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Aniline

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Identification
Molecular formula
C6H7N
CAS number
62-53-3
IUPAC name
aniline;sulfuric acid
State
State
At room temperature, aniline is a liquid.
Melting point (Celsius)
-6.30
Melting point (Kelvin)
266.85
Boiling point (Celsius)
184.13
Boiling point (Kelvin)
457.28
General information
Molecular weight
93.13g/mol
Molar mass
93.1290g/mol
Density
1.0217g/cm3
Appearence
Aniline appears as a clear to slightly yellow liquid with a characteristic amine-like odor. On prolonged storage, it may darken to a reddish-brown color due to oxidation.
Comment on solubility

Solubility of Aniline in Sulfuric Acid

The solubility of aniline in sulfuric acid presents a fascinating interaction of organic compounds with strong acids. Aniline (C6H7N), a primary aromatic amine, demonstrates significant solubility in concentrated sulfuric acid due to the formation of stable salt complexes.

Key Points about the Solubility:

  • High Solubility: Aniline is highly soluble in sulfuric acid, resulting in the formation of anilinium sulfate (C6H7NH+HSO4-).
  • Temperature Dependence: As with many compounds, solubility may improve with an increase in temperature, although care must be taken due to the exothermic nature of the reaction.
  • Hydrogen Bonding: The polar N-H bond in aniline facilitates interactions with the sulfuric acid, enhancing solubility.

In practical terms, this means that in acidic environments, such as when dissolved in sulfuric acid, aniline behaves quite differently than in neutral or basic mediums. For instance, quote: "In strong acidic solutions, the basic nature of aniline enables it to effectively accept protons, forming a positively charged species." This highlights the importance of considering solubility when working with such compounds in various chemical contexts.

In conclusion, understanding the solubility characteristics of aniline in sulfuric acid not only aids in practical applications but also deepens our understanding of acid-base interactions within organic chemistry.

Interesting facts

Interesting Facts about Aniline in Sulfuric Acid

Aniline, an aromatic amine, is a remarkable compound that offers a wealth of intriguing characteristics, particularly when dissolved in sulfuric acid. Here are some captivating facts that highlight its significance:

  • Foundation of Dyes: Aniline is primarily known as a precursor for various dyes, specifically azo dyes, which are pivotal in the textile industry. The ability to form vibrant colors is a crucial trait of aniline.
  • Historical Significance: Discovered in 1826, aniline was one of the first organic compounds to be synthesized, marking a significant milestone in organic chemistry.
  • Chemical Reactivity: In the presence of sulfuric acid, aniline undergoes sulfonation, an important chemical reaction that introduces sulfate groups, enhancing its reactivity and expanding its application range.
  • Biological Relevance: Aniline is also studied for its biological effects; it acts as an intermediator in the formation of various pharmaceuticals and agrochemicals.
  • Toxicity Considerations: While aniline has many practical uses, it is essential to handle it with caution. Exposure can lead to health risks, emphasizing the importance of safety protocols in the laboratory.

Quotes from Experts

A well-known chemist once said, "Understanding the properties of aniline not only unveils its multifaceted applications but also showcases the beauty and complexity of organic chemistry."

In summary, the study of aniline, especially in the acidic environment provided by sulfuric acid, reveals a compound full of potential and intrigue. Its role in modern industry, coupled with its historical journey and biological implications, makes it an essential subject of research in chemistry.

Synonyms
Benzenamine, sulfate (2:1)
542-16-5
Aniline hemisulfate
Dianilinium sulphate
3BM77321CW
ANILINE HEMISULPHATE
ANILINUM SULPHURICUM
ANILINE HEMISULFATE [MI]
DTXSID20883433
ANILINUM SULPHURICUM [HPUS]
EINECS 208-805-0
BENZENAMINE, SULPHATE (2:1)
DTXCID401022964
208-805-0
aniline;sulfuric acid
Aniline sulfate salt
MFCD00013110
Aniline sulfate, 98%
UNII-3BM77321CW
FUKMEFZGEMVGLD-UHFFFAOYSA-N
AKOS015888381
AS-10318
Q27257011