Registration Dossier
Registration Dossier
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EC number: 613-645-3 | CAS number: 646505-36-4
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The average partition coefficient (log Pow) of 10 fractions of the substance was determined to be 2.8 at 25°C, according to OECD Guideline 117 (HPLC method).
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.8
- at the temperature of:
- 25 °C
Additional information
The substance is an UVCB and no information about the correlation between molecular weight and the structural formula of the test item are available. The chromatogram showed a mixture of 10 resolved peaks corresponding to 10 fractions with a log Pow range of 0.8 to 3.7. The Area % weighted log Pow for all peaks of the test item is determined to be 2.8. The percentage of total peak area was 100 %. The logPow refers to the non-hydrolysed form of the substance, as determinations were carried out in organic solvent, and hydrolysis on the HPLC column is not expected.
The main hydrolysis products of the substance are '2-ethyl-2-(hydroxymethyl)propane-1,3-diol, propoxylated, reaction product with methyl 3-oxobutanoate and 3-aminopropyldimethylamine with a measured log Pow of 2.5 and a calculated log Pow of - 0.45, respectively.
For assessment the highest log Kow of 2.8 of the parent substance is taken into account.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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