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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The results of the QSAR predictions (Howard et al. 1992, 2005) for the butenes category (but-1-ene (CAS 106-98-9), 2 -butene (CAS 107-01-7) and 2-methylpropene (CAS 115-11-7)) indicate that they are expected to degrade rapidly, with an estimated half life of 2 days to 2.8 days. These results indicate that they would not meet the criteria for persistent in the PBT assessment and do not indicate the potential for long term effects in the environment for the classification and labelling assessment.