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4-Octylbenzoic acid

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Identification
Molecular formula
C15H22O2
CAS number
3575-31-3
IUPAC name
4-octylbenzoic acid
State
State

At room temperature, 4-octylbenzoic acid is typically found as a solid due to its relatively high melting point. The compound's long hydrocarbon chain contributes to its solid state under standard conditions.

Melting point (Celsius)
88.00
Melting point (Kelvin)
361.00
Boiling point (Celsius)
348.00
Boiling point (Kelvin)
621.00
General information
Molecular weight
234.34g/mol
Molar mass
234.3440g/mol
Density
0.9870g/cm3
Appearence

4-Octylbenzoic acid appears as a white to off-white crystalline powder. It is typically solid at room temperature and is known for its hydrophobic nature due to the long octyl chain attached to the aromatic ring.

Comment on solubility

Solubility of 4-octylbenzoic acid

4-octylbenzoic acid, with its hydrophobic octyl tail, displays unique solubility characteristics that lend it interesting properties in various applications. It is important to note that solubility can be influenced by several factors, including:

  • Polarity: The presence of the carboxylic acid group (-COOH) imparts some degree of polarity, allowing for potential interactions with polar solvents like water.
  • Hydrophobicity: The long hydrophobic octyl chain tends to limit the solubility in polar solvents, particularly in water.
  • Temperature: Generally, increasing temperature can enhance solubility for many compounds, and 4-octylbenzoic acid may follow this trend.

Due to these opposing influences, 4-octylbenzoic acid is primarily soluble in non-polar solvents such as hexane and toluene, while its solubility in water is quite limited. This characteristic makes it particularly useful in organic synthesis and as a phase change material in certain chemical processes.


Overall, its solubility profile illustrates the balance between hydrophilic and hydrophobic elements, emphasizing the complexity of solute behavior in varying environments.

Interesting facts

Interesting Facts about 4-Octylbenzoic Acid

4-Octylbenzoic acid is an intriguing compound with a range of fascinating characteristics that make it a subject of interest for both chemists and industry professionals. This aromatic carboxylic acid features a long hydrocarbon chain, which contributes to its unique properties and potential applications.

Structure and Properties

  • Aromaticity: The presence of the benzene ring lends 4-octylbenzoic acid its aromatic properties, making it useful in a variety of chemical reactions.
  • Chain Length: The octyl group (an eight-carbon alkyl chain) significantly influences the compound's physical properties, including its melting and boiling behaviors, thus impacting its application in materials science.
  • Acidic Nature: As a carboxylic acid, it can donate protons, which can be pivotal in various biochemical reactions and synthetic processes.

Applications

4-Octylbenzoic acid has notable applications in several fields:

  • Liquid Crystals: It is commonly used as a component in liquid crystal displays (LCDs), where its structural properties help manipulate light and improve display quality.
  • Polymer Production: The compound serves as an intermediate in the synthesis of polyamides and polyesters, adding functional properties to these materials.
  • Research Tool: It can be employed in studies exploring molecular interactions, particularly in understanding how substituents affect the behavior of aromatic compounds.

Environmental and Safety Considerations

When handling 4-octylbenzoic acid, safety precautions should always be taken as with any chemical:

  • Safe Handling: Utilize personal protective equipment, including gloves and goggles, when working with this compound.
  • Environmental Awareness: Be aware of disposal regulations as substances like 4-octylbenzoic acid can impact aquatic life if released into water systems.

In conclusion, 4-octylbenzoic acid is not merely a compound but a versatile player in the chemistry domain with significant relevance in technology and research. Understanding its properties opens the door to numerous innovative uses and applications in various scientific disciplines!

Synonyms
4-Octylbenzoic acid
Benzoic acid, 4-octyl-
p-Octylbenzoic acid
EINECS 222-692-5
p-n-Octyl benzoic acid
PWH5I1J38K
NSC 173066
BRN 1954607
UNII-PWH5I1J38K
NSC-173066
DTXSID4063088
4-09-00-01962 (Beilstein Handbook Reference)
DTXCID8039085
222-692-5
zqldnjkhlqojge-uhfffaoysa-n
3575-31-3
4-n-Octylbenzoic acid
Para-octylbenzoic acid
BENZOIC ACID, p-OCTYL-
4-Octylbenzoicacid
MFCD00042649
p-octyl benzoic acid
p-n-octylbenzoic acid
Maybridge1_001984
4-octylbenzoic acid (en)
4-Octylbenzoic acid, 99%
SCHEMBL503611
CHEMBL3273770
HMS547C04
CCG-41619
NSC173066
AKOS004908305
AS-9143
CS-W010336
NS00029911
O0137
D91814
EN300-1588378
SR-01000631680-1
Z1695772825
4-Octylbenzoic acid, puriss., liquid crystal, >=99.0% (T)