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Isobutylene

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Identification
Molecular formula
C4H8
CAS number
115-11-7
IUPAC name
2-methylprop-1-ene
State
State

At room temperature, isobutylene is a gas. It is often handled as a liquefied gas under pressure.

Melting point (Celsius)
-140.40
Melting point (Kelvin)
132.80
Boiling point (Celsius)
-6.90
Boiling point (Kelvin)
266.20
General information
Molecular weight
56.11g/mol
Molar mass
56.1070g/mol
Density
0.5874g/cm3
Appearence

Isobutylene is a colorless gas with a faint petroleum-like odor. It is typically stored and transported as a liquefied gas under pressure.

Comment on solubility

Solubility of 2-methylprop-1-ene

2-methylprop-1-ene, a branched alkene, exhibits some interesting solubility characteristics:

  • Solubility in Water: This compound is mostly insoluble in water. The reason for this is its nonpolar hydrocarbon structure, which does not interact favorably with polar water molecules.
  • Solubility in Organic Solvents: On the other hand, 2-methylprop-1-ene is readily soluble in nonpolar organic solvents. Some common examples include:
    • Hexane
    • Chloroform
    • Ethanol (to some extent)
  • Practical Implications: This solubility behavior makes 2-methylprop-1-ene useful in various industrial applications, especially in processes where nonpolar solvents are used.

In summary: While 2-methylprop-1-ene is insoluble in water due to its nonpolar nature, it finds great utility in nonpolar solvents. Understanding these solubility properties is crucial for its application in synthesis and reaction conditions.

Interesting facts

Phenomenal Facts about 2-Methylprop-1-ene

2-Methylprop-1-ene, also known as isobutylene, is an intriguing compound in the field of organic chemistry. This compound is classified as an alkene, characterized by its carbon-carbon double bond. Here are some fascinating aspects to consider:

  • Key Role in Polymer Production: 2-Methylprop-1-ene serves as a crucial building block in the synthesis of various polymers. It is primarily used to produce polyisobutylene, a rubber-like material commonly employed in adhesives and sealants.
  • Gas at Room Temperature: Being a gas at room temperature allows 2-methylprop-1-ene to be efficiently transported and stored, making it a valuable commodity in the chemical industry.
  • Famous For: This compound is often referenced in discussions about fuel additives and is an important component in the production of high-performance gasoline.
  • Environmental Impact: Interestingly, 2-methylprop-1-ene is less dense than air and has a lower environmental impact compared to other hydrocarbons, as it contributes to a reduced greenhouse effect.
  • Unique Isomeric Forms: 2-Methylprop-1-ene has isomeric forms, showcasing the beauty of molecular diversity. These more complex isomers may exhibit varying physical and chemical properties.

Its unique properties and versatile applications make 2-methylprop-1-ene a remarkable subject for study in organic chemistry. As chemists delve into its uses, they uncover a wealth of information that highlights the compound's significance in both industrial and environmental contexts.

Synonyms
ISOBUTYLENE
Isobutene
2-methylprop-1-ene
2-Methylpropene
115-11-7
2-Methyl-1-propene
2-Methylpropylene
1,1-Dimethylethylene
1-Propene, 2-methyl-
Isopropylidenemethylene
Methylpropene
gamma-Butylene
Propene, 2-methyl-
1,1-Dimethylethene
iso-butene
i-butene
unsym. dimethylethylene
CCRIS 2281
HSDB 613
UNII-QA2LMR467H
EINECS 204-066-3
QA2LMR467H
2-METHYL-D3-PROPENE
DTXSID9020748
CHEBI:43907
Isobutene (ca. 9% in Hexane)
Isobutene (ca. 6% in Toluene)
EC 204-066-3
MFCD00008898
Isobutene (ca. 8% in Dichloromethane)
Isobutene (ca. 15% in Tetrahydrofuran)
Isobutene (ca. 10% in Isopropyl Ether)
2-METHYL-D3-PROPENE-3,3,3-D3
42278-27-3
sym-Dimethylethylene
2-methyl-2-propene
UN1055
isobutylene, various grades
iso-butylene
Isobutene trimer
2-Methylpropyline
.gamma.-Butylene
2-methyl-l-propene
2-methyl-2 propene
iso-C4H8
2-Methylpropene, 99%
ISOBUTYLENE [MI]
ISOBUTYLENE [HSDB]
Unsymmetrical dimethylethylene
ISOBUTYLENE [WHO-DD]
DTXCID90748
Propene, 2-methyl-, tetramer
1,3-Propanediyl, 2-methylene-
DTXSID50164803
DTXSID601307041
2-Methylpropene, purum, >=99.5%
AKOS000121111
UN 1055
FP168349
I0091
I0909
I0910
I0911
I1082
I1083
NS00007976
InChI=1/C4H8/c1-4(2)3/h1H2,2-3H
A803373
Q776976
13001-05-3
204-066-3