1520. 2-Butene
Nomenclature
CAS number: 107-01-7
Pseudo-butylene; sym-dimethylethylene; β-butylene. C4H8; mol wt 56.11.
C 85.62%, H 14.37%.
Description and references
Occurs in coal gas. Obtained by cracking of petroleum oils. From isobutanol by the action of hot ZnCl2: LeBel, Greene, Am. Chem. J. 2, 24 (1880). Configuration of the stereoisomeric forms: Kistiakowsky, J. Am. Chem. Soc. 57, 879 (1935).
Properties
Flammable gas.Derivative
(E)-Form.Nomenclature
CAS number: 624-64-6
Properties
mp -105.8°; bp744 0.3-0.4°.Derivative
(Z)-Form.Nomenclature
CAS number: 590-18-1