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Congo Red

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Identification
Molecular formula
C32H22N6O6S2Na2
CAS number
573-58-0
IUPAC name
4-[(4-aminophenyl)-(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]aniline;4-[(3-carboxy-2-hydroxy-1-naphthyl)methyl]-3-hydroxy-naphthalene-2-carboxylic acid
State
State
Congo Red is typically a solid at room temperature. This compound is commonly used in synthetic applications and is known for its application as a pH indicator or dye in histology.
Melting point (Celsius)
357.15
Melting point (Kelvin)
630.30
Boiling point (Celsius)
774.85
Boiling point (Kelvin)
1 047.15
General information
Molecular weight
696.67g/mol
Molar mass
696.6650g/mol
Density
0.9966g/cm3
Appearence
Congo Red appears as a red-brown powder.

It displays a distinct color change in different pH environments, appearing red in basic conditions and blue when in acidic conditions.

Comment on solubility

Solubility Insights

The solubility of the compound 4-[(4-aminophenyl)-(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]aniline; 4-[(3-carboxy-2-hydroxy-1-naphthyl)methyl]-3-hydroxy-naphthalene-2-carboxylic acid can be quite complex due to its multifaceted structure. Understanding its solubility behavior is crucial for applications in pharmaceuticals and material science. Here are some key points to consider:

  • Polarity: The presence of both hydrophilic (carboxylic acid and hydroxyl groups) and hydrophobic (aromatic rings) functionalities implies that the compound may have limited solubility in non-polar solvents, while being more soluble in polar solvents like water.
  • pH Dependence: The solubility may vary significantly with changes in pH. The carboxylic acid group's ionization can enhance solubility in basic environments, while creating a more pronounced hydrophilic character.
  • Temperature Effects: Solubility may also increase with temperature, as increased kinetic energy often allows for greater interactions between the solute and solvent molecules.
  • Complexation: This compound may have the ability to form complexes with metal ions or other molecules, which can further influence its overall solubility profile.

In summary, while the solubility of this intricate compound is not straightforward, it exhibits a mix of characteristics that suggests potential solubility in polar solvents under the right conditions. As noted: “The key to understanding solubility lies in exploring the balance of chemical interactions.”

Interesting facts

Exploring a Complex Organic Compound

The compound 4-[(4-aminophenyl)-(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]aniline;4-[(3-carboxy-2-hydroxy-1-naphthyl)methyl]-3-hydroxy-naphthalene-2-carboxylic acid is a fascinating example of organic chemistry that showcases the intricacies of molecular design and functionality. Here are some key points of interest regarding this compound:

  • Hybrid Structure: This compound features a hybrid structure combining an amine group with a complex naphthalene backbone. This dual functionality may enhance its potential applications in various fields such as medicinal chemistry and material science.
  • Potential Pharmaceutical Applications: The presence of amine and carboxylic acid functional groups suggests that this compound could serve as a lead structure for novel therapeutic agents, especially due to its potential bioactivity attributed to the naphthalene moieties.
  • Research Interest: Compounds similar to this one are often studied for their photophysical properties. Researchers explore how alterations in the molecular arrangement can affect the absorption and emission spectra, which is crucial for developing new dyes or photonic materials.
  • Environmental Relevance: The naphthalene derivatives are known for their environmental impact, particularly as pollutants. Understanding compounds like this could lead to better management strategies in the realm of environmental chemistry.

As one delves deeper into the world of organic compounds, this particular compound serves as a testament to the creativity and complexity inherent in chemical research. Its multifaceted structure and potential for diverse applications remind us of the endless possibilities that lie within the realm of chemistry. Research into similar compounds can lead to breakthroughs not only in pharmaceutical chemistry but also in developing advanced materials and environmental solutions.

Quote to Inspire:

"Chemistry is not only about molecules and physics; it is about the art of understanding the world around us." - Anonymous

Synonyms
AGN-PC-0JKHES
49722-31-8
SCHEMBL20639378
DTXSID30274757