Registration Dossier
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EC number: 939-424-4 | CAS number: 1469983-44-5
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:
- 17/04/2012 - 01/08/2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Deviations:
- no
- Principles of method if other than guideline:
- Not relevant
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Type:
- Pow
- Partition coefficient:
- 2 290 - 40 600 000
- Temp.:
- 30 °C
- pH:
- 7
- Remarks on result:
- other: 73.4% of the UVCB has a Pow of 2.27x10^6 - 4.08x10^6
- Key result
- Type:
- log Pow
- Partition coefficient:
- 3.36 - 7.61
- Temp.:
- 30 °C
- pH:
- 7
- Remarks on result:
- other: 73.4% of the UVCB has a log Pow of 6.36 - 6.61
- Details on results:
- Results are based on two measurements.
Reference substances retention times:
2-Butanone: 2.039 min.
Benzene: 2.574 min.
Naphthalene: 3.233 min.
Phenanthrene: 4.554 min.
Triphenylamine: 6.623 min.
DDT: 7.345 min.
1-Phenyltridecane: 70.438 min.
Thiourea: 1.845 min. - Conclusions:
- The partition coefficient (log Pow) of Diacid 1550 is 3.36 - 7.61 at 30ºC and pH 7.
- Executive summary:
The partition coefficient of Diacid 1550 was investigated according to OECD guideline 117 under GLP using the HPLC method. The partition coefficient was found to be 3.36 - 7.61 at 30ºC and pH 7. 73.4% of the UVCB has a log Pow of 6.36 - 6.61.
Reference
For detailed results, see attached file "Results.doc".
Description of key information
3.36 - 7.61 at 30ºC and pH 7
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 6.5
- at the temperature of:
- 30 °C
Additional information
In a key study, the partition coefficient of Diacid 1550 was investigated according to OECD guideline 117 under GLP using the HPLC method. The partition coefficient was found to be 3.36 - 7.61 at 30ºC and pH 7. 73.4% of the UVCB has a log Pow of 6.36 - 6.61.
A supporting study reported a log Kow of 7.09 at pH 2. Because of the non-neutral pH at which this test was performed, it was selected as a supporting study.
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