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Physical & Chemical properties

Dissociation constant

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Reference
Endpoint:
dissociation constant
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance has no ionic structure
Justification for type of information:
Data waiving
Reason: Study technically not feasible.
Justifications: The study does not need to be conducted because the substance has no ionic structure. According the ECHA Guidance Ch. R.7a, 2008 (pg 173), "...if the substance cannot dissociate due to a lack of relevant functional groups, the dissociation constant is irrelevant.." Therefore, as this substance is not ionizable, determination of the dissociation constant is not relevant.

Description of key information

Data waiving

Reason: Study technically not feasible

Justification: According the ECHA Guidance Ch. R.7a, 2008 (pg 173), "...if the substance cannot dissociate due to a lack of relevant functional groups, the dissociation constant is irrelevant.."  Therefore, as this substance is not ionizable, determination of the dissociation constant is not relevant.

Key value for chemical safety assessment

Additional information