Registration Dossier

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The dissociation constants of 7PPD are pKa(HL/H+L) = 6.70±0.50 and pKa(H2L/H+HL) = -0.65±0.40 at 25 °C, which were calculated by using ACD/Labs, v. 7.00.

Key value for chemical safety assessment

pKa at 20°C:
6.7

Additional information

The QSAR value demonstrates that both, the neutral and the mono-protonated form of the substance will be present at the environmental relevant pH of 7.