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Octadecanal

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Identification
Molecular formula
C18H36O
CAS number
20459-17-2
IUPAC name
octadecanal
State
State

Octadecanal is typically found as a solid at room temperature due to its long carbon chain structure which provides sufficient van der Waals forces to maintain a solid state.

Melting point (Celsius)
43.50
Melting point (Kelvin)
316.65
Boiling point (Celsius)
333.50
Boiling point (Kelvin)
606.65
General information
Molecular weight
268.49g/mol
Molar mass
268.4860g/mol
Density
0.8325g/cm3
Appearence

Octadecanal appears as a white waxy solid. Being a fatty aldehyde, it has a characteristic aldehyde group, and it manifests in a form that is typical for long-chain aliphatic compounds. It can also appear as an oily substance.

Comment on solubility

Solubility of Octadecanal

Octadecanal, with the chemical formula C17H34O, is a straight-chain aldehyde that exhibits interesting solubility characteristics due to its large hydrophobic alkyl chain. Here’s a closer look at its solubility:

  • Solvent Interaction: Octadecanal is sparingly soluble in water, primarily due to its long non-polar carbon chain, which limits its interaction with polar solvents like water.
  • Organic Solvents: In contrast, octadecanal dissolves well in organic solvents such as:
    • Hexane
    • Ether
    • Chloroform
  • Temperature Influence: Generally, solubility of octadecanal in organic solvents may improve with increased temperature, demonstrating common behavior seen in many organic compounds.

In summary, octadecanal's solubility profile showcases its affinity for non-polar environments while highlighting the challenges it faces in polar mediums. As a result, understanding its solubility is crucial for practical applications in chemical processes and formulations.

Interesting facts

Interesting Facts about Octadecanal

Octadecanal, also known as stearylcadehyde, is a fascinating organic compound that plays an essential role in various industries and biological systems. Here are some notable aspects of this long-chain fatty aldehyde:

  • Source: Octadecanal is primarily derived from natural sources, including plant oils and animal fats. It is found in significant concentrations in the waxes of certain plants.
  • Biological Significance: In biological systems, this compound can function as a precursor to lipids and play a role in cellular signaling.
  • Applications: Octadecanal is important in the manufacturing of soaps, emulsifiers, and surfactants. Its properties make it a valuable ingredient in the cosmetics industry, particularly in lotions and creams due to its moisturizing capabilities.
  • Research Potential: Researchers are investigating the application of octadecanal in biofuel production, as its long hydrocarbon chain can be converted to biodiesel via transesterification processes.
  • Industrial Use: It is utilized in the synthesis of several chemicals, contributing to the production of various products, including pharmaceuticals and agrochemicals.

In summary, octadecanal is more than just a simple aldehyde; it is a versatile compound with implications in organic chemistry, biology, and industrial applications. As a fascinating example of a long-chain fatty aldehyde, it demonstrates the complexity and utility of organic compounds in both nature and human innovation.

Synonyms
OCTADECANAL
Stearaldehyde
Stearyl aldehyde
1-octadecanal
PH4GZ7JT4C
EINECS 211-346-9
NSC 68100
UNII-PH4GZ7JT4C
NSC-68100
CHEBI:17034
DTXSID60213250
Octadecanal (9CI)
DTXCID60135741
fwwqkrxkhirpjy-uhfffaoysa-n
638-66-4
Octadecanaldehyde
Octadecyl aldehyde
n-Octadecanal
MFCD03790007
1--Octadecanal
SCHEMBL3471
NSC68100
LMFA06000098
AKOS025212736
CS-W004307
HY-W004307
AS-56476
NS00022609
O0368
C01838
Q7076690