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EC number: 202-945-6 | CAS number: 101-48-4
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 04-Nov-2015 to 02-Dec-2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Staatliches Gewerbeaufsichtsamt Hildeshelm
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Key result
- Type:
- log Pow
- Partition coefficient:
- 2.23
- Temp.:
- 24.7 °C
- Remarks on result:
- other: No pH value was measured for this mobile phase, because it is neutral.
- Conclusions:
- A log Pow range of 2.23 (at 24.7 °C) was determined for the two isomers of the test item according to E.U. Method A.8.
Reference
Results of Test Item Analysis
The mean temperature of 24.7 °C was inside the range of 20 - 25 °C ± 1 °C during the course of the study.
The table contains the retention time data and calculated log k values of the test item. Two individual log Pow values were derived under consideraton of the first and second calibration. Finally, a mean value was calculated from these individual log Pow values.
Retention Times, Capacity Factors and Partition Coefficients of the test item
Test item |
tR (min) |
k |
Log k |
Log Pow |
|
5.647 |
8.89 |
0.949 |
1st calibration |
2nd calibration |
|
5.649 |
8.89 |
0.949 |
2.23 + 0.05 2.10 to 2.36 (95% CI) |
2.23 + 0.05 2.10 to 2.36 (95% CI) |
|
Mean |
5.648 |
8.89 |
0.949 |
2.23 |
|
tR: Retention time
k: Capacity factor test item
Pow : Partition Coefficient (n-octanol / water)
CI : Confidence Interval
Conclusions
Two individual log Pow values for the test item were derived under consideration of the first and second calibration. A mean value was calculated from these individual log Pow values to be 2.23.
Description of key information
Log Pow: 2.23 at 24.7 °C (EU Method A.8, HPLC method)
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.23
- at the temperature of:
- 24.7 °C
Additional information
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