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EC number: 406-080-7 | CAS number: 83016-70-0 JEFFCAT ZF-10; TEXACAT ZF-10
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:
- 2003-02-26 to 2003-05-05
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- yes
- Remarks:
- Report represents data generated in the “spirit of” Good Laboratory Practice. GLP deviations were that a Study Plan was not written, however Study-Specific Supplements were provided to study personnel describing laboratory work in detail.
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): Jeffcat ZF-10, 2-((2-(2-(dimethylamino)ethoxy)ethyl)methyl-amino)-ethanol
- Substance type: Amine
- Physical state: clear, colourless liquid
- Analytical purity: 99%
- Lot/batch No.: 324756
- Storage condition of test material: 22 °C in the dark - Analytical method:
- gas chromatography
- Key result
- Type:
- log Pow
- Partition coefficient:
- -0.48
- Temp.:
- 26 °C
- pH:
- 11
- Type:
- Pow
- Partition coefficient:
- 0.331
- Temp.:
- 26 °C
- pH:
- 11
- Details on results:
- - The pHs of the Aqueous Test Phases were estimated at 11, based on the calculated pKa of 8.9.
- The overall mass balance was 103 ± 5 % (based on observed concentrations of the test substance in the Octanol and Aqueous Test Phases)
- The observed log Pow values ranged from 0.324 to 0.345, with an average of 0.331 ± 0.008 (log10(Pow) = -0.48 ± 0.01) at 26 °C. - Conclusions:
- The test substance was detected in all Octanol and Aqueous Test Phases and a Partition Corfficient (Pow) of 0.331 ± 0.008 (log10(Pow) = -0.48 ± 0.01 at 26°C was determined.
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1990-06-27 to 1990-07-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Study conducted according to methods described in EEC Directive 67/548, Annex V, A8, as published in 84/449/EEC. Study follows GLP. Study methods similar to OECD guideline 107.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - Shake Flask Method)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): Jeffcat ZF-10, 2-((2-(2-(dimethylamino)ethoxy)ethyl)methyl-amino)-ethanol
- Substance type: Amine
- Physical state: Clear colourless liquid
- Analytical purity: 99%
- Lot/batch No.: 324756
- Storage condition of test material: 22 °C in the dark - Analytical method:
- other: Gas chromatography
- Type:
- log Pow
- Partition coefficient:
- -0.55
- Temp.:
- 23 °C
- pH:
- 10.15
- Conclusions:
- The partition coefficient (n-octanol/water) of the test substance has been determined to be log Pow= -0.55 at 23°C.
Referenceopen allclose all
The calibration curve from the calibration solutions showed a linear regression correlation coefficient of 0.9992, indicating acceptable method precision for the analysis of the test substance. The Limit of Detection (LOD) was estimated at 8 micrograms/mL.
Description of key information
The partition coefficient of the test substance was determined to be 0.331 ± 0.008 (log10(Pow) = -0.48 ± 0.01 at 26°C) according to the OECD guideline 105 performed by BC Research Inc. (2003). GLP deviations were that a study plan was not written, however study-specific supplements were provided to study personnel describing laboratory work in detail. The study was considered to be reliable without restrictions (Klimisch 1).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -0.48
- at the temperature of:
- 26 °C
Additional information
A supporting study according to the OECD 105, performed by Huntingdon Research Centre Ltd. (1990) and considered to be reliable without restrictions (Klimisch 1) reports a log Pow of -0.55 at 23°C which is in line with the key value.
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