Registration Dossier

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

pKa values could not be determined using either the titration method or the spectrophotometric method, therefore, the results of the calculation method are reported.
The following pKa values in the logarithm range of 1 - 13 for acidic and basic groups in the molecular structure of the test substance were calculated using the Perrin calculation method:
 Acidic:  5-SUBST-TETRAZOL;  pKa 4.25
Basic: 1-SUBST-IMIDAZOLE; pKa 4.83

Key value for chemical safety assessment

pKa at 20°C:
4.25

Additional information