protonation of MPMD is 10.66 and the pKa value for the second protonation of MPMD is 9.59.