Registration Dossier

Physical & Chemical properties

Partition coefficient

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Description of key information

logKow: -5.371

Key value for chemical safety assessment

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

Additional information

In the Klimisch 1 non-GLP study from Gries (2013) the logPow was determined according to OECD 107 based on the water and n-octanol solubility of the registered substance.

The registered sulfosuccinate is a surface active substance. According to the OECD GUIDELINE FOR THE TESTING OF CHEMICALS 107 Adopted by the Council on 27th July 1995: Partition Coefficient (n-octanol/water): Shake Flask Method, paragraph 19 "the results of the preliminary estimation (when the shake flask method is not applicable, e.g. surface active material, a calculated value or an estimate based on the individual n-octanol and water solubilities should be provided)".

As laid out in the respective sections of the IUCLID dossier, the water solubility of the registered substance is >470 g/L the solubility in octanol is 0.002 g/L (both at 20°C). Based on this, the Pow is calculated as 0.000004225 and the logPow is -5.371.


The thus determined log Pow is considered to be acceptable for the risk assessment.