Registration Dossier
Registration Dossier
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EC number: 906-484-8 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
Determining a single log Kow for a multiconstituent substance like reaction mass of DIPE and 2-methylpent-2-ene was not possible. Based on an HPLC method, the log Kow was measured to be in the range 2.357 – 4.255 for the main components with an estimated overall range of 0 - 4.3 including hydrophilic impurities. The log Kow of DIPE (2.357) will be used as an intermediate value for the reaction mass for chemical safety assessment.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 2.357
- at the temperature of:
- 25 °C
Additional information
Determining a single log Kow for a multiconstituent substance like reaction mass of DIPE and 2-methylpent-2-ene
was not possible. Based on an HPLC method, the log Kow was measured to be in the range 2.357 – 4.255 for the main components with an estimated overall range of 0 - 4.3 including hydrophilic impurities.As an intermediate value, the log Kow measured for DIPE (2.357), which is one of the main constituents with ca. 40% of the substance is proposed.
Literature log Kow values of the main components of the reaction mass lie within a similar range as the experimentally determined values discussed above: estimated and measured values for DIPE: 1.52 - 2.4 (1, 2), estimated value for 2 -methyl-2 -pentene: 3.13 (3) thus confirming the validity of the measured data.
References:
(1) Noriaki Funasaki, Sakae Hada, Saburo Neya,J. Phys. Chem., 1985, 89 (14), pp 3046–3049: Partition coefficients of aliphatic ethers - molecular surface area approach
(2) Eadsforth, C.V. (1983) Isopropyl Ether: Determination of the n-Octanol/Water Partition Coefficient Using a Reverse-Phase HPLC Method, Shell Toxicology Laboratory (Tunstall), Sittingbourne Research Centre, Sittingbourne, Kent, ME9 8AG, England
(3) Estimation Program Interface (EPI) Suite,2000-2009, U.S. Environmental Protection AgencyInformation 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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