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Sodium naphthionate

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Identification
Molecular formula
C16H11N2NaO4S
CAS number
2611-82-7
IUPAC name
sodium;4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate
State
State

At room temperature, sodium naphthionate is in a solid state. It is usually provided in the form of a brightly colored powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
743.00
Boiling point (Kelvin)
1 016.15
General information
Molecular weight
350.32g/mol
Molar mass
350.3200g/mol
Density
1.4100g/cm3
Appearence

Sodium naphthionate typically appears as an orange to red powder. It may also come in the form of granules or crystals. The material is notable for its vivid coloration, which is due to its azo compound structure.

Comment on solubility

Solubility of sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate

The solubility of sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate, often referred to as a dye or azo compound, is quite remarkable in various solvents. Below are some key points regarding its solubility:

  • Water Solubility: This compound is generally soluble in water due to the presence of the sulfonate group, which enhances its hydrophilic nature.
  • Organic Solvents: It may show limited solubility in common organic solvents such as ethanol or acetone, reflecting its structural characteristics.
  • pH Dependence: The solubility can be affected by the pH of the solution. In alkaline conditions, the solubility may increase due to the ionization of functional groups.
  • Temperature Effects: An increase in temperature often leads to enhanced solubility in aqueous solutions, which can be crucial for various applications.

In summary, sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate is a water-soluble compound, making it particularly useful in dyeing processes and other applications where solubility plays a critical role. Adjustments in environmental factors such as pH and temperature can further optimize its solubility, leading to enhanced performance in its intended applications.

Interesting facts

Interesting Facts About Sodium 4-[(4-Hydroxy-1-naphthyl)azo]benzenesulfonate

Sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate, often referred to as a synthetic dye and azo compound, possesses several intriguing characteristics that make it notable in both industrial and laboratory settings. Here are a few key points about this compound:

  • Dye Application: This compound is primarily utilized in dyeing processes, particularly in textiles, where its vibrant color provides aesthetic appeal.
  • Analytical Chemistry: Its structure and properties make it an important reagent in analytical chemistry, especially in colorimetric assays, where it aids in measuring concentrations of substances based on color change.
  • Environmental Considerations: As with many azo dyes, the potential environmental impact during production and post-consumption is a critical consideration, pushing research towards safer alternatives and better waste management strategies.
  • Health Aspects: While this compound serves functional purposes, it also prompts discussions about *azo dye* safety, given some azo compounds have been associated with health risks. Research continues to evaluate the implications of such compounds in consumer products.

Moreover, as a compound, it exemplifies the intersection of art and science, as the world of textiles blends creativity with chemical ingenuity. **"Color is the keyboard, the eye is the hammer, and the soul is the piano with many strings,"** said Wassily Kandinsky, emphasizing the vital role of color in both art and science.

In conclusion, sodium 4-[(4-hydroxy-1-naphthyl)azo]benzenesulfonate serves not only as a tool for coloration but also as a subject for ongoing research and discussion regarding safety, environmental impact, and applications in various fields.