Skip to main content

Isooctane

ADVERTISEMENT
Identification
Molecular formula
C8H18
CAS number
107-83-5
IUPAC name
2,2,4,6,6-pentamethylheptane
State
State

It is in a liquid state at room temperature.

Melting point (Celsius)
-107.40
Melting point (Kelvin)
165.80
Boiling point (Celsius)
99.30
Boiling point (Kelvin)
372.50
General information
Molecular weight
114.22g/mol
Molar mass
114.2240g/mol
Density
0.6920g/cm3
Appearence

Isooctane is a clear, colorless liquid with a gasoline-like odor.

Comment on solubility

Solubility of 2,2,4,6,6-Pentamethylheptane

2,2,4,6,6-Pentamethylheptane, a highly branched hydrocarbon, exhibits unique solubility properties that are characteristic of aliphatic compounds.
This compound is primarily categorized as insoluble in water due to:

  • Hydrophobic Nature: The numerous methyl groups contribute to its overall hydrophobic (water-repelling) characteristics, making water solubility minimal.
  • Non-Polar Structure: Being a non-polar molecule, 2,2,4,6,6-pentamethylheptane has a limited interaction with polar solvents like water.
  • Increased Molecular Size: The larger size and branching of the molecule lead to steric hindrance, further reducing interaction with water molecules.

However, 2,2,4,6,6-pentamethylheptane demonstrates good solubility in non-polar solvents such as:

  • Hexane
  • Octane
  • Other aliphatic hydrocarbons

The general rule of thumb, "like dissolves like," applies aptly here: non-polar solvents effectively dissolve non-polar compounds, whereas polar solvents struggle to accommodate them.
Thus, when considering the solubility of 2,2,4,6,6-pentamethylheptane, it becomes evident that its hydrocarbon nature restricts its interactions with water, leading to a strong preference for non-polar solvents.

Interesting facts

Interesting Facts About 2,2,4,6,6-Pentamethylheptane

2,2,4,6,6-pentamethylheptane is a fascinating hydrocarbon that falls under the category of branched alkanes. Its unique structure and properties make it a subject of interest in both organic chemistry and industrial applications.

Unique Structural Features

This compound contains a long carbon chain adorned with multiple methyl groups, which affects its chemical behavior and physical characteristics. Some notable features include:

  • Highly branched structure: The presence of five methyl groups contributes to its overall stability and alters its reactivity compared to linear alkanes.
  • Non-polar characteristics: Being a hydrocarbon, it showcases non-polar characteristics, making it less soluble in polar solvents like water.
  • Isomerization: This compound has various structural isomers, which can lead to diverse chemical reactions and behavior.

Applications and Uses

2,2,4,6,6-pentamethylheptane holds importance in various fields:

  • Fuel additives: Its structure can improve the performance of fuels by enhancing octane ratings and reducing knocking in engines.
  • Synthetic procedures: It serves as a precursor in organic synthesis, particularly in creating more complex hydrocarbons.
  • Research studies: Due to its interesting properties, it is often studied in research to understand the effects of branching on molecular interactions.

Chemical Behavior

In terms of reactivity, 2,2,4,6,6-pentamethylheptane is relatively stable, but it can participate in various reactions:

  • Combustion: As a hydrocarbon, it combusts readily in oxygen, producing carbon dioxide and water.
  • Free radical reactions: It can undergo free radical halogenation, where it reacts with halogens under UV light to form haloalkanes.

Overall, 2,2,4,6,6-pentamethylheptane is more than just a compound; it represents a gateway to understanding the complexities of branched alkanes in both theoretical and practical chemistry!

Synonyms
2,2,4,6,6-PENTAMETHYLHEPTANE
13475-82-6
Heptane, 2,2,4,6,6-pentamethyl-
PMH cpd
A8289P68Y2
DTXSID0042034
CHEBI:77509
DTXCID8022034
236-757-0
2,2,4,6,6-pentamethyl-heptane
MFCD00026334
2,2,4,6,6-Pentamethylheptane 100 microg/mL in Acetonitrile
UNII-A8289P68Y2
Permethyl 99A
EINECS 236-757-0
C12 ISOPARAFFIN
EC 236-757-0
SCHEMBL101918
SCHEMBL134615
orb2893637
SCHEMBL4655343
SCHEMBL4655345
VKPSKYDESGTTFR-UHFFFAOYSA-
AKOS024256485
FP74954
LS-14162
NS00003896
P0047
A10885
GRANRESIN MQI-T50 COMPONENT ISODODECANE
Q27147086
InChI=1/C12H26/c1-10(8-11(2,3)4)9-12(5,6)7/h10H,8-9H2,1-7H3