Registration Dossier
Registration Dossier
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EC number: 939-618-9 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The octanol/water partition coefficient of the substance was determined by the HPLC method according to OECD Guideline 117. The octanol/water partition coefficient is 3.8 at 35°C.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.8
- at the temperature of:
- 35 °C
Additional information
Five peaks were found with log Kow values of <1.1, 3.0, 3.8, 4.0 and 4.3. These different peaks can be either constituents of the substance, impurities or degradation products. These degradation products could have been formed due to hydrolysis of the ester bond resulting in formic acid and the respective alcohol. The area % resulting from the UV detection should not be regarded as composition information of the test substance as the different components can have widely differing sensitivity on the UV detector. Therefore the area% might not be related to the actual composition of the test substance and it is thus difficult to identify which peak can be related to the main constituent of the substance, which to the minor one, which ones to the impurities and to the potential degradation products formic acid and the respective alcohol. The 1st peak is unlikely to be the substance or one of its constituents, because it has such a low log Kow. This was confirmed by QSAR calculations, and therefore this peak will be excluded for calculation of the log Kow. Peak 2-5 will be averaged for determining the overall log Kow. This results in a log Kow value of 3.78. This log Kow is well in line with the KowWin-EPISuite calculation (log Kow = 3.88) and the SPARC calculation (log Kow = 3.61) of the the substance main constituent.
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