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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Study period:
09 February 2010 – 19 April 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
This study has been performed according to OECD and EC guidelines and according to GLP principles.
Qualifier:
according to guideline
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.8 (Partition Coefficient)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: estimation
Partition coefficient type:
octanol-water
Type:
Pow
Partition coefficient:
> 1 000 000
Temp.:
20 °C
pH:
6.9
Key result
Type:
log Pow
Partition coefficient:
> 6
Temp.:
20 °C
pH:
6.9
Details on results:
n-Octanol solubility
After stirring for 50 hours, the test solution with a nominal concentration of 1065 g/L was a clear solution without undissolved test substance. Based on this, it was concluded that the solubility of Blown rapeseed oil in n-octabol at 19.9 x 0.8°C is > 1000 g/L.

Water solubility
Information on the water solubility of the test substance is given in section 4.8. The water solubility was < 1 x 10^-3 g/L.
Conclusions:
The estimation method was used for the determination of the partition coefficient of Blown rapeseed oil. The Pow and log Pow value of the test substance at 20°C was calculated from the n-octanol solubility and the water solubility to be > 1 x 10^6 and > 6, respectively.

Description of key information

The estimation method was used for the determination of the log Pow; calculated from the n-octanol solubility and the water solubility: >6

Key value for chemical safety assessment

Log Kow (Log Pow):
6
at the temperature of:
20 °C

Additional information

Study in accordance with OECD 107