Congo Red

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Identification

Molecular formula
C32H22N6Na2O6S2
CAS Number
573-58-0
IUPAC Name
5-amino-3-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid
Molecular Weight
696.67g/mol
Melting Point
(Celsius)
Boiling Point
(Celsius)
Density
0.9966g/cm3
Synonyms
25180-19-2
Interesting facts

Interesting Facts about 5-Amino-3-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic Acid

This complex compound, often identified as a type of azo dye, is known for its vibrant color and extensive applications in various industries. Here are some captivating aspects of this compound:

  • Azo Dye Family: As a member of the azo dye family, this compound contains the azo group (–N=N–), which is pivotal in conferring distinctive colors. Azo dyes are renowned for their brightness and stability.
  • Applications: This compound finds application in fields such as:
    • Textile Industry: Used for dyeing fabrics due to its vivid shades.
    • Biological Staining: Utilized in laboratory settings for staining cells and tissues.
    • Environmental Science: Assists in tracing pollutants in studies assessing water quality.
  • Structure Insights: The intricate structure showcases:
    • Amino and hydroxyl functional groups that enhance its reactivity.
    • A substantial number of sulfonic acid groups, which contribute to its solubility in water.
    • A naphthalene backbone, which provides stability and contributes to its color properties.
  • Environmental Considerations: Although effective as a dye, some azo dyes are under scrutiny due to potential environmental and health impacts. As a result, there are ongoing studies to ensure safe usage.
  • Historical Context: Azo dyes have a rich history dating back to the mid-19th century, revolutionizing the dyeing industry with their affordability and versatility.

In summary, 5-amino-3-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid is not just a derivative of chemistry but a compound that intertwines science with art through its vibrant applications. As we advance, understanding such compounds will help us innovate while maintaining safety and sustainability.

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