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Dissociation constant

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Description of key information

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Key value for chemical safety assessment

Additional information

In accordance with REACH Chapter R.7A Endpoint Specific Guidance, specifically R.7.1.17.1 Information Requirements on Dissociation Constant, if the substance cannot dissociate due to a lack of relevant functional groups, the dissociation constant is not required. As petroleum hydrocarbons do not contain functional groups subject to dissociation, data for this endpoint is not needed.