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Octadecane

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Identification
Molecular formula
C18H38
CAS number
593-45-3
IUPAC name
octadecane
State
State
At room temperature, octadecane is typically in the form of a solid with a waxy consistency. It becomes liquid above its melting point.
Melting point (Celsius)
28.20
Melting point (Kelvin)
301.40
Boiling point (Celsius)
317.60
Boiling point (Kelvin)
590.80
General information
Molecular weight
254.49g/mol
Molar mass
254.4940g/mol
Density
0.7773g/cm3
Appearence

Octadecane is a colorless substance that appears as waxy crystals or a white, waxy solid. It is part of the alkane series and is generally described as having a characteristic paraffin-like odor.

Comment on solubility

Solubility of Octadecane

Octadecane, with the chemical formula C18H38, is a saturated hydrocarbon belonging to the class of alkanes. When discussing its solubility, several key points should be noted:

  • Nonpolar Nature: Octadecane is a nonpolar molecule, which greatly influences its solubility behavior.
  • Solvent Compatibility: It shows poor solubility in polar solvents, such as water, due to the lack of hydrogen bonding interactions.
  • High Solubility in Nonpolar Solvents: Conversely, octadecane readily dissolves in nonpolar organic solvents like hexane, benzene, and toluene.
  • Practical Implications: This solubility characteristic highlights its utility in various applications, particularly in organic synthesis and as a solvent in laboratory settings.

In summary, octadecane is largely insoluble in polar environments while exhibiting excellent solubility in nonpolar media. Understanding these solubility properties is crucial for effectively utilizing this compound in both academic and industrial contexts.

Interesting facts

Interesting Facts about Octadecane

Octadecane is a fascinating compound notable for its unique properties and applications. It belongs to the family of straight-chain alkanes and is composed of eighteen carbon atoms, making it a significant molecule in both natural and industrial contexts.

Key Highlights

  • Natural Occurrence: Octadecane is commonly found in various natural fats and waxes, contributing to the structural integrity of living organisms.
  • Energy Source: As a hydrocarbon, octadecane is an important constituent in the production of fuels. It is often studied for its potential use in energy storage systems.
  • Phase Change Materials: Due to its phase-changing abilities, octadecane is being researched for thermal energy storage applications. Its ability to absorb and release heat makes it ideal for enhancing energy efficiency in buildings.
  • Research Applications: In the field of chemistry, octadecane serves as a model compound for studying various phenomena, including combustion processes and molecular interactions.

Notably, scientists have observed that:

  1. Octadecane exhibits a relatively high energy density, making it a subject of interest in the context of alternative energy resources.
  2. This compound can influence molecular interactions in surfactants and emulsifiers, further enhancing its relevance in chemical engineering.

Overall, octadecane embodies a remarkable blend of simplicity and utility. As quote from a prominent chemist puts it, "The elegance of alkanes lies in their straightforward structure and versatile applications."

With ongoing research and exploration, octadecane continues to play a pivotal role in various fields, from energy solutions to materials science.

Synonyms
OCTADECANE
n-Octadecane
593-45-3
Oktadekan
UNII-N102P6HAIU
N102P6HAIU
CCRIS 681
NSC 4201
NSC-4201
EINECS 209-790-3
AI3-06523
DTXSID9047172
CHEBI:32926
HSDB 8348
EC 209-790-3
CACTUS NORMAL PARAFFIN TS 8
CH3-(CH2)16-CH3
CH3-[CH2]16-CH3
DTXCID7027172
209-790-3
Octadecan
1-(4-Chlorophenyl)-1,3-dihydro-2H-indol-2-one
TS Paraffin TS 8
MFCD00009007
128271-18-1
Octadecane, 99%
Octadecane, analytical standard
Octadecane, n-
NSC4201
HY-N6600
LMFA11000581
AKOS015903064
Octadecane, purum, >=97.0% (GC)
AS-56224
DA-66163
CS-0034329
NS00010781
O0003
Q150900
379E5588-B955-4C35-88E0-21E7DF38DE0E
InChI=1/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H