Skip to main content

Quinoline; sulfuric acid

ADVERTISEMENT
Identification
Molecular formula
C18H17NO6S
CAS number
8004-63-7
IUPAC name
quinoline;sulfuric acid
State
State

At room temperature, quinoline is typically found in its liquid state, while sulfuric acid, due to its hygroscopic nature, is also a liquid that can be quite viscous.

Melting point (Celsius)
-15.00
Melting point (Kelvin)
258.20
Boiling point (Celsius)
239.50
Boiling point (Kelvin)
512.60
General information
Molecular weight
353.44g/mol
Molar mass
353.4400g/mol
Density
1.3480g/cm3
Appearence

Quinoline is a colorless hygroscopic liquid, though it can appear yellowish if slightly impure. It has a strong, unpleasant odor typical of pyridine compounds. Sulfuric acid appears as a colorless to slightly yellow viscous liquid, and is often referred to as oil of vitriol due to its oily appearance.

Comment on solubility

Solubility of Quinoline in Sulfuric Acid

The solubility of quinoline in sulfuric acid is quite notable and can be discussed in several key aspects:

  • Polar Nature: Quinoline, being a nitrogen-containing heterocycle, exhibits polar characteristics that enhance its solubility in polar solvents such as sulfuric acid.
  • Acidity of Sulfuric Acid: Sulfuric acid is a strong acid, which means it can protonate the quinoline molecule, increasing its solubility due to ion-dipole interactions.
  • Concentration Effects: The solubility may vary with different concentrations of sulfuric acid. As the acid concentration increases, the solubility of quinoline tends to increase significantly.
  • Hydrogen Bonding: The interaction between the nitrogen atom in quinoline and the acidic protons can lead to enhanced solubility through hydrogen bonding.

Because of these interactions, it is observed that quinoline is soluble in concentrated sulfuric acid, making it easier to work with in various chemical reactions and preparations involving this unique heterocyclic compound.

In summary, the key factors contributing to the solubility of quinoline in sulfuric acid include:

  1. Polar nature of both compounds
  2. Protonation by sulfuric acid
  3. Increased solubility at higher acid concentrations
  4. Hydrogen bonding capabilities

These properties make quinoline an interesting compound in the context of solubility in sulfuric acid, showcasing the interplay between molecular structure and solvent interactions.

Interesting facts

Interesting Facts about Quinoline Sulfuric Acid

Quinoline sulfuric acid is an intriguing chemical compound with significant importance in both chemistry and industry. Here are some fascinating aspects to consider:

  • Historical Significance: Quinoline was first isolated in the late 19th century and has been extensively studied for its properties and applications in various fields.
  • Properties: This compound exhibits unique reactivity, making it valuable for synthetic applications. It is often used in the synthesis of various alkaloids and pharmaceuticals.
  • Role as a Catalyst: Quinoline sulfuric acid can act as a catalyst in multiple organic reactions, enhancing reaction rates and improving yields.
  • Applications: Beyond its role in organic synthesis, it is also utilized in the production of dyes, agrochemicals, and fragrances, highlighting its versatility in diverse industries.
  • Environmental Impact: Quinoline itself and its derivatives can have environmental implications, leading to research into safer and more sustainable alternatives.

As a chemist or a student, it's essential to understand both the utility and the responsibilities that come with using such compounds. The balance between innovation and safety remains a cornerstone of chemical research.

In summary, quinoline sulfuric acid is not just a compound; it's a bridge between history, industry, and the future possibilities of chemistry. Its diverse applications and the ongoing research surrounding it make it a compound of particular interest.

Synonyms
Quinoline Sulphate
QUINOLINE SULFATE
54957-90-3
Quinoline bisulfate
Quinoline, sulfate
Quinoline sulfate (1:1)
41949-04-6
quinoline;sulfuric acid
EINECS 208-492-0
Chinolinsulfat
sulfuric acid quinoline
CINCH; SULFURIC ACID
SCHEMBL21535
MFCD00054376
AKOS015856624
AS-75714
SY317268
DB-335471
CS-0155977
530-66-5(bisulfate); 41949-04-6
D95732