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Stearamide

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Identification
Molecular formula
C18H37NO
CAS number
124-26-5
IUPAC name
octadecanamide
State
State

At room temperature, stearamide is typically a solid. It can exist in a crystalline or waxy state, and it does not readily dissolve in water.

Melting point (Celsius)
110.00
Melting point (Kelvin)
383.20
Boiling point (Celsius)
342.50
Boiling point (Kelvin)
615.70
General information
Molecular weight
269.49g/mol
Molar mass
269.4930g/mol
Density
0.9866g/cm3
Appearence

Stearamide typically appears as a white to off-white crystalline solid or waxy powder. It is generally waxy in texture and can be greasy to the touch. The compound may vary slightly in appearance depending on its specific formulation or any impurities present.

Comment on solubility

Solubility of Octadecanamide

Octadecanamide, with the chemical formula C18H37NO, is a long-chain fatty amide that exhibits interesting solubility characteristics:

  • Soluble in Organic Solvents: Octadecanamide is primarily soluble in nonpolar and polar aprotic solvents such as chloroform, benzene, and dimethyl sulfoxide (DMSO). This is attributed to its hydrophobic hydrocarbon chain.
  • Slight Solubility in Water: Despite being a polar compound due to the amide functional group, octadecanamide shows very limited solubility in water. This is due to the dominance of its long hydrophobic tail, which creates significant hydrophobic interactions.
  • Temperature Dependence: Like many organic compounds, the solubility of octadecanamide can increase with temperature. Higher temperatures often promote better miscibility with organic solvents.
  • Applications: Its low solubility in water makes it useful in formulations that require stability in non-aqueous environments, such as in the production of surfactants and lubricants.

In summary, octadecanamide's solubility profile highlights the influence of its molecular structure on solubility behavior. As such, it can be characterized as:

  • Highly soluble in suitable organic solvents.
  • Practically insoluble in water.

Understanding the solubility of octadecanamide is essential for its effective application in various chemical processes and formulations.

Interesting facts

Interesting Facts about Octadecanamide

Octadecanamide, also known as stearamide, is an intriguing long-chain fatty acid amide that plays a versatile role in various industrial and scientific applications. This compound features an 18-carbon straight-chain alkane, making it notable for its biological significance as well as its utility in materials science.

Key Features:

  • Biological Significance: Octadecanamide is involved in various biochemical processes, functioning as a signaling molecule and influencing the behavior of certain biological systems.
  • Industrial Uses: It is commonly utilized in the production of lubricants, surfactants, and plastic additives, highlighting its importance in enhancing material properties.
  • Cosmetic Applications: Due to its emollient properties, octadecanamide is often found in cosmetic formulations, contributing to skin-conditioning benefits.
  • Research Interest: Scientists are exploring its potential in drug delivery systems, as its structural characteristics may allow for improved absorption of therapeutic agents.

One fascinating aspect of octadecanamide is its ability to form hydrogen bonds in certain environments. This property not only affects its physical characteristics but also opens avenues for further research into its interactions with other compounds. In the words of chemist Sir Derek Barton, “In chemistry, the mirror image is more important than the picture itself” — a sentiment that could easily apply to the study of octadecanamide’s stereochemistry and its various isomers.

In summary, octadecanamide is not just another simple amide; it stands at the crossroads of biology, industry, and chemistry, making it a compelling subject for continued exploration and application.

Synonyms
Octadecanamide
Stearamide
124-26-5
STEARIC ACID AMIDE
Octadecamide
Octadecylamide
Stearoylamide
Stearoylamine
Stearylamide
Stearic amide
Kemamide S
Adogen 42
NSC 66462
CCRIS 6866
HSDB 723
CHEBI:34900
EINECS 204-693-2
YQX129FH1U
BRN 0909006
ORISTAR STA
AI3-10003
NSC-66462
DTXSID9027025
EC 204-693-2
STEARIC ACID AMIDE [HSDB]
STEARAMIDE (STEARIC ACID AMIDE)
204-693-2
RefChem:889144
STEARAMIDE [INCI]
DTXCID307025
Crodamide S
Petrac vyn-eze
Amide T
MFCD00008038
Amide C18
Armid 18
Octadecanoic acid amide
UNII-YQX129FH1U
Stearamide; Stearlyamide; Stearic Acid Amide; Octadecylamide
Crodamide SR
Crodamide S, SR
Amide C-18
SCHEMBL27869
CHEMBL88311
SCHEMBL502184
orb1909185
NSC66462
BDBM50463974
LMFA08010003
SBB061048
STL453616
AKOS015843174
Octadecanamide, technical grade, 85%
FS62597
HY-W130610
NCGC00164016-01
BS-42312
SY051725
CS-0196615
NS00003249
ST51047121
EN300-83818
E82323
F633556
Q27116315
Z1245693822
Fatty acid amide pound Contains C16, C18 amides pound(c)