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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

For each of the substances, measured data from author and other investigators were quality assessed and then used to develop rate constants for different chemicals. The values used to determine valid rate constancies are based on all valid studies at the time of publication. The photooxidative half lives for 2-methylbutane and n-pentane are 2.3 (Atkinson, 1985) and 3.95 days (Atkinson, 1985) respectively. Structural analysis of the substances indicates that they are not expected to undergo hydrolysis in the environment due to the lack of hydrolysable functional groups.