Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

1.5: 1,2,4-triazole, calculated as pKa of the corresponding acid
-3.9: RCON(R)2, calculated as pKa of the corresponding acid

Key value for chemical safety assessment

Additional information

The dissociation constant of the test material was calculated using Pkalc version 5.0 (a module of PALLAS version 3.0), an expert system for the calculation of pKa values using Perrin’s calculation method. The estimated dissociation constants were calculated for the corresponding acid portions as follows; 1,2,4-triazole, pKa 1.5, RCON(R)2 pKa -3.9.