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Amaranth

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Identification
Molecular formula
C20H11N2NaO10S3
CAS number
915-67-3
IUPAC name
sodium;5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate
State
State

Amaranth is typically a solid at room temperature.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
604.47g/mol
Molar mass
604.4740g/mol
Density
1.7250g/cm3
Appearence

The compound is typically a reddish-brown powder, known for its vibrant color which is used as a dye.

Comment on solubility

Solubility of Sodium 5-Amino-4-Hydroxy-7-Sulfo-naphthalene-2-sulfonate

Sodium 5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate, often referred to as a dye or coloring agent, exhibits notable solubility characteristics that make it particularly useful in various applications. Here are some key points regarding its solubility:

  • High Water Solubility: This compound is highly soluble in water, which is attributed to the presence of multiple sulfonate groups that interact favorably with water molecules.
  • pH Dependence: The solubility can be influenced by the pH of the solution. Generally, optimal solubility is observed in neutral to slightly alkaline conditions.
  • Non-Polar Solvents: Sodium 5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate is poorly soluble in non-polar organic solvents, such as hexane or octane, due to its polar nature.
  • Ionic Strength: Increased ionic strength in solution may lead to changes in solubility, making it essential to consider the presence of other ions in the medium.
  • Hydration: Due to its ionic nature, it tends to form hydrated complexes, which can further enhance its ability to dissolve in aqueous environments.

In conclusion, the solubility of sodium 5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate is a crucial factor in its functionality, allowing for effective use in fields such as dyeing, biological staining, and various industrial applications. Understanding its solubility properties provides valuable insights for optimal application and formulation strategies.

Interesting facts

Interesting Facts about Sodium 5-Amino-4-Hydroxy-7-Sulfo-Naphthalene-2-Sulfonate

Sodium 5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate, often referred to as a type of dye or indicator compound, boasts a range of fascinating properties and applications that intrigue chemists and industry professionals alike.

1. Unique Structure

The compound's structure features a naphthalene ring, which is characteristic of many dyes. This allows it to have unique chromatic properties, meaning it can absorb specific wavelengths of light, making it useful in various coloration applications.

2. Role in Dye Chemistry

As a dye, the sodium salt form increases its solubility in water, enhancing its efficacy in aquous environments. This property is fundamental in applications such as:

  • Staining biological samples: It is commonly used in laboratory settings to stain cells and tissues for microscopy.
  • Indicators: Besides dyeing, it can serve as a pH indicator, changing color in response to different pH levels.
  • Watercolor and textile industries: Its vibrant color quality makes it a suitable choice in the production of inks and fabric dyes.

3. Applications Beyond Dyes

In addition to its primary function as a dye, the compound has been explored for its potential pharmaceutical applications:

  • **Antimicrobial properties:** Some studies suggest that it might inhibit the growth of certain bacteria.
  • Drug delivery systems: Its chemical structure can potentially be utilized in the development of drug delivery vehicles.

4. Environmental Considerations

Like many synthetic dyes, it's essential to consider its environmental impact. Research is ongoing to explore biodegradable alternatives and ways to mitigate pollution stemming from dye effluents.

Conclusion

In summary, Sodium 5-amino-4-hydroxy-7-sulfo-naphthalene-2-sulfonate is not merely a dye, but a compound rich in potential applications and significance in both chemical and biological fields. Its versatile nature continues to be the focus of research and innovation in chemistry.