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Congo red

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Identification
Molecular formula
C32H22N6Na4O14S4
CAS number
573-58-0
IUPAC name
tetrasodium;4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)-2-pyridyl]azo]benzene-1,3-disulfonate
State
State

Congo red appears as a solid at room temperature. It is commonly found as a powder, known for its bright red coloration.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
260.00
Boiling point (Kelvin)
533.15
General information
Molecular weight
696.66g/mol
Molar mass
696.6650g/mol
Density
0.9820g/cm3
Appearence

Congo red is an organic compound that is the sodium salt of a secondary oligosulfonate dye. In its solid form, it is a reddish-brown powder. When dissolved in water, it gives an intense red color characteristic of category acid anions of azo compounds.

Comment on solubility

Solubility of Tetrasodium; 4-[[4-Formyl-5-Hydroxy-6-Methyl-3-(Phosphonatooxymethyl)-2-Pyridyl]Azo]Benzene-1,3-Disulfonate

The compound tetrasodium; 4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)-2-pyridyl]azo]benzene-1,3-disulfonate, with the chemical formula C32H22N6Na4O14S4, exhibits fascinating solubility characteristics that are worth discussing. Here are some key points to consider:

  • High Solubility in Water: Due to the presence of multiple sodium ions and sulfonate groups, this compound is expected to be highly soluble in water, making it useful in various aqueous applications.
  • Polar Character: The functional groups, including phosphonato and hydroxyl, contribute to its polar nature, enhancing interaction with water molecules.
  • Factors Affecting Solubility:
    • Temperature: Solubility often increases with temperature, allowing for higher concentrations in solution.
    • pH Levels: The degree of ionization of the compound may vary with pH, influencing solubility.
    • Ionic Strength: The presence of other ions in solution can affect solubility through salt-out or salting-in effects.
  • Applications: Its solubility profile makes it suitable for use in diverse fields, including dye chemistry and pharmaceuticals.

Overall, the solubility of tetrasodium; 4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)-2-pyridyl]azo]benzene-1,3-disulfonate can be considered advantageous given its potential to dissolve readily in aqueous environments, allowing for effective utilization in various chemical processes.

Interesting facts

Interesting Facts about Tetrasodium;4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)-2-pyridyl]azo]benzene-1,3-disulfonate

This compound is a fascinating example of a complex organic molecule with a striking array of functional groups, attributed to its extensive use in various scientific applications. Here are some intriguing aspects worth noting:

  • Colorimetric Applications: The presence of the azo group in this compound makes it an effective dye, which can be utilized for colorimetric assays. Such applications are critical in biochemical research and clinical diagnostics.
  • Photochemical Properties: Due to its unique structural components, this compound exhibits interesting photochemical properties, which can be harnessed in fields such as photovoltaics and sensors.
  • Biological Implications: The phosphonate moiety suggests a potential for interaction with biological systems. Phosphonates are known to mimic phosphates, which can affect metabolism and signaling pathways in organisms.
  • Versatility in Synthesis: The synthetic methods viable for producing this compound involve advanced organic chemistry techniques, showcasing versatility in chemical synthesis that can inspire novel approaches to drug design and materials science.
  • Sustainable Chemistry: Researchers are increasingly exploring the use of tetrasodium compounds for their ecological impacts, as they can often be more biodegradable and environmentally friendly compared to their alternatives.

Overall, tetrasodium;4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)-2-pyridyl]azo]benzene-1,3-disulfonate stands as a testament to the intricate and multifaceted nature of chemical compounds. Its structure not only opens doors to functional applications but also invites further exploration in both research and industry.

Synonyms
PPADS (tetrasodium)
tetrasodium;4-[[4-formyl-5-hydroxy-6-methyl-3-(phosphonatooxymethyl)pyridin-2-yl]diazenyl]benzene-1,3-disulfonate
HY-101044
CS-0020756