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EC number: 255-288-2 | CAS number: 41272-40-6
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)
- Version / remarks:
- 1995
- GLP compliance:
- no
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Type:
- Pow
- Partition coefficient:
- 8.579
- Temp.:
- 20 °C
- Remarks on result:
- other: pH n.a.
- Type:
- log Pow
- Partition coefficient:
- 0.929
- Temp.:
- 20 °C
- Remarks on result:
- other: pH n.a.
- Conclusions:
- log Pow = 0.929 at 20 °C.
- Executive summary:
Method
Partition coefficient determined by shake flask method according to OECD guideline 107.
Results
log Pow = 0.929 at 20 °C; pH value, not available.
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 = 0.0406 g / 100ml = 0.4060 g/l.
| ratio o/w | water phase c(g/l) | n-octanol phase c(g/l) | Pow | log Pow | average log Pow |
| 70/30 | 0.0325 | 0.3302 | 10.1615 | 1.006960 | 10.015 |
| 70/30 | 0.0332 | 0.3286 | 9.9108 | 0.996109 | |
| 50/50 | 0.0427 | 0.3633 | 8.5091 | 0.929883 | 0.9328 |
| 50/50 | 0.0422 | 0.3638 | 8.6258 | 0.935798 | |
| 30/70 | 0.0549 | 0.3825 | 6.9608 | 0.842656 | 0.8530 |
| 30/70 | 0.0525 | 0.3835 | 7.3005 | 0.863352 | |
| pH of test solution | n.a. | ||||
| average Pow | 8.5788 | average log Pow | 0.929 | ||
| std. dev. Pow | 1.4528 | std. dev. log Pow | 0.074 | ||
Description of key information
0.929
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 0.929
- at the temperature of:
- 25 °C
Additional information
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