Registration Dossier
Registration Dossier
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EC number: 292-564-1 | CAS number: 90640-45-2
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The partition coefficient of Amines, N-C16-22-alkyltrimethylenedi- was assessed in aqueous buffers prepared at pH 4, 7 and 9 according to OECD 123 guideline and GLP requirements. The partition coefficient was calculated for two representative components, namely the alkyltrimethylenediamines of chain length C16 and C18. Results were shown to be as follows:
pH 4 Buffer:
For C16 Log Pow = 3.16 ± 0.004
For C18 Log Pow = >3.27 ± 0.012
pH 7 Buffer:
For C16 Log Pow = >3.23 ± 0.004
For C18 Log Pow = >3.23 ± 0.007
pH 9 Buffer:
For C16 Log Pow = >3.18 ± 0.013
For C18 Log Pow = >3.19 ± 0.018
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.2
- at the temperature of:
- 25 °C
Additional information
As the log Pow values depend on the pH conditions and on the carbon chain length of each component of this UVCB, considering the results obtained, an approximate value of 3.2 was selected as representative for the substance for chemical safety assessment purposes.
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