Isobutylene Four carbonBranched Alkene
Get Latest PricePayment Type: | L/C,T/T |
Incoterm: | FOB,CFR,CIF,EXW |
Transportation: | Ocean,Land,Air,Express |
Port: | Dalian,Tianjin,Shanghai |
Payment Type: | L/C,T/T |
Incoterm: | FOB,CFR,CIF,EXW |
Transportation: | Ocean,Land,Air,Express |
Port: | Dalian,Tianjin,Shanghai |
Place Of Origin: China
Grade: Industrial Grade
Boiling Point: 19.4°F (-7°C)
Molar Mass: 56.106 g/mol
Density: 588 kg/m³
Chemical Formula: C4H8
UN Number: 1055; In Liquefied petroleum gas: 1075
Flash Point: flammable gas
Solubility In Water: Insoluble
Selling Units | : | Others |
Isobutylene is a colorless gas, or a liquid under pressure, with a sweet, gasoline odor. It is used in the production of aviation gasoline, resins, other chemicals, and antioxidants for food, packaging, and plastics.
Isobutylene (also called 2-methylpropene, isobutene, and γ-butylene because chemists aren't wonderful at sticking to a one naming system) is a colourless, gaseous hydrocarbon at room temperature. Its flash point is -80 ˚C meaning that above this temperature, if an ignition source is present, isobutylene will ignite.
Polymer and Chemical Grade Isobutylene is typically obtained by dehydrating tertiary butyl alcohol (TBA) or catalytic dehydrogenation of isobutane (Catofin or similar processes). Gasoline additives methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE), respectively, are produced by reacting methanol or ethanol with isobutylene contained in butene streams from olefin steam crackers or refineries, or with isobutylene from dehydrated TBA. Isobutylene is not isolated from the olefin or refinery butene stream before the reaction as separating the ethers from the remaining butenes is simpler. Isobutylene can also be produced in high purities by "back-cracking" MTBE or ETBE at high temperatures and then separating the isobutylene by distillation from methanol or
Isobutylene is a byproduct in the ethenolysis of diisobutylene to prepare neohexene:
(CH3)3C-CH=C(CH3)2 + CH2=CH2 → (CH3)3C-CH=CH2 + (CH3)2C=CH2
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