Registration Dossier
Registration Dossier
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EC number: - | 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:
- 16 March 2020 - 14 July 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - Shake Flask Method)
- Version / remarks:
- 30 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Version / remarks:
- 13 April 2004
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- estimation method (solubility ratio)
- Partition coefficient type:
- octanol-water
- Key result
- Type:
- log Pow
- Partition coefficient:
- > 3.24
- Temp.:
- 20 °C
- pH:
- 7
- Details on results:
- The solution of test item and n-octanol was observed to be a light amber, single phase solution with no undissolved test item.
- Conclusions:
- The partition coefficient of the test item has been estimated to be greater than 1.74 x 10^3, log10 Pow >3.24.
- Executive summary:
Estimated to be greater than 1.74 x 10^3 at 20.0 ± 0.5 °C, log10 Pow >3.24, based on the solubility in n-octanol and water, designed to be compatible with Method A.8 Partition Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008, Method 107 of the OECD Guidelines for Testing of Chemicals, 27 July 1995 and Method 117 of the OECD Guidelines for Testing of Chemicals, 13 April 2004. Study conducted under GLP Conditions.
Reference
Approximate solubility in n-octanol: >5 x 10^5 mg/L
Approximate solubility in water: 288 mg/L
Approximate Pow: >1.74 x 10^3
Approximate log10 Pow: >3.24
Discussion
The HPLC estimation and shake-flask method were not used due to the test item being surface active.
Description of key information
Study conducted to recognised testing guidelines with GLP certification.
Key value for chemical safety assessment
Additional information
Estimated to be greater than 1.74 x 10^3 at 20.0 ± 0.5 °C, log10 Pow >3.24
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