Registration Dossier
Registration Dossier
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EC number: 200-882-9 | CAS number: 75-59-2
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:
- 18 September 2012 - 17 December 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to other study
- Remarks:
- validated analytical method used for quantification of the water and octanol samples
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Version / remarks:
- (2008)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Version / remarks:
- (1995)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7550 (Partition Coefficient, n-octanol / H2O, Shake Flask Method)
- Version / remarks:
- (1996)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- high-performance liquid chromatography
- Key result
- Type:
- Pow
- Partition coefficient:
- < 0.036
- Temp.:
- 20 °C
- pH:
- 7
- Key result
- Type:
- log Pow
- Partition coefficient:
- < -1.4
- Temp.:
- 20 °C
- pH:
- 7
- Conclusions:
- The log Pow of the substance at pH 7 and 20°C was determined to be < -1.4 (Pow < 3.6 E-02).
- Executive summary:
The log Pow of the substance was determined using the shake-flask method in a GLP study according to EC A.8, OECD 107 and OPPTS 830.7550. The log Pow of the substance at pH 7 and 20°C was determined to be < -1.4 (Pow < 3.6 E-02).
Reference
Table: Results Shake flask method
Ratio n-octanol : water [v:v] |
Analysed concentration |
Pow |
log Pow
|
pH
|
||
n-octanol [g/l] |
Water [g/l] |
individual |
mean |
|||
|
|
|
|
|
|
|
1:1 |
<0.00498 |
0.140 |
<3.5 E-2 |
<3.5 E-2 |
< -1.5 |
7.0 |
<0.00495 |
0.140 |
<3.5 E-2 |
< -1.5 |
7.0 |
||
1:2 |
<0.00497 |
0.096 |
<5.2 E-2 |
<4.9 E-2 |
< -1.3 |
7.0 |
<0.00498 |
0.107 |
<4.6 E-2 |
< -1.3 |
7.0 |
||
2:1 |
<0.00488 |
0.217 |
<2.2 E-2 |
<2.5 E-2 |
< -1.6 |
7.0 |
<0.00497 |
0.185 |
<2.7 E-2 |
< -1.6 |
7.0 |
||
The log Pow values were within the criterion range of ± 0.3 log units. Based on this, the Pow and log Pow of the test substance are given as the mean value of all measurements.
Description of key information
log Pow at pH 7 and 20°C: < -1.4 (shake flask method: EC A.8, OECD 107, OPPTS 830.7550).
Pow at pH 7 and 20°C: < 3. 6 E-02.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.4
- at the temperature of:
- 20 °C
Additional information
Key value for CSA: log Pow < -1.4 at the temperature of 20°C
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