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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

The n-pentane Koc of 794.3 was calculated in accordance with the TGD using the log Kow of 3.45 which resulted in a Log Koc of 2.9. This data was read across to the Hydrocarbon, C5, n-alkanes,isoalkanes. 

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

The calculated Koc of 794.3 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 is moderate it still has good mobility in the environment.