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Orange G

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Identification
Molecular formula
C16H10N2NaO4S
CAS number
1936-15-8
IUPAC name
sodium;6-hydroxy-5-phenylazo-naphthalene-2-sulfonate
State
State
At room temperature, Orange G is typically in a solid state. It is stable under normal conditions, and its powder form is often used in various biological staining techniques due to its water solubility.
Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
394.00
Boiling point (Kelvin)
667.15
General information
Molecular weight
452.38g/mol
Molar mass
452.3760g/mol
Density
1.5482g/cm3
Appearence
Orange G is an organic compound that appears as an orange to brown crystalline solid. It is a synthetic dye commonly used for staining in laboratories. It is highly soluble in water, producing a bright orange solution, and is typically available in powdered form.
Comment on solubility

Solubility of Sodium 6-Hydroxy-5-Phenylazo-Naphthalene-2-Sulfonate

Sodium 6-hydroxy-5-phenylazo-naphthalene-2-sulfonate, often referred to for its vibrant color and application as a dye, exhibits distinct solubility characteristics that are important for both industrial and laboratory use. Generally, this compound is well soluble in water due to:

  • Ionic Strength: The sodium ion provides significant ionic interaction in aqueous solutions, enhancing solubility.
  • Hydrophilic Functional Groups: The presence of sulfonate groups contributes to its hydrophilicity, allowing better interaction with water molecules.
  • Sulfonation: The sulfonyl group (-SO3) is highly polar, which further increases solubility in polar solvents.

However, this compound's solubility may vary under different conditions, such as:

  • Temperature: Increased temperatures usually promote greater solubility for most salts and ionic compounds.
  • pH Levels: The solubility may be influenced by the pH of the solution, as extreme conditions can alter the ionization of functional groups.

Overall, sodium 6-hydroxy-5-phenylazo-naphthalene-2-sulfonate is considered to be a highly water-soluble compound, making it versatile for various applications in both chemical synthesis and analytical chemistry. As with many compounds, understanding its solubility can provide key insights into its behavior in different chemical environments.

Interesting facts

Interesting Facts about Sodium 6-Hydroxy-5-Phenylazo-Naphthalene-2-Sulfonate

Sodium 6-hydroxy-5-phenylazo-naphthalene-2-sulfonate, commonly known as a dye or pigment in various industrial applications, possesses intriguing properties that make it an important compound in both chemistry and practical uses. Here, we delve into some fascinating aspects of this compound:

  • Versatile Applications: This compound is widely used in the textile industry for dyeing fabrics. Its vibrant color can enhance the visual appeal of materials, making it a favorite among manufacturers.
  • Environmental Considerations: The use of azo dyes, including this compound, has raised awareness regarding environmental impact. Researchers are actively investigating ways to develop more sustainable and eco-friendly alternatives.
  • Analytical Chemistry: In addition to its industrial applications, sodium 6-hydroxy-5-phenylazo-naphthalene-2-sulfonate is utilized as a reagent in analytical chemistry, particularly in spectrophotometric analysis where it can help in detecting specific compounds.
  • Structural Significance: The inclusion of the naphthalene ring and sulfonate group in its structure contributes to its solubility and reactivity, which are crucial for its functionality as a dye.
  • Historical Relevance: Azo compounds have a rich history; they were first synthesized in the 19th century, paving the way for the development of a whole class of synthetic dyes.

In conclusion, sodium 6-hydroxy-5-phenylazo-naphthalene-2-sulfonate is more than just a dye; it's a compound that reflects both the advancement of synthetic chemistry and the ongoing dialogue about sustainability in industrial practices. The future of its usage may involve innovative approaches that balance efficacy and environmental responsibility.