Registration Dossier
Registration Dossier
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EC number: 425-270-0 | CAS number: 134620-00-1
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06 March 1995 - 28 April 1995
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study, conducted to GLP. Limited reporting detail.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Version / remarks:
- (of Directive 92/69/EEC)
- Deviations:
- yes
- Remarks:
- Reporting detail limited (e.g. missing information on purity)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Type:
- log Pow
- Partition coefficient:
- < -2.73
- Temp.:
- 20 °C
- pH:
- 8.5
- Remarks on result:
- other: pH of stock solution
- Details on results:
- Mean Pow < 1.85 x 10^-3.
- Conclusions:
- In a guideline-compliant study, conducted to GLP, the n-octanol/water partition coefficient (log Pow) of tetraamminepalladium(II) hydrogen carbonate was determined to be < -2.73.
- Executive summary:
In a guideline-compliant study, conducted to GLP, the n-octanol/water partition coefficient of tetraamminepalladium(II) hydrogen carbonate was determined by the shake-flask method and photometric analysis (at 200 nm) to be < 1.85 x 10^-3. This corresponds to a log Pow of < -2.73. The partition coefficient was determined at 20 deg C; the pH of the stock solution was 8.5.
Reference
| Sample number | n-Octanol/water volume/ratio |
Partition coefficient | Log10 Pow |
| 1 | 10:1 | < 6.90 x 10^-4 | < -3.16 |
| 2 | 10:1 | < 1.65 x 10^-3 | < -2.78 |
| 3 | 5:1 | < 1.85 x 10^-3 | < -2.73 |
| 4 | 5:1 | < 1.62 x 10^-3 | < -2.79 |
| 5 | 5:2 | < 9.23 x 10^-4 | < -3.04 |
| 6 | 5:2 | < 5.15 x 10^-4 | < -3.29 |
Description of key information
In a guideline-compliant study, conducted to GLP, the n-octanol/water partition coefficient (log Pow) of tetraamminepalladium(II) hydrogen carbonate was determined to be < -2.73 (Lumsden et al., 1997).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -2.73
- at the temperature of:
- 20 °C
Additional information
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