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Physical & Chemical properties

Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2016-03-23 to 2016-03-24
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
yes
Remarks:
In a preliminary test determining the solubility in the individual solvents, the log Pow was determined as - 2.94. As this value was outside of the applicability domain of the potential tests, no further test were performed.
Principles of method if other than guideline:
The preliminary partition coefficient (log Pow) was estimated by using a preliminary screening test as described below.
GLP compliance:
yes
Type of method:
estimation method (solubility ratio)
Partition coefficient type:
octanol-water
Analytical method:
high-performance liquid chromatography
Key result
Type:
log Pow
Partition coefficient:
-2.94
Temp.:
20 °C
Remarks on result:
other: pH value was not determined as it was a preliminary screening test.
Details on results:
The estimated Partition Coefficient was calculated as the ratio of the concentrations of the test substance in water and in n-octanol (without pH correction).

The Partition Coefficient was calculated using the formula: POW= c (n-octanol) / c (water).


 





















Measurement



POW



log POW



1



0.00097



-3.01



2



0.00136



-2.87



 


The mean value of the log POW was determined as -2.94.

Conclusions:
The log Pow of the test item was determined to be - 2.94.
Executive summary:

The octanol-water partition coefficient of the registered substance was determined in an experimental study according to Regulation (EC) No. 440/2008 method A.8 and OECD Test Guideline 107. In a preliminary test determining the solubility in the individual solvents, the log Pow was determined as - 2.94. As this value was outside of the applicability domain of the potential tests, no further tests were performed.

Description of key information

The log Pow of the test item was determined to be - 2.94 (reference 4.7-1).

Key value for chemical safety assessment

Log Kow (Log Pow):
-2.94
at the temperature of:
20 °C

Additional information

The octanol-water partition coefficient of the registered substance was determined in an experimental study according to Regulation (EC) No. 440/2008 method A.8 and OECD Test Guideline 107. In a preliminary test determining the solubility in the individual solvents, the log Pow was determined as - 2.94. As this value was outside of the applicability domain of the potential tests, no further test were performed.


Additionally, the Partition Coefficient was calculated with the atom/fragment contribution method KOWWIN v1.68 as log POW = -2.58.