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Cetylpyridinium bromide

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Identification
Molecular formula
C21H38BrN
CAS number
123-03-5
IUPAC name
1-hexadecylpyridin-1-ium;bromide
State
State

At room temperature, cetylpyridinium bromide is a solid, typically available in powder form.

Melting point (Celsius)
77.00
Melting point (Kelvin)
350.15
Boiling point (Celsius)
325.00
Boiling point (Kelvin)
598.15
General information
Molecular weight
448.52g/mol
Molar mass
448.5220g/mol
Density
1.0675g/cm3
Appearence

Cetylpyridinium bromide appears as a white or almost white crystalline powder. It is often used in solutions and aqueous systems where it is clear and colorless.

Comment on solubility

Solubility of 1-Hexadecylpyridin-1-ium Bromide

The compound 1-Hexadecylpyridin-1-ium bromide, with the chemical formula C17H36BrN, exhibits distinct solubility characteristics worth noting:

  • Solvent Compatibility: This compound is known to dissolve readily in polar organic solvents such as ethanol and methanol due to the presence of the pyridinium ion, which increases its polarity.
  • Water Solubility: Despite the long hydrophobic hexadecyl chain, the ionic nature of the +N and -Br contributes to its limited solubility in water. This is typical for many quaternary ammonium compounds.
  • Temperature Effects: Solubility may increase with temperature, making it more viable in specific applications when heated.
  • Phase Behavior: It forms a series of liquid crystals at certain concentrations, indicating that the solubility profile is also influenced by concentration and temperature.

In summary, while 1-Hexadecylpyridin-1-ium bromide can exhibit moderate solubility in polar solvents and limited water solubility, it’s vital to consider its unique structure and how it interacts with different solvents to optimize its use in various chemical applications.


Interesting facts

Interesting Facts about 1-Hexadecylpyridin-1-ium Bromide

1-Hexadecylpyridin-1-ium bromide, often abbreviated as HDPB, is an intriguing compound that exemplifies the intersection of organic chemistry and materials science. This compound is characterized by its long hydrophobic alkyl chain and positively charged pyridinium ring, which significantly influences its properties and applications.

Key Features

  • Surfactant Properties: Due to its amphiphilic nature, 1-hexadecylpyridin-1-ium bromide exhibits excellent surfactant properties, making it suitable for use in emulsions and foams.
  • Biocidal Activity: This compound has been studied for its potential biocidal activity, especially against various microorganisms, making it useful in disinfectants and antimicrobial treatments.
  • Adhesion and Coating Applications: The unique structure of HDPB allows it to interact with various substrates, enhancing adhesion properties in coatings and paints.
  • Electrochemical Applications: Researchers have explored its use in electrochemistry, where it may serve as an electrolyte in certain types of batteries or fuel cells.

The presence of the long hydrophobic chain allows for the compound to interact favorably with lipid bilayers, making it valuable in pharmaceutical formulations. As famously noted by chemist Robert Hooke, "Things that are complex can often have simple explanations," and HDPB serves as a prime example of how a simple molecular structure can lead to diverse and complex applications.

Research and Development

Ongoing studies are investigating the environmental impact and toxicity of 1-hexadecylpyridin-1-ium bromide, ensuring that while we harness its beneficial properties, we also consider its safety and sustainability. The balance of its efficacy against microorganisms, alongside its environmental footprint, is a critical area of interest for scientists working with this compound.

In summary, 1-hexadecylpyridin-1-ium bromide is not just another chemical compound; it embodies a range of functionalities that make it a valuable asset in both industrial and research contexts.

Synonyms
CETYLPYRIDINIUM BROMIDE
140-72-7
Hexadecylpyridinium bromide
1-Hexadecylpyridinium bromide
Cetapharm
Hexadecylpyridine bromide
1-hexadecylpyridin-1-ium bromide
Nitrogenol
Sterogenal
Sterogenol
Bromocet
Cetasol
Cetazol
Cetazolin
Seprisan
Hexadecylpyridiniumbromide
Acetoquat CPB
Fixanol C
Morpan CBP
Cetyl pyridinium bromide
N-Hexadecylpyridinium bromide
Cetylpyridine bromide
N-Cetylpyridinium bromide
1-Cetylpyridinium bromide
Pyridinium, 1-hexadecyl-, bromide
TsPB
Caswell No. 166
Hexadecyl pyridinium bromide
Pyridinium, 1-hexadecyl-, bromide (1:1)
HSDB 6859
UNII-O77BKZ14DE
NSC 8495
EINECS 205-428-3
O77BKZ14DE
EPA Pesticide Chemical Code 069118
DTXSID3033307
CHEBI:77052
1-hexadecylpyridin-1-ium;bromide
NSC-8495
MFCD00011988
1-Hexadecyl-Pyridinium Bromide
DTXCID1013307
CETYLPYRIDINIUM BROMIDE [HSDB]
CETYLPYRIDINIUM BROMIDE [WHO-DD]
NCGC00091023-01
MLS002695907
CPyBr cpd
CAS-140-72-7
SMR001398783
(1-Hexadecyl)pyridinium bromide monohydrate
cetylpyridiniumbromide
cetyl pyridium bromide
NCetylpyridinium bromide
1Cetylpyridinium bromide
1Hexadecylpyridinium bromide
NHexadecylpyridinium bromide
Pesticide Code: 069118
Hexadecylpyridinium (bromide)
SCHEMBL151799
CHEMBL334255
Pyridinium, 1hexadecyl, bromide
NSC8495
HMS3087C22
Tox21_111061
Tox21_201549
Tox21_303438
hexadecylpyridinium bromide monohydrate
AKOS005080912
Tox21_111061_1
CS-W011754
FH37372
Hexadecylpyridinium bromide, >=97.0%
HY-W011038
(1-Hexadecyl)pyridinium bromide hydrate
NCGC00091023-06
NCGC00257401-01
NCGC00259098-01
DB-050403
H0162
NS00079614
F11209
12N-193
Q27146586
205-428-3