Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Partition coefficient

Currently viewing:

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 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was not possible. Based on an HPLC method, the log Kow was measured to be in the range 0.59 - 3.79. As an intermediate value, the log Kow measured for DIPE (2.37), which is one of the main constituents with ca. 30% of the substance is proposed.

Key value for chemical safety assessment

Log Kow (Log Pow):
2.37
at the temperature of:
25 °C

Additional information

Determining a single log Kow for a multiconstituent substance like reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was not possible. Based on an HPLC method, the log Kow was determined to be in the range 0.59 - 3.79. As an intermediate value, the log Kow measured for DIPE (2.37), which is one of the main constituents with ca. 30% of the substance is proposed.

Literature log Kow values of the main components of the reaction mass lie within the same range as the QSAR estimated or experimentally determined values discussed above: DSBE: 2.87 -3.21 (1, 3); DIPE: 1.52 (2); SBA: 0.61 (3); TBA: 0.35 (3), thus confirming the validity of the measured data.

References:

(1) Estimation Program Interface (EPI) Suite,2000-2009, U.S. Environmental Protection Agency (see HPV-report)

(2) Noriaki Funasaki, Sakae Hada, Saburo Neya, J. Phys. Chem., 1985, 89 (14), pp 3046–3049: Partition coefficients of aliphatic ethers - molecular surface area approach

(3) Hansch, C., and Leo, A. (1995).Exploring QSAR. Fundamentals and Applications in Chemistry and Biology.ACS Professional Reference Book, American Chemical Society, Washington, DC.