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EC number: 270-691-3
CAS number: 68476-52-8
A complex combination of hydrocarbons produced by distillation of products from a cracking process in an ethylene plant. It consists predominantly of C4 hydrocarbons.
The calculated 48h LC50 for representative substances within this Category showed a short term toxicity to aquatic invertebrates to be in the range 11 - 24 mg/l.
Members of this category are gases at
standard temperature and pressure, therefore conducting an aquatic
ecotoxicity test is technically difficult and based on exposure
estimates the test may not be relevant. In addition, it is difficult to
assess the toxicity of UVCB streams using standard test methods.
Instead, it is more appropriate to consider the toxicity of
representative components of these streams.
Therefore, the use of a QSAR to predict the
ecotoxicity of representative components of these streams is an
appropriate technique to use as part of a weight of evidence approach.
The use of ECOSAR is appropriate for this Category as these streams
falls within the applicability domain of the model.
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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