Registration Dossier
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EC number: 275-532-1 | CAS number: 71487-01-9
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:
- 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method)
- GLP compliance:
- no
- Type of method:
- other: HPLC-ELSD was used to determine the Test Item in the 1-octanol phase and a UV-VIS Spectrophotometer for the water phase samples,
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- The commercial product containing the "substance", Quaternary ammonium compounds, di-C12-18-alkyldimethyl, nitrites, CAS Number 71487 -01 -9, EC Number 275 -532 -1, in organic solvents, methanol and isopropanol (ca. 32%) was utlised for this study. Prior to this study being undertaken, these solvents were removed by, firstly, leaving the sample under a stream of nitrogen to remove the majority of the solvent(s) and, secondly, evaporating the remaining residual solvent(s) under vacuum at 60 degress C to constant dried weight of the test item. After solvent removal the substance was identified to be a yellow viscous liquid / wax like solid.
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- ca. 2.75
- Temp.:
- 25 °C
- pH:
- 7
- Conclusions:
- The Log Pow values for each C-chain at each sampling time have been recorded and are determined to be 2.7-2.8. Given the known carbon chain length distribution a log Pow value of 2.75 is determined to be representative of the substance.
- Executive summary:
The partition coefficient of the test item (Quaternary ammonium compounds, di-C12-18-alkyldimethyl, nitrites, CAS Number 71487-01-9, EC Number 275-532-1) was investigated in a study that was conducted according to OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method).
This study is assigned a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al (1997).
The Log Pow values for each C-chain at each sampling time have been recorded and are determined to be 2.7-2.8. Given the known carbon chain length distribution a log Pow value of 2.75 is determined to be representative of the substance.
Reference
Description of key information
The partition coefficient of the test item (Quaternary ammonium compounds, di-C12-18-alkyldimethyl, nitrites, CAS Number 71487-01-9, EC Number 275-532-1) was investigated in a study that was conducted according to OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method).
This study is assigned a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al (1997).
The Log Pow values for each C-chain at each sampling time have been recorded and are determined to be 2.7-2.8. Given the known carbon chain length distribution a log Pow value of 2.75 is determined to be representative of the substance.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.75
- at the temperature of:
- 25 °C
Additional information
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