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Ponceau 2R

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Identification
Molecular formula
C27H18N4O8S2
CAS number
3761-53-3
IUPAC name
5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid
State
State

At room temperature, Ponceau 2R is typically found in a solid state. It is a stable, crystalline compound that does not readily evaporate.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
604.50g/mol
Molar mass
604.4950g/mol
Density
1.6190g/cm3
Appearence

Ponceau 2R appears as a red powder. It is used primarily as a synthetic azo dye and is known for its brilliant crimson hue. Its bright color makes it useful in various staining applications, particularly in histology and the food industry.

Comment on solubility

Solubility of 5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid

The solubility of 5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid in various solvents can be quite intriguing due to its complex structure. This compound, with its multiple functional groups, exhibits diverse solubility properties that may vary significantly depending on the solvent environment.

Factors Influencing Solubility:

  • Polar Groups: The presence of sulfonate and hydroxyl groups suggests enhanced solubility in polar solvents, such as water.
  • Aromatic Systems: The extensive aromatic character may lead to significant interactions in nonpolar solvents, potentially impacting solubility negatively.
  • pH Sensitivity: Being an acid, solubility can also shift with changes in pH, particularly when ionization occurs.

Experimental analyses indicate that this compound is soluble in aqueous solutions, particularly due to the presence of its sulfonic acid functionality which contributes to its ability to form hydrogen bonds and ionic interactions.

In summary, while 5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid displays marked solubility in water, its solubility can be affected by various factors such as solvent type, ionic strength, and environmental pH. Thus, when studying its solubility, one must consider the context of the solution environment.

Interesting facts

Interesting Facts about 5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid

5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid, often referred to in scientific literature as a complex azo dye, presents a multitude of fascinating aspects for chemists and researchers:

  • Azo Compounds: This compound belongs to the class of azo dyes, characterized by the presence of one or more azo groups (–N=N–). These compounds are renowned for their vibrant colors and are widely utilized in various industries, particularly in textiles and food.
  • Biological Significance: The compound's structure contains an amino group, which is critical in reactions with biomolecules. This feature positions it as a candidate for studies in biochemistry and molecular biology.
  • Applications in Dyes: Due to its extensive conjugation and the presence of sulfonic acid groups, this compound is soluble in water, making it useful for dyeing processes and as a potential tracer in biological studies.
  • Environmental Considerations: With increasing awareness regarding the environmental impact of synthetic dyes, research surrounding this compound includes the development of eco-friendly alternatives or methods for degradation of azo dyes in wastewater treatment.
  • Research and Development: The applications of azo compounds extend beyond textiles; they are being explored in drug design and imaging techniques due to their ability to absorb and emit light at specific wavelengths.

In sum, 5-[4-[4-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo]phenyl]phenyl]azo-2-hydroxy-benzoic acid is not just a chemical entity but embodies numerous avenues for exploration in chemistry, environmental science, and pharmaceuticals. As scientists continue to unravel the complexities of such compounds, the potential for innovative applications grows exponentially!

Synonyms
25255-06-5
5-({4'-[(7-Amino-1-hydroxy-3-sulfonaphthalen-2-yl)diazenyl][1,1'-biphenyl]-4-yl}diazenyl)-2-hydroxybenzoic acid
SCHEMBL11694403
DTXSID00859732