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Orange G

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Identification
Molecular formula
C16H10N2O7S
CAS number
1936-15-8
IUPAC name
4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid
State
State

At room temperature, Orange G is in a solid state, typically appearing as a crystalline powder.

Melting point (Celsius)
265.00
Melting point (Kelvin)
538.15
Boiling point (Celsius)
400.00
Boiling point (Kelvin)
673.00
General information
Molecular weight
452.38g/mol
Molar mass
452.3790g/mol
Density
1.5500g/cm3
Appearence

Orange G is an orange colored powder. It is known for its usage as a dye and has a bright, vivid coloration which makes it suitable for various staining purposes.

Comment on solubility

Solubility of 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid

The compound 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid presents interesting characteristics regarding its solubility. This azo compound is known for its usage in various applications, which leads to a significant breakdown of solubility factors:

  • Polar and Ionic Nature: The presence of the sulfonic acid group (-SO3H) enhances its polarity, leading to increased solubility in polar solvents, particularly water.
  • pH Dependency: The solubility is also influenced by the pH of the solution. At lower pH values, the sulfonic acid may remain protonated, affecting the compound's overall solubility behavior.
  • Temperature Effects: Like many other compounds, solubility can increase with temperature, facilitating applications that require dissolution in higher-temperature solutions.
  • Solvent Interaction: The compound is expected to have significant solubility in environments enriched with organic solvents due to its aromatic structure and hydrophobic characteristics.

In summary, the solubility of 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid is largely determined by its polar functional groups, interaction with solvents, and sensitivity to changes in both pH and temperature. As noted, this compound's effective use often hinges on understanding these solubility traits.

Interesting facts

Interesting Facts about 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid

4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid, often referred to as a part of the azo compound family, is a fascinating chemical with diverse applications in both research and industry. Here are some intriguing aspects of this compound:

  • Azo Compounds: This compound belongs to the azo family, known for their vibrant colors, which arise due to the presence of the azo group (-N=N-). Azo compounds are frequently used in dyes and pigments, making them essential in the textile and food industries.
  • Importance of Nitro Groups: The nitro group (-NO2) in its structure is key for enhancing the reactivity of the compound, making it a valuable intermediate for synthesizing other chemical compounds.
  • Biological Applications: Research has indicated that several azo compounds possess biological activity, including antibacterial and antitumor properties. This raises the potential for further exploration in pharmaceutical applications.
  • Colorimetric Analysis: Due to its distinct coloration, this compound is often utilized in colorimetric assays, providing accurate measurements in various scientific analyses.
  • Environmental Considerations: As with many azo dyes, there is growing concern regarding their environmental impact and potential toxicity. Scientists are investigating methods to degrade azo compounds safely or to find safer alternatives.

As one delves deeper into the chemistry of compounds like 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonic acid, it becomes clear that the interplay of structure and function is rich with implications for multiple fields, including chemistry, material science, and biotechnology. The journey of discovery continues as researchers uncover new properties and applications for these intriguing compounds.