Skip to main content

Stearyltrimethylammonium

ADVERTISEMENT
Identification
Molecular formula
C21H46N
CAS number
112-03-8
IUPAC name
trimethyl(octadecyl)ammonium
State
State

At room temperature, stearyltrimethylammonium is typically a solid, existing often as a waxy compound.

Melting point (Celsius)
45.50
Melting point (Kelvin)
318.70
Boiling point (Celsius)
348.00
Boiling point (Kelvin)
621.00
General information
Molecular weight
339.67g/mol
Molar mass
339.6700g/mol
Density
0.8700g/cm3
Appearence

Stearyltrimethylammonium is a colorless to pale yellow waxy solid at room temperature. It often appears in a solid wax-like form that can be slightly oily. Due to its molecular structure, it is used in various industrial applications and personal care products such as hair conditioners.

Comment on solubility

Solubility of Trimethyl(octadecyl)ammonium

Trimethyl(octadecyl)ammonium, often used in various applications such as surfactants and phase transfer catalysts, exhibits interesting solubility characteristics. Due to its long hydrophobic carbon chain and positively charged ammonium group, the solubility profile of this compound can be summarized as follows:

  • Hydrophobic Interaction: The presence of the octadecyl chain makes the compound largely hydrophobic, which increases its solubility in organic solvents.
  • Limited Aqueous Solubility: In general, trimethyl(octadecyl)ammonium is poorly soluble in water due to its long hydrocarbon tail that resists interaction with polar solvents.
  • Influence of Temperature: The solubility can vary with temperature; usually, higher temperatures increase solubility in organic solvents.
  • Effect of Counterions: The solubility can also be influenced by the presence of different anions that may interact with the ammonium group.

Given its amphiphilic nature, trimethyl(octadecyl)ammonium may also form micelles in solution under appropriate conditions, which can enhance its solubility in specific environments. Overall, it's crucial to consider both the solvent environment and external conditions when assessing the solubility of this compound.

Interesting facts

Interesting Facts about Trimethyl(octadecyl)ammonium

Trimethyl(octadecyl)ammonium, a fascinating quaternary ammonium compound, is widely studied and applied in various fields due to its unique properties. Here are some interesting aspects of this compound:

  • Quaternary Ammonium Compound: As a quaternary ammonium salt, it features a nitrogen atom bonded to four organic groups, contributing to its distinct chemical behavior and utility in applications.
  • Surface-Active Agent: This compound acts as a surfactant, which means it can significantly lower the surface tension of liquids. This property makes it valuable in the formulation of detergents and emulsifiers.
  • Antimicrobial Properties: Trimethyl(octadecyl)ammonium is well-known for its effectiveness in microbial inhibition. It is often used in sanitizing agents due to its ability to disrupt microbial membranes.
  • Application in Water Treatment: This compound has found a prominent role in water purification processes, primarily as an algaecide and biocide due to its effectiveness against a variety of aquatic organisms.
  • Cosmetic Use: Its cationic nature allows it to condition and smooth hair, making it a common ingredient in many hair care products. It provides benefits such as improved manageability and reduced static.

Interestingly, this compound also serves as a reagent in organic synthesis, demonstrating versatility across multiple domains of chemistry. In the words of a renowned chemist, “The more we understand about compounds like trimethyl(octadecyl)ammonium, the more we can manipulate them to benefit society.” This showcases the importance of such compounds beyond their basic chemistry, highlighting their role in improving everyday products and processes.

In summary, trimethyl(octadecyl)ammonium stands as a prime example of how a simple chemical compound can have profound implications in various industries, from cleaning to pharmaceuticals.

Synonyms
Stearyltrimethylammonium
Stma-C
15461-40-2
DJ0M4HZY00
UNII-DJ0M4HZY00
DTXSID8048078
N,N,N-Trimethyloctadecan-1-aminium
1-Octadecanaminium, N,N,N-trimethyl-
CHEMBL109458
SCHEMBL48999
CHEMBL1179998
DTXCID9028049
stearyltrimethylammonium monomesylate
BDBM50147563
Trimethyl-octadecyl-ammonium; bromide
NCGC00248615-01
NS00005124
Alkyl trimethyl ammonium compound C18 (ATMAC C18)