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4-Pentylbenzoic acid

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Identification
Molecular formula
C12H16O2
CAS number
2040-05-3
IUPAC name
4-pentylbenzoic acid
State
State

At room temperature, 4-pentylbenzoic acid is in a solid state. It has a relatively low melting point, allowing it to become liquid when heated just over 113°C.

Melting point (Celsius)
113.00
Melting point (Kelvin)
386.15
Boiling point (Celsius)
326.50
Boiling point (Kelvin)
599.60
General information
Molecular weight
206.29g/mol
Molar mass
206.2860g/mol
Density
1.0250g/cm3
Appearence

4-Pentylbenzoic acid typically appears as a white to off-white crystalline solid. It is relatively stable under normal conditions and has a characteristic odor due to the presence of the aromatic ring.

Comment on solubility

Solubility of 4-pentylbenzoic acid

4-pentylbenzoic acid, with the chemical formula C13H18O2, exhibits interesting solubility characteristics that are influenced by its molecular structure.

Generally, the solubility of organic compounds in water is determined by their polar and nonpolar functional groups. In the case of 4-pentylbenzoic acid:

  • The carboxylic acid group (-COOH) is polar and capable of forming hydrogen bonds with water, greatly enhancing its solubility.
  • However, the long pentyl chain (C5H11) introduces significant hydrophobic character, which can reduce solubility in polar solvents.

As a result, 4-pentylbenzoic acid is expected to have limited solubility in water but may dissolve better in less polar organic solvents. For instance:

  • It shows good solubility in nonpolar solvents like hexane due to its hydrophobic alkyl chain.
  • It may be moderately soluble in polar organic solvents such as ethanol or acetone due to the presence of the polar carboxylic acid group.

In summary, the solubility of 4-pentylbenzoic acid can be characterized as:

  • Very low in water
  • Moderate in organic solvents

This dual nature is common in compounds containing both hydrophilic and hydrophobic parts, making them versatile for various applications in organic chemistry.

Interesting facts

Interesting Facts about 4-pentylbenzoic Acid

4-pentylbenzoic acid is a fascinating compound within the realm of organic chemistry, showcasing a variety of intriguing attributes that highlight its significance and utility. Here are some captivating facts about this compound:

  • Structure and Composition: This compound features a benzoic acid base, which is modified by the presence of a pentyl group (-C5H11) at the para position. This structural arrangement impacts its chemical properties and behavior significantly.
  • Applications: 4-pentylbenzoic acid is often examined for its role in the synthesis of liquid crystals, which are essential in modern display technologies such as televisions and smartphones. This makes it a vital component in producing materials that enhance visual communication.
  • Biological Considerations: The compound has been studied for its potential interaction with biological systems. Its benzoic acid moiety can influence various biological activities, which warrants further exploration in pharmaceutical research.
  • Solid-State Characteristics: The molecular structure includes a long alkyl chain, which can influence the packing and arrangement of molecules in solid-state, making it interesting for materials science studies.
  • Analytical Importance: In chemical analysis, 4-pentylbenzoic acid is utilized as a reference standard for various spectroscopic techniques, aiding in the quality control of complex mixtures in industries.

As a scientist or chemistry student, the exploration of 4-pentylbenzoic acid opens a window into understanding the intersection of structure and function in organic compounds. Its unique properties challenge researchers to delve deeper into applications that could revolutionize technology and enhance our understanding of chemical interactions.

Synonyms
4-Pentylbenzoic acid
Benzoic acid, 4-pentyl-
4-n-Pentylbenzoic acid
4-Amylbenzoic acid
p-Pentylbenzoic acid
p-Amylbenzoic acid
Para-Pentylbenzoic acid
BENZOIC ACID, p-PENTYL-
p-n-pentylbenzoic acid
NSC 169024
ET3KL92DDG
EINECS 247-607-9
BRN 2044798
p-n-Amylbenzoic acid
UNII-ET3KL92DDG
NSC-169024
DTXSID6067200
3-09-00-02551 (Beilstein Handbook Reference)
pAmylbenzoic acid
4Amylbenzoic acid
pPentylbenzoic acid
4nPentylbenzoic acid
Benzoic acid, ppentyl
ParaPentylbenzoic acid
Benzoic acid, 4pentyl
4(nPentyl)benzoic acid
RefChem:100308
DTXCID6037489
247-607-9
CWYNKKGQJYAHQG-UHFFFAOYSA-N
26311-45-5
MFCD00002572
4-(n-pentyl)benzoic acid
4-pentyl benzoic acid
4-pentyl-benzoic acid
4-Pentylbenzoic acid, 99%
SCHEMBL290118
SCHEMBL2288154
SCHEMBL8759256
SCHEMBL9670352
NSC169024
SBB007808
AKOS002685614
CS-W010704
PS-8327
AC-18364
SY036128
A0741
NS00021085
ST50406501
H10741
F065718