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EC number: 204-066-3
CAS number: 115-11-7
Members of the butenes category are
considered to be readily biodegradable on the basis of a weight of
evidence approach using data from QSARs and studies that have isolated
but-1-ene degrading micro-organisms. The butenes are also expected to
have low potentials for bioaccumulation and adsorption to soil and
sediment based on their measured log Kow of 2.31 to 2.4. Structural
analysis of the butene molecules indicates that they are not expected to
undergo hydrolysis in the environment due to the lack of hydrolysable
functional groups. The physico-chemical properties of butenes indicate
that the majority of the substances will ultimately be released to the
atmosphere where they are quickly photo-oxidised in approximately 0.5
days to 0.75 days.
The butenes are not expected to persist in
the environment because they are predicted to degrade rapidly, have a
low potential for adsorption to organic matter and have a low potential
for bioaccumulation. Therefore, in the PBT assessment, butenes are
considered to be not P/vP and not B/vB.
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.
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