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Sodium naphthionate

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Identification
Molecular formula
C20H13N2NaO3S
CAS number
145-50-6
IUPAC name
sodium;2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate
State
State

Sodium naphthionate is typically found as a solid at room temperature and is usually supplied as a powder or crystalline form. Its state allows for easy handling and mixing in various applications, particularly in the synthesis of dyes and pigments.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
280.00
Boiling point (Kelvin)
553.15
General information
Molecular weight
388.38g/mol
Molar mass
388.3800g/mol
Density
1.4000g/cm3
Appearence

Sodium naphthionate typically appears as a reddish-orange to brown powder. It is known for its vibrant color, which can be used in dyeing processes.

Comment on solubility

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

Sodium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate is a fascinating compound known for its unique solubility characteristics. Here are some key points regarding its solubility:

  • Solvent Preference: This compound is typically soluble in polar solvents, which include water and alcohols, owing to its ionic sodium component and polar functional groups.
  • Temperature Influence: Like many ionic compounds, its solubility may increase with temperature, enhancing the interaction with solvent molecules.
  • pH Dependence: The solubility can be affected by pH levels; for instance, increased acidity might promote better solvation due to enhanced hydrogen bonding.

In summary, Sodium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate exhibits a high degree of solubility in water and similar polar environments, making it a versatile compound in various applications, notably in dye chemistry. Understanding its solubility behavior can be crucial for effective use in both laboratory and industrial settings.

Interesting facts

Interesting Facts about Sodium 2-[(2-Hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate

Sodium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate, commonly referred to as a dye compound, is notable for its vibrant color and versatile applications in various fields. Here are some compelling insights:

  • Dye Properties: This compound is a type of azo dye, which is characterized by the presence of the azo group (–N=N–). Azo dyes are known for their bright colors and are widely used in textiles and food products.
  • pH Indicator: Due to its chemical structure, it can also act as a pH indicator—it changes color depending on the acidity or basicity of a solution.
  • Biological Applications: This compound has interesting applications in biological systems, particularly in cell staining and visualization techniques in microbiology.
  • Environmental Concerns: As with many azo dyes, there are environmental considerations; some azo dyes can degrade into harmful aromatic amines. This has led to increased scrutiny and regulations surrounding their use.

Fun Fact!

One of the most fascinating aspects of sodium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate is its ability to interact with metal ions. The compound can form complexes, which can be exploited in various analytical chemistry techniques. This property makes it valuable not just for its coloring capabilities but also in metal ion detection assays.

In summary, sodium 2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate is more than just a dye; it embodies the intersection of chemistry, biology, and environmental science, illustrating the multifaceted role of chemical compounds in our world.