Registration Dossier
Registration Dossier
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EC number: 237-859-8 | CAS number: 14024-61-4
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:
- other: GLP compliant unpublished guideline experimental study, reliable without restriction
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Type:
- log Pow
- Partition coefficient:
- 2.6
- Temp.:
- 25 °C
- pH:
- 5.2
- Remarks on result:
- other: Injection 1
- Type:
- log Pow
- Partition coefficient:
- 2.6
- Temp.:
- 25 °C
- pH:
- 5.2
- Remarks on result:
- other: Injection 2
- Type:
- log Pow
- Partition coefficient:
- 2.6
- Temp.:
- 25 °C
- pH:
- 5.2
- Remarks on result:
- other: Final result
- Details on results:
- The dead time was calculation as 2.44 minutes and Log Pow was calculated as 2.6
- Conclusions:
- The partition coefficient (Log Pow) was found to be 2.6
- Executive summary:
The partition coefficient n-octanol/water of Palladium (II) di(4 -oxopent-2 -en-2 -oate) was determined according to the HPLC method described in the European Commission Regulation (EC) No. 440/2008. It was found to be: Log Pow = 2.6
The study is a GLP compliant unpublished guideline study and is deemed to be reliable with-out restriction.
Reference
Preliminary visual estimation of the water solubility
| Amount of test item (mg) | Total volume (mL) | Appearance of mixture |
| 7.6 | 100 | undissolved |
| 11.5 | 500 | undissolved |
| 4.9 | 500 | undissolved |
Preliminary visual estimation of the n-octanol solubility:
| Total amount of test item (mg) | Added volume of n-octanol (mL) | Total amount of n-octanol (mL) | Stirring time (h) | Appearance of mixture |
| 7.5 | 10 | 10 | 2 | dissolved |
| 35.7 | - | 10 | 42.5 | undissolved |
Determination of dead time (t0):
| Dead time marker | tR/min1. measurement | tR/min2. measurement | tR/minMean |
| Formamide | 2.44 | 2.44 | 2.44 |
Log Pow of test item 1st injection
| tR/min | k | log k | log Pow |
| 4.96 | 1.03 | 0.01 | 2.6 |
Log Pow of test item 2nd injection
| tR/min | k | log k | log Pow |
| 4.96 | 1.03 | 0.01 | 2.6 |
Description of key information
The log Pow for palladium II di(4-oxopent-2-en-2-oate) has been determined to be 2.6 at 25 °C.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.6
- at the temperature of:
- 25 °C
Additional information
Winkler (2015) is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. The Log Pow for palladium (II) di(4-oxopent-2-en-2-oate) has been determined as 2.6 at 25°C.
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