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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

- Log Pow [estimated with computational approach (according to OECD Guideline 107 (EU Method A.8)]: 6.91 at 20°C [calculation based on the ratio of the (experimentally determined) solubility of the material in octanol and water];
- Log Pow (estimated with KOWWIN v1.68 by US EPA): 26.22.
For purpose of exposure assessment calculations, a logKow of 8.0 was taken into consideration, since this value represents the maximum valid log Pow value in the algorithm of EUSES or EU-TGD approach.

Key value for chemical safety assessment

Log Kow (Log Pow):
8
at the temperature of:
20 °C

Additional information

The partition coefficient of ‘Benzenesulfonic acid, di-C10-14-alkyl derivs., calcium salts’ was determined to be LogPow >6.91 at 20°C [estimated with computational approach according to OECD Guideline 107 (EU Method A.8) that was based on the ratio of the (experimentally determined) solubility of the material in octanol and water]. Moreover, the received result was confirmed by a QSAR estimated value: 26.22 (KOWWIN v1.68 by US EPA).

Finally, for purpose of exposure assessment calculations, a logKow of 8.0 was taken into consideration, since this value represents the maximum valid logKow value in the algorithm of EUSES or EU-TGD approach.