Registration Dossier
Registration Dossier
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EC number: 274-492-2 | CAS number: 70236-62-3
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
- Type:
- Pow
- Partition coefficient:
- ca. 0.221
- Temp.:
- 20 °C
- pH:
- 5.83
- Type:
- log Pow
- Partition coefficient:
- ca. -0.663
- Temp.:
- 20 °C
- pH:
- 5.83
- Details on results:
- The values are average Pow and average log Pow.
- Conclusions:
- Pow =0.2206 and log Pow =-0.6632 at 20 °C and pH=5.83
- Executive summary:
Partition coefficient test was carried out according to the OECD Guideline 107. The average Pow value is 0.2206 and the average log Pow value is -0.6632. These results are obtained at 20 °C and pH = 5.83.
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 = 0.0419 g / 100ml = 0.4190 g/l
| Ratio o/w | Water phase c (g/l) | n-octanol phase c (g/l) | Pow | log Pow | Average log Pow |
| 70/30 | 0.3736 | 0.1058 | 0.2833 | -0.547759 | -0.6553 |
| 70/30 | 0.3901 | 0.0674 | 0.1727 | -0.762816 | |
| 50/50 | 0.3373 | 0.0817 | 0.2421 | -0.616088 | -0.6888 |
| 50/50 | 0.3571 | 0.0619 | 0.1732 | -0.761427 | |
| 30/70 | 0.2714 | 0.0633 | 0.2332 | -0.632320 | -0.6456 |
| 30/70 | 0.2771 | 0.0608 | 0.2194 | -0.658788 |
| pH of the test solution: | 5.83 | ||
| Average Pow | 0.2206 | Average log Pow | -0.6632 |
| Std. Dev Pow | 0.0113 | Std. Dev log Pow | 0.023 |
Description of key information
-0.6632 at 20 °C and pH 5.83
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -0.663
- 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 0.2206 and the average log Pow value is -0.6632. These results are obtained at 20 °C and pH = 5.83.
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