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Cetyltrimethylammonium

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Identification
Molecular formula
C19H42N+
CAS number
112-02-7
IUPAC name
icosyl(trimethyl)ammonium
State
State

At room temperature, cetyltrimethylammonium is typically in a solid state, particularly as a chloride salt (CTAC), where it appears as a fine, waxy, white powder. In water, it can dissolve to form a liquid state which retains a clear, viscous nature.

Melting point (Celsius)
232.00
Melting point (Kelvin)
505.15
Boiling point (Celsius)
114.00
Boiling point (Kelvin)
387.15
General information
Molecular weight
327.65g/mol
Molar mass
327.0000g/mol
Density
0.9680g/cm3
Appearence

Cetyltrimethylammonium, commonly referred to as CTAC (cetyltrimethylammonium chloride) in salt form, appears as a white crystalline solid. It can also be found as a colorless liquid when it is in its aqueous solution form. The compound is characterized by a waxy or greasy texture and is often sticky to touch. When incorporated into solutions, it contributes a foamy property, being commonly used in surfactants.

Comment on solubility

Solubility of Icosyl(trimethyl)ammonium

Icosyl(trimethyl)ammonium, with its structure dominated by a long hydrocarbon chain, exhibits unique solubility properties that make it an interesting compound in various applications.

The solubility of such ammonium salts can often be influenced by several key factors:

  • Hydrophilicity vs. Hydrophobicity: The long hydrocarbon chain gives this compound a significant hydrophobic character, while the trimethylammonium group imparts some hydrophilic properties.
  • Degree of Ionization: In polar solvents like water, the ionic nature of the ammonium group contributes to the solubility; however, the dominance of the hydrophobic chain can limit overall solubility.
  • Concentration of Solvent: Increased concentrations may lead to saturation, affecting the solubility limit.
  • Temperature Effects: Generally, as temperature increases, solubility in polar solvents can improve due to enhanced molecular motion.

Overall, icosyl(trimethyl)ammonium demonstrates moderate solubility in polar solvents, particularly when affected by environmental conditions. Its unique balance of hydrophilic and hydrophobic properties often categorizes it within the realm of surfactants, highlighting its potential utility in applications such as emulsification and stabilization.

In summary, while it may not be highly soluble, a careful consideration of the above factors can aid in predicting solubility behavior in various environments.

Interesting facts

Interesting Facts about Icosyl(trimethyl)ammonium

Icosyl(trimethyl)ammonium is a fascinating compound that belongs to the family of quaternary ammonium salts. These compounds are well-known for their diverse applications across various fields due to their unique properties. Here are some intriguing details about this particular compound:

  • Structure and Function: The structure of icosyl(trimethyl)ammonium includes a long hydrocarbon chain, which contributes to its amphiphilic nature. This means it can interact with both polar and non-polar substances, making it useful in numerous applications.
  • Surface Activity: Due to its surface-active properties, icosyl(trimethyl)ammonium is used in formulations as a surfactant, aiding in the stabilization of emulsions and foams.
  • Antimicrobial Properties: Like many quaternary ammonium compounds, it exhibits antimicrobial qualities. It can be beneficial in antiseptic formulations and disinfectants, helping to inhibit the growth of bacteria and fungi.
  • Industrial Applications: Its unique properties make it valuable in industries such as cosmetics, pharmaceuticals, and food processing, where it can be utilized in products such as hair conditioners, skin creams, or food preservatives.
  • Research Significance: As a subject of ongoing research, scientists are continuously exploring the potential for icosyl(trimethyl)ammonium in drug delivery systems and nanotechnology due to its effectiveness in forming liposomes and micelles.

As noted by researchers in the field, "the versatility of quaternary ammonium compounds has turned them into essential components in many modern applications." This highlights the importance of compounds like icosyl(trimethyl)ammonium in both scientific research and practical usage.

With a combination of functionalization possibilities and the ability to form stable mixtures, icosyl(trimethyl)ammonium stands as an exemplary representative of the quaternary ammonium salts and their diverse roles in today’s chemical landscape.

Synonyms
23043-81-4
Icosyltrimethylaminium
SCHEMBL332259
N,N,N-Trimethyl-1-eicosanaminium
DTXSID001334123