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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Partition coefficient

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Administrative data

Link to relevant study record(s)

Description of key information

Log Pow = 1.88

Key value for chemical safety assessment

Log Kow (Log Pow):
1.88

Additional information

Data is not available for partition coefficient of sodium benzoate itself. Given the dissociation constant of benzoic acid (pKa is 4.03) it is anticipated that in solution sodium benzoate will be largely dissociated into benzoic acid. Hence read-across of the partition coefficient study from benzoic acid (Berthod, 1988) is justified. Log Pow is therefore 1.88.