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Disodium 5-(3-carboxy-4-hydroxyphenylazo)-2-hydroxybenzoate

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Identification
Molecular formula
C13H8N2Na2O6
CAS number
3567-69-9
IUPAC name
disodium;5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate
State
State

At room temperature, it is typically a solid powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
380.27g/mol
Molar mass
380.2700g/mol
Density
1.6500g/cm3
Appearence

Disodium 5-(3-carboxy-4-hydroxyphenylazo)-2-hydroxybenzoate, commonly known as a component in food dyes, typically appears as an orange to red powder or crystalline solid. This compound is widely used for its vibrant color properties.

Comment on solubility

Solubility of Disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate

Disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate exhibits intriguing solubility characteristics due to its chemical structure. This compound, often used in various applications, is a salt derivative that enhances its interaction with solvents.

Key Points on Solubility

  • Water Solubility: Being a disodium salt, it is generally soluble in water, making it straightforward to incorporate into aqueous solutions.
  • Organic Solvents: The solubility in organic solvents can be variable. It may show limited solubility in non-polar solvents due to the presence of hydrophilic carboxyl and hydroxy groups.
  • pH Dependence: The solubility of this compound may be affected by the pH of the solution. Generally, at higher pH levels, ionization increases, enhancing solubility.

As noted, "the more polar the solvent, the better the solubility for polar compounds." This phrase succinctly summarizes the solubility behavior of disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate.

In practical terms, this compound can be utilized effectively in its dissolved form, particularly in water-based applications, whereas its solubility in organic media may require careful consideration based on the particular solvent used.

Interesting facts

Interesting Facts about Disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate

Disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate, commonly referred to as a type of azo dye, presents a fascinating subject for both chemists and enthusiasts alike. Here are several key aspects that make this compound remarkable:

  • Azo Dye Properties: This compound features an azo functional group (–N=N–), which is characteristic of many dyes. Azo dyes are known for their vivid colors and stability, making them popular in various applications.
  • pH Indicator: The presence of carboxyl and hydroxyl groups allows this compound to act as a pH indicator. It changes color at different pH levels, making it useful in analytical chemistry for detecting acidity or basicity.
  • Biological Relevance: Azo compounds often exhibit biological activity. Research suggests that they may have applications in pharmaceuticals, specifically for drug delivery systems, due to their ability to release active substances under certain conditions.
  • Environmental Considerations: While azo dyes are widely used in textiles and food industries, there are concerns over their environmental impact. Some azo dyes can be toxic and potentially carcinogenic, leading to stricter regulations regarding their use.
  • Historical Significance: The development of azo dyes marked a significant milestone in the history of synthetic dyes, beginning in the 19th century. Their invention allowed for mass production of colorants and revolutionized the dyeing industry.

As a compound of interest, disodium 5-(3-carboxylato-4-hydroxy-phenyl)azo-2-hydroxy-benzoate illustrates the intersection of chemistry, biology, and environmental science. It is a prime example of how chemical compounds can have both beneficial applications and potential risks, inspiring ongoing research and innovation in the field.