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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:
03/09/2014 to 10/09/2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.8 (Partition Coefficient)
Deviations:
no
GLP compliance:
no
Type of method:
flask method
Partition coefficient type:
octanol-water
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: SBL/027/LRB
Analytical method:
high-performance liquid chromatography
Type:
log Pow
Partition coefficient:
< -3.56
Temp.:
20 °C
Remarks on result:
other: pH is not available
Details on results:
Pow : 0.000271

Calculation of the partition coefficient log Pow from the preliminary tests

The partition coefficient P ow may be estimated from the saturation concentrations in n-octanol and water by the following equation:

P ow = cs octanol /cs water

s= saturation

With the data obtained from the experiments in preliminary visual estimation of the n-octanol solubility (cs < 20 mg/l) and in the preliminary test (water solubility: cs = 12.9 g/l) the partition coefficient was calculated as log POW < -2.8

Due to the fact, that the n-octanol solubility is below the LoQ, the partition coefficient n-octanol/water has to be estimated from the individual solubilities in water and n-octanol.

Calculation of the partition coefficient log Pow from the individual solubility in water and n-octanol

By means of the flask method, the saturation concentration of the test item in n-octanol was determined to: <3.5 mg/l.

By means of the flask method, the saturation concentration of the test item in water was determined to: 12.9 g/l

Conclusions:
The partition coefficent n-octanol/water (log Pow) of FAT 40062/C was determined to <-3.56.
Executive summary:

The partition coefficent n-octanol/water of FAT 40062/C was carried out according to OECD guideline 107 and EU method A.8 using flask method. With the data obtained from the experiments in preliminary visual estimation of the n-octanol solubility (cs < 20 mg/l) and in the preliminary test (water solubility: cs = 12.9 g/l) the partition coefficient was calculated as log POW<-2.8. In conclusion, based on the study results, the partition coefficent n-octanol/water of the test item at 20°C, from the individual solubilities in water and n-octanol, was determined to log Pow = <-3.56.

Description of key information

The partition coefficent n-octanol/water of FAT 40062/C was carried out according to OECD guideline 107 and EU method A.8 using flask method. With the data obtained from the experiments in preliminary visual estimation of the n-octanol solubility (cs < 20 mg/l) and in the preliminary test (water solubility: cs = 12.9 g/l) the partition coefficient was calculated as log POW< -2.8. In conclusion, based on the study results, the partition coefficent n-octanol/water of the test item at 20°C, from the individual solubilities in water and n-octanol, was determined to log Pow = < -3.56.

Key value for chemical safety assessment

Log Kow (Log Pow):
-3.56
at the temperature of:
20 °C

Additional information