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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

 Due to the UVCB nature of the substance the test is not considered techncially possible.

Key value for chemical safety assessment

Additional information

The nature of the substance makes determination of dissociation constant technically challenging. MK92K is considered to be a UVCB substance comprising multiple components, of similar chemical functionality, in varying proportions. Whilst MK92K possess functionality that could be anticipated to dissociate under environmental conditions, it would not be expected to behave in a traditional manner and yield a single dissociation constant. As the number of components is significant, and variable it would also present a significant technical challenge to isolate these in order to determine the individualdissociation constants.