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Isobutane

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Identification
Molecular formula
C4H10
CAS number
75-28-5
IUPAC name
isobutane
State
State

Isobutane is a gas at room temperature. It is stored under pressure as a liquid in sealed containers.

Melting point (Celsius)
-159.60
Melting point (Kelvin)
113.55
Boiling point (Celsius)
-11.70
Boiling point (Kelvin)
261.45
General information
Molecular weight
58.12g/mol
Molar mass
58.1240g/mol
Density
2.5100g/cm3
Appearence

Isobutane is a colorless gas with a faint petroleum-like odor. It is generally encountered as a pressurized liquid in containers.

Comment on solubility

Solubility of Isobutane

Isobutane, also known as 2-methylpropane and represented by the chemical formula C4H10, exhibits unique solubility characteristics that align with its molecular structure. As a branched-chain alkane, its solubility behavior can be quite interesting:

  • Insoluble in Water: Isobutane is virtually insoluble in water due to its hydrophobic nature. The lack of polar functional groups means it does not interact favorably with water molecules.
  • Soluble in Organic Solvents: On the other hand, isobutane is highly soluble in non-polar organic solvents. This includes common solvents like hexane, benzene, and diethyl ether.
  • Temperature Effect: The solubility of isobutane in organic solvents can increase with temperature, highlighting the typical behavior of gases in liquids as they tend to dissolve better at higher temperatures.

In summary, the solubility of isobutane is a compelling demonstration of the principles of solubility governed by molecular polarity. It serves as a reminder that "like dissolves like," where non-polar solvents are ideal for dissolving non-polar solutes like isobutane.

Interesting facts

Interesting Facts about Isobutane

Isobutane, also known as methylpropane, is an intriguing branched-chain hydrocarbon that plays a crucial role in various chemical processes and everyday applications. Here are some fascinating aspects of this compound:

  • Structure and Isomerism: Isobutane is one of the simplest branched alkanes, and it is an isomer of butane. Its unique structure allows it to have distinct physical and chemical properties compared to its linear counterpart.
  • Uses in Industry: Isobutane is widely used as a feedstock in the petrochemical industry. It serves as a precursor for the production of important chemicals like butylene, which is vital for the manufacture of plastics and synthetic rubber.
  • Fuel Application: Due to its clean-burning properties, isobutane is often utilized as a fuel in portable stoves and lighters. Its high efficiency makes it an excellent choice for outdoor enthusiasts.
  • Refrigerant: Isobutane is a component of certain refrigerant blends, noted for its lower environmental impact compared to traditional refrigerants. It contributes to a decrease in ozone depletion and global warming potential.
  • Flavor and Fragrance: Interestingly, isobutane is also used in the food industry as a propellant for aerosol products, including whipped cream and flavoring sprays, ensuring the delivery of delicious treats in an easy-to-use format.

In conclusion, isobutane is more than just a simple hydrocarbon; it has a broad range of applications that contribute significantly to both industrial processes and consumer products. As a scientist, recognizing the versatility and importance of such compounds enriches our understanding of chemistry’s role in everyday life.

Synonyms
ISOBUTANE
2-Methylpropane
75-28-5
Trimethylmethane
Propane, 2-methyl-
1,1-Dimethylethane
iso-butane
R 600a
Caswell No. 503A
HSDB 608
R-600a
EINECS 200-857-2
Isobutane [NF]
UNII-BXR49TP611
EPA Pesticide Chemical Code 097101
BXR49TP611
CHEBI:30363
E943b
(CH3)2CH-CH3
DTXSID1026401
EC 200-857-2
Isobutane (NF)
ISOBUTANE (II)
ISOBUTANE [II]
ISOBUTANE (MART.)
ISOBUTANE [MART.]
2-METHYL-D3-PROPANE-1,1,1,3,3,3-D6
dimethylethane
Methylpropane
iso butane
tert-Butane
2-methylpropyl
i-Butane
H-tBu
ISOBUTANE [FCC]
iso-C4H10
2-Methylpropane, 99%
ISOBUTANE [HSDB]
ISOBUTANE [VANDF]
2-Methylpropane, puriss.
PROPANE, 2-METHYL
ISOBUTANE [WHO-DD]
DTXCID806401
2-Methylpropane, 99.995%
CHEMBL2106398
DTXSID60963546
MFCD00008926
AKOS015917447
UN 1969
DB-360584
I0090
NS00007329
D04623
Q407225
200-857-2