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Sunset Yellow FCF

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Identification
Molecular formula
C16H10N2Na2O7S2
CAS number
2783-94-0
IUPAC name
6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid
State
State

At room temperature, Sunset Yellow FCF is typically a solid in the form of a powder or granules.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
150.00
Boiling point (Kelvin)
423.15
General information
Molecular weight
452.37g/mol
Molar mass
452.3730g/mol
Density
0.9000g/cm3
Appearence

Sunset Yellow FCF appears as a reddish-yellow powder or granules. Its vibrant color is often used in food coloring, and it is soluble in water, providing an orange-yellow solution.

Comment on solubility

Solubility of 6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid

6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid is a fascinating compound with interesting solubility characteristics. Generally, this compound exhibits significant solubility in aqueous solutions, primarily due to the presence of multiple sulfonic acid groups in its structure. The solubility behavior can be described as follows:

  • Aqueous Solubility: The sulfonic acid groups contribute to the compound's ability to dissolve in water, making it hydrophilic.
  • Organic Solvents: It is less soluble in non-polar organic solvents, which is typical for compounds with a high degree of polarity.
  • pH Dependence: The solubility can vary with changes in pH; for example, in highly acidic or basic conditions, the solubility may increase due to ionization effects.

In practical applications, this solubility allows the compound to be utilized in various fields, particularly in dyes and biological systems. As stated, "the more sulfonate groups present, the greater the solubility in water," which highlights the structural importance of these functional groups in enhancing solubility.

In conclusion, the unique chemical structure of 6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid significantly influences its solubility, rendering it an important compound for researchers and industry professionals alike.

Interesting facts

Interesting Facts about 6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid

6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid, commonly referred to as a dye intermediate, is a fascinating compound with a variety of applications in both industry and research. Here are some captivating aspects of this compound:

  • Dye Industry Usage: This compound serves as a precursor for the synthesis of various azo dyes, known for their bright colors and versatility. Azo dyes are widely used in textiles, food, and cosmetics.
  • Acidic Properties: The presence of sulfonic acid groups gives this compound its acidic character, making it particularly useful in applications where pH control is essential.
  • Chromophoric Groups: The azo (-N=N-) group in its structure is responsible for the vibrant color of the compound, which can be modified for specific applications by altering the other substituents on the naphthalene ring.
  • Environmental Impact: While azo compounds can be colorants, some have raised environmental concerns due to their potential toxicity and effects on aquatic life. Research continues on developing degradation methods for these compounds to minimize ecological footprints.

Applications in Research

This compound also plays a role in scientific research. Its distinct structural properties allow it to be used as a marker or tracer agent in various chemical analyses, including:

  • Photochemical Studies: Investigating light absorption and energy transfer mechanisms.
  • Biological Research: Studying interactions with proteins and DNA.

As noted by chemists, “The versatility of azo compounds is both a boon and a challenge, offering colorful possibilities while demanding careful handling.” This highlights the balance required in harnessing the potential of such compounds effectively and responsibly.

In summary, 6-hydroxy-5-(3-sulfophenyl)azo-naphthalene-2-sulfonic acid is a compound with significant implications ranging from industry to environmental science. Understanding its properties and applications is crucial for further advancement in both chemistry and related fields.

Synonyms
23222-15-3
SCHEMBL4617673
DTXSID50723398
6-Oxo-5-[2-(3-sulfophenyl)hydrazinylidene]-5,6-dihydronaphthalene-2-sulfonic acid