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Hexadecyltrimethylammonium bromide

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Identification
Molecular formula
C19H42BrN
CAS number
57-09-0
IUPAC name
icosyl(trimethyl)ammonium;bromide
State
State

Hexadecyltrimethylammonium bromide is a solid at room temperature. It is typically found as a fine white crystalline powder.

Melting point (Celsius)
248.00
Melting point (Kelvin)
521.15
Boiling point (Celsius)
315.00
Boiling point (Kelvin)
588.15
General information
Molecular weight
364.45g/mol
Molar mass
364.4500g/mol
Density
1.0000g/cm3
Appearence

Hexadecyltrimethylammonium bromide, commonly referred to as CTAB, appears as a white powder or crystals. It is hygroscopic and may absorb moisture from the air. The compound is known to form a colorless solution in water.

Comment on solubility

Solubility of Icosyl(trimethyl)ammonium Bromide

Icosyl(trimethyl)ammonium bromide, with its distinctive long-chain structure, presents interesting solubility characteristics. This compound is a type of quaternary ammonium salt, which often displays unique interactions with solvents due to its hydrophobic and hydrophilic regions.

Solubility Characteristics

The solubility of icosyl(trimethyl)ammonium bromide can be summarized as follows:

  • Hydrophobic Tail: The long icosyl chain tends to be hydrophobic, resulting in low solubility in polar solvents like water.
  • Hydrophilic Head: The trimethylammonium ion provides a positively charged, hydrophilic region that can interact favorably with polar solvents.
  • Solubility in Nonpolar Solvents: This compound is typically more soluble in organic solvents such as ethanol or dichloromethane due to the compatibility of the hydrophobic chain with nonpolar environments.

In general, solubility can often be summarized by the principle of "like dissolves like," meaning that polar solvents will dissolve polar compounds better, while nonpolar solvents will favor nonpolar compounds.

Key Consideration: When working with icosyl(trimethyl)ammonium bromide, one should always consider its solubility in relation to the solvent being used, as it can greatly affect reactivity and interaction with other substances.

Interesting facts

Interesting Facts about Icosyl(trimethyl)ammonium Bromide

Icosyl(trimethyl)ammonium bromide is a fascinating compound that falls under the category of quaternary ammonium salts. These types of compounds are notable for their ability to act as surfactants and emulsifiers, which play vital roles in various industrial applications.

Chemical Structure and Functionality

This compound is characterized by a long hydrocarbon chain, which consists of twenty carbon atoms. This length gives it unique properties including:

  • Amphiphilicity: With a hydrophilic quaternary ammonium head and a hydrophobic tail, it is effective in lowering surface tension.
  • Biocompatibility: Its structure may render it suitable for use in biomedical applications due to its compatibility with biological systems.
  • Charge Interaction: The positive charge on the nitrogen atom interacts well with negatively charged species, giving it an edge in formulation stability.

Applications

Icosyl(trimethyl)ammonium bromide finds its versatility in several sectors:

  • Personal Care Products: Used in shampoos and conditioners for its conditioning and antimicrobial properties.
  • Pharmaceuticals: Serves as a stabilizer in drug formulations.
  • Industrial Formulations: Acts as a dispersant in paints and coatings, enhancing consistency and performance.

Environmental Impact and Safety

Given the surfactant properties, it is essential to consider the environmental impacts:

  • Eco-toxicity: Studies suggest that quaternary ammonium compounds may have varying toxicity to aquatic life, highlighting the need for responsible use.
  • Biodegradability: Research is ongoing on the degradation pathways of such compounds to ensure they do not persist in ecosystems.

As a student of chemistry, understanding icosyl(trimethyl)ammonium bromide opens the door to a plethora of research opportunities in the fields of materials science, nanotechnology, and environmental chemistry. It's a compound that encapsulates the intersection of chemistry with everyday life!

Synonyms
7342-61-2
Eicosyltrimethylammonium bromide
icosyl(trimethyl)azanium;bromide
Eicanosyltrimethylammonium bromide
N,N,N-Trimethylicosan-1-aminium bromide
Eicosyl(trimethyl)azanium Bromide
AMMONIUM, EICOSYLTRIMETHYL-, BROMIDE
1-Eicosanaminium, N,N,N-trimethyl-, bromide
trimethylicosylammonium bromide
SCHEMBL8894468
DTXSID70994144