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Sodium salt of 1-(2-hydroxy-1-naphthylazo)-2-naphthol-6,8-disulfonic acid

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Identification
Molecular formula
C20H13N2NaO5S
CAS number
2611-82-7
IUPAC name
sodium;4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate
State
State

At room temperature, this compound is typically found in a solid state, in the form of powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
140.00
Boiling point (Kelvin)
413.00
General information
Molecular weight
372.38g/mol
Molar mass
372.3200g/mol
Density
1.6977g/cm3
Appearence

The compound appears as a dark red to brown powder. It is often used as a dye and has an intense color due to its azo group, which is responsible for the vivid coloration.

Comment on solubility

Solubility of Sodium 4-[(2-Hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate

The solubility of sodium 4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate in water can be considered from various perspectives. Being a sodium salt, it tends to exhibit good solubility in aqueous solutions due to the ionic nature of the compound. Here are some important points to consider:

  • Aqueous Solubility: The ionic character usually leads to increased solubility in polar solvents like water, which facilitates the dissociation of the sodium ion.
  • Temperature Dependence: As is typical with many salts, solubility may increase with temperature, allowing for a wider range of conditions under which the compound dissolves.
  • pH Influence: The compound's solubility could be influenced by the pH of the solution, which can impact the ionization state of the functional groups present.
  • Applications: Due to its solubility, this compound is often used in dyeing processes, where the ability to dissolve easily in water enhances its usability.

In summary, sodium 4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate is generally quite soluble in water, making it a valuable compound in various applications. As the saying goes, "Solubility is the key to versatility!"

Interesting facts

Interesting Facts about Sodium 4-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalene-1-Sulfonate

Sodium 4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate is a fascinating compound, particularly known for its applications in various fields. Here are some intriguing facts:

  • Dye Properties: This compound is often utilized as a dye in textile industries. Its vibrant colors make it an attractive choice for coloring fabrics.
  • Biological Applications: It has potential applications in biochemistry, specifically as a tracer in biological systems due to its solubility and the azobenzene group that allows for photo-responsive behavior.
  • Environmental Considerations: The synthesis and use of azo compounds, including this sodium salt, have raised environmental and health concerns. It is vital to explore sustainable production methods and assess its safety profiles.
  • Structure and Function: The compound features an azo (-N=N-) linkage, which is central to its color properties. Compounds with such linkages often display significant *electron delocalization*, leading to enhanced color vibrancy.
  • Analytical Applications: Beyond dyeing, it serves as a reagent in various analytical techniques, providing insights into chemical behaviors and interactions when analyzed in lab settings.

This compound serves as a great example of how chemistry intersects with industries ranging from textiles to biochemistry. As a scientist or chemistry student, understanding the properties and applications of sodium 4-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate can lead to greater innovations and safer practices in both research and industrial applications.