Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 203-449-2 | CAS number: 106-98-9
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
