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EC number: 204-066-3
CAS number: 115-11-7
Measured data are not available for the
terrestrial toxicity endpoints. In accordance with column 2 of REACH
Annex IX and X, the terrestrial toxicity tests do not need to be
conducted if direct and indirect exposure of the soil is unlikely to
occur. Butenes are gases at standard temperature and pressure and is
expected to partition primarily to air, therefore terrestrial toxicity
tests are not required.
In the absence of measured data, the ECOSAR
v1 ECOSAR, Nabholz and Mayo-Bean 2009) has
been used to calculate the toxicity of butenes to earthworms. The ECOSAR
model is a reliable and appropriate QSAR model to apply as it is based
on a related chemical dataset that calculates the toxicity of neutral
organic hydrocarbons whose mode of action is non-polar narcosis. The
endpoint calculated here is therefore a reasonable estimate of their
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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