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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).
of the category are not expected to hydrolyse based on a lack of
hydrolysable functional groups. The kinetic rate constant for the
reaction of members of the category with OH radicals is reported to be
2.632 to 66.6 E-12 cm3/mol/s, indicating that the atmospheric half-life
with would be in the range 0.161 to 4.06 days (Atkinson,
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