Registration Dossier
Registration Dossier
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EC number: 476-880-9 | 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 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: The partition coefficient was estimated using the solubility data in n-octanol and water from the pre-tests.
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- < -5.46
- Remarks on result:
- other: Room temperature, no data on pH.
- Conclusions:
- In conclusion, the partition coefficient, log Pow, of the test substance was calculated from the individual solubilities in n-octanol and in water, respectively, to be: log Pow < - 5.46
- Executive summary:
In the preliminary test, a good solubility in water and a very poor solubility in n-octanol were found indicating a partition coefficient below -2. Hence, a main test according to OECD Guidelines 107/117 (either HPLC or flask shaking method) could not be applied. Therefore the partition coefficient of the test substance was estimated using the solubility data in n-octanol and water from the pre-tests.
In conclusion, the partition coefficient, log Pow, of the test substance was calculated from the individual solubilities in n-octanol and in water, respectively, to be: log Pow < - 5.46
Reference
Determination at room temperature. No data provided on pH.
Description of key information
Key study: In the preliminary test, a good solubility in water and a very poor solubility in n-octanol were found indicating a partition coefficient below -2. Hence, a main test according to OECD Guidelines 107/117 (either HPLC or flask shaking method) could not be applied. Therefore the partition coefficient of the test substance was estimated using the solubility data in n-octanol and water from the pre-tests.
In conclusion, the partition coefficient, log Pow, of the test substance was calculated from the individual solubilities in n-octanol and in water, respectively, to be: log Pow < - 5.46
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -5.46
Additional information
Key study: In the preliminary test, a good solubility in water and a very poor solubility in n-octanol were found indicating a partition coefficient below -2. Hence, a main test according to OECD Guidelines 107/117 (either HPLC or flask shaking method) could not be applied. Therefore the partition coefficient of the test substance was estimated using the solubility data in n-octanol and water from the pre-tests.
In conclusion, the partition coefficient, log Pow, of the test substance was calculated from the individual solubilities in n-octanol and in water, respectively, to be: log Pow < - 5.46
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