Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 946-322-3 | 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
- Study period:
- This study was conducted between 20 September 2016 and 20 January 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study is considered to be a reliability 1 as it has been conducted according to OECD TG 117 (HPLC method) and in compliance with GLP.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Version / remarks:
- 13 April 2004
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - HPLC Method)
- Version / remarks:
- EC 440/2008 of 30 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- I
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- >= 0.969 - ca. 6.5
- Temp.:
- 20 °C
- Remarks on result:
- other: pH value is not available
- Details on results:
- Log 10 Pow:0.969 to >6.5 (95.8% having a log10Pow of 4.46).
Partition coefficient 9.31 to >3.16 x 106 (95.8% having a partition coefficient of 2.9 x E04),
pH - Conclusions:
- The partition coefficient of the test item has been determined as log P 0.969 to > 6.5 (95.8% having a log10 Pow of 4.46) under OECD TG 117 (HPLC method) in compliance with GLP.
- Executive summary:
The partition coefficient of the test item has been determined as log P 0.969 to > 6.5 (95.8% having a log10 Pow of 4.46) under OECD TG 117 (HPLC method).
Reference
Calibration The retention times of the dead time and the retention times, capacity factors (k') and log10 Pow values for the reference standards are shown in the following tables:
| Dead Time | Retention Time (mins) | Mean Retentions Time (mins) | |
| Injection 1 | Injection 2 | ||
| Thiourea | 1.837 | 1.837 | 1.837 |
| Standard | Mean retention Time (mins, n=2) | Capacity factor (k') | Log10 k' | Log10 Pow |
| 2 -Butazone | 2.043 | 0.112 | -0.949 | 0.3 |
| Benzene | 2.609 | 0.421 | -0.373 | 2.1 |
| Toluene | 3.003 | 0.635 | -0.197 | 2.7 |
| Naphthalene | 3.280 | 0.786 | -0.105 | 3.6 |
| Phenanthrene | 4.422 | 1.41 | 0.148 | 4.5 |
| DDT | 9.577 | 4.21 | 0.625 | 6.5 |
| Peak Number | Injection | Retention Time (mins) | Capacity factor (k') | Log10 k' | Log10 Pow | Average Log10 Pow | % Area |
| 1 | 1 | 2.196 | 0.196 | -0.708 | 0.982 | 0.969 | 0.19 |
| 2 | 2.191 | 0.193 | -0.714 | 0.957 | |||
| 2 | 1 | 2.672 | 0.455 | -0.342 | 2.47 | 2.48 | 0.22 |
| 2 | 2.677 | 0.458 | -0.339 | 2.48 | |||
| 3 | 1 | 3.003 | 0.635 | -0.197 | 3.06 | 3.06 | 1.37 |
| 2 | 3.003 | 0.635 | -0.197 | 3.06 | |||
| 4 | 1 | 4.422 | 1.41 | 0.148 | 4.47 | 4.46 | 95.8 |
| 2 | 4.417 | 1.40 | 0.148 | 4.46 | |||
| 5 | 1 | 16.327 | 7.89 | >0.625 | >6.5 | >6.5 | 2.45 |
| 2 | 16.283 | 7.87 | >0.625 | >6.5 |
Range log10 Pow: 0.969 to >6.5 (95.8% having a log10Pow of 4.46)
Partition coefficient: 9.31 to >3.16 x 106 (95.8% having a partition coefficient of2.9 x 104)
The result from the preliminary test indicated that the HPLC method was suitable for determination of partition coefficient for this test item.
Description of key information
The partition coefficient of the test item has been determined as log P 0.969 to > 6.5 (95.8% having a log 10 Pow of 4.46) under OECD TG 117 (HPLC method) in compliance with GLP.
Key value for chemical safety assessment
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
