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EC number: 295-405-4
CAS number: 92045-23-3
A complex combination of hydrocarbons produced by the distillation of the products of a steam cracking process. It consists predominantly of hydrocarbons having a carbon number of C4, predominantly 1-butene and 2-butene, containing also butane and isobutene and boiling in the range of approximately minus 12°C to 5°C (10.4°F to 41°F).
Based on the physicochemical properties, the
members of theC4,
high 1.3-butadiene (≥0.1%)
can be expected to have a low
potential for adsorption (Kow < 3).
Based on the Henry's Law Constant range of
7150 to 98200 Pa m³/mol, the estimated half-life of streams in this
category ranges from 45.4 to 46.7 minutes in a river and 69.9 to 72.4
hours in a lake. Based on Pedersen et al (1995), these substances would
meet the criteria for total degradation of half-life <6 days, which is
equivalent to removal from the water phase of >95% in 28 days, therefore
the members in this category are not expected to be persistent in the environment.
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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