Registration Dossier

Environmental fate & pathways

Adsorption / desorption

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The Koc of 2-methylbutane was read across within the category from n-pentane. The n-pentane Koc of 794.3 (log Koc of 2.9) was calculated in accordance with the TGD using the log Kow of 3.45. 

Key value for chemical safety assessment

Koc at 20 °C:
794.3

Additional information

The Koc of 2 -methylbutane was read across within the category from n-pentane. The calculated Koc of 794.3 of n-pentane was used in the EU RAR for n-pentane and so is considered suitable as key study for this endpoint. This value indicates that although the adsorptivity of n-pentane and thus 2 -methylbutane is moderate it still has good mobility in the environment.