Chemical Property of 2-Methylbuta-1,3-diene;2-methylprop-1-ene
Chemical Property:
- Vapor Pressure:549mmHg at 25°C
- Boiling Point:34.1°C at 760 mmHg
- PSA：0.00000
- LogP:1.58240
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:0
- Rotatable Bond Count:1
- Exact Mass:124.125200510
- Heavy Atom Count:9
- Complexity:74.1
- Purity/Quality:
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98%,99%, *data from raw suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:
- Statements:
10
- Safety Statements:
16
- MSDS Files:
-
SDS file from LookChem
Total 1 MSDS from other Authors
Useful:
- Chemical Classes:UVCB,Plastics & Rubber -> Plastic & Rubber Dusts/Fumes
- Canonical SMILES:CC(=C)C.CC(=C)C=C
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Description
A synthetic copolymer containing from 0.5 to 2.0 molar percent
of isoprene, the remainder, respectively, consisting of isobutylene.
It is prepared by copolymerization of isobutylene and isoprene in
methyl chloride solution, using aluminum chloride as the catalyst.
After completion of polymerization, the rubber particles aretreated with hot water containing a suitable food-grade deagglomerating agent, such as stearic acid. Finally, the coagulum is dried
to remove residual volatiles.
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Uses
Butyl rubber is formed from the polymerization of isobutene (isobutylene) with small amounts of chloroprene, isoprene, or butadiene and may be halogenated. The reaction is carried out in a closed system with an aluminum chloride catalyst. Butyl rubber is highly impervious to gases, which makes it the rubber best suited for inner tubes and tires, air chambers, adhesives, and dielectrics. Isobutene is an anesthetic and asphyxiant gas and can be hazardous in concentrations high enough to produce asphyxia. At these concentrations, explosion is an additional hazard.
