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EC number: 943-688-6 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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)
- GLP compliance:
- no
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Key result
- Type:
- log Pow
- Partition coefficient:
- -1.384
- Temp.:
- 20 °C
- pH:
- 4.92
- Type:
- Pow
- Partition coefficient:
- 0.042
- Temp.:
- 20 °C
- pH:
- 4.92
- Conclusions:
- The average Pow value is 0.0418 and the average log Pow value is -1.3837 at 20 °C and pH = 4.92.
- Executive summary:
Partition coefficient test was carried out according to the OECD Guideline 107. The average Pow value is 0.0418 and the average log Pow value is -1.3837. These results are obtained at 20 °C and pH = 4.92.
Reference
At 96 hours values reached equilibrium, and so this value was considered for final calculations making duplicate determinations of every ratio o/w. Concentration of mother solution: W1 = 0.0395 g / 100ml = 0.3950 g/l.
| Ratio o/w | Water phase c (g/l) | n-octanol phase c (g/l) | Pow | log Pow | Average log Pow |
| 70/30 | 0.3889 | 0.0142 | 0.0366 | -1.436163 | -1.3922 |
| 70/30 | 0.3876 | 0.0174 | 0.0448 | -1.348300 | |
| 50/50 | 0.3824 | 0.0126 | 0.0329 | -1.482985 | -1.3996 |
| 50/50 | 0.3768 | 0.0182 | 0.0483 | -1.316210 | |
| 30/70 | 0.3620 | 0.0141 | 0.0390 | -1.408638 | -1.3592 |
| 30/70 | 0.3545 | 0.00174 | 0.0490 | -1.309686 |
| pH of the test solution: | 4.92 | ||
| Average Pow | 0.0418 | Average log Pow | -1.3837 |
| Std. Dev Pow | 0.0019 | Std. Dev log Pow | 0.022 |
Description of key information
-1.3837 at 20 °C and pH 4.92
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.384
- at the temperature of:
- 20 °C
Additional information
Partition coefficient test was carried out according to the OECD Guideline 107. The average Pow value is 0.0418 and the average log Pow value is -1.3837. These results are obtained at 20 °C and pH = 4.92.
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