Registration Dossier

Physical & Chemical properties

Partition coefficient

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The log kow values were calculated from EPIWEB using KOWWIN v1.68. The calculated log kow values gave a range of 2.03-2.17.

Key value for chemical safety assessment

Additional information

These values were calculated using EPIWEB to obtain KOWWIN v1.68 calculated values of the log kow for this substance. This method was used to obtain the log kow as physical testing was determined not to be feasible. The substance was sent for HPLC testing (OECD 117). The result from this testing was that the testing method was not feasible for this substance because it was a gas. The shake flask method (OECD 107) was deemed inappropriate as for testing as the substance was a gas. Therefore a (Q)SAR was used to calculate the log kow.

The substance is comprised of predominantly C4 hydrocarbons but ranges from C3-C5. For this reason the range given is the calculated range of C4 olefins. The range of C3-C5 olefins was also calculated (1.68-2.66) but was not used due to the substance being comprised of predominantly C4 hydrocarbons.