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Orange II

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Identification
Molecular formula
C16H11N2O4S1
CAS number
633-96-5
IUPAC name
7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic acid
State
State

Orange II is typically in a solid state at room temperature. It is a stable compound and, due to its solid form, can be easily handled and stored in ambient conditions.

Melting point (Celsius)
390.00
Melting point (Kelvin)
663.15
Boiling point (Celsius)
169.00
Boiling point (Kelvin)
442.15
General information
Molecular weight
350.32g/mol
Molar mass
350.3200g/mol
Density
1.5234g/cm3
Appearence

Orange II is an organic compound that appears as a bright orange to red-orange powder. It's known for its vivid color and is often used as a dye for textiles, paper, and as a pH indicator in laboratories.

Comment on solubility

Solubility of 7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic acid

The compound 7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic acid showcases interesting solubility properties owing to its structural characteristics. Here are some key points regarding its solubility:

  • Polarity: Given the presence of multiple sulfonic acid groups, this compound exhibits significant polarity, which enhances its ability to dissolve in polar solvents.
  • Water Solubility: The sulfonic acid moieties contribute to high water solubility, making it easily soluble in aqueous solutions.
  • Effect of pH: The solubility may vary with pH changes, as acid dissociation can influence its ionization state, thus affecting solubility.
  • Solvent Interaction: Due to the presence of both hydrophilic (sulfonic acid) and hydrophobic (naphthalene) components, the solubility may also depend on the solvent's composition and characteristics.

In summary, the solubility properties of this compound can be characterized as highly soluble in water, thanks to its polar nature and the functional groups present. As a result, it is often utilized in various applications where its solubility in aqueous media is advantageous, such as in dye formulations and biological studies.

Interesting facts

Interesting Facts about 7-Hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic Acid

7-Hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic acid, commonly referred to as an azo dye compound, offers numerous fascinating aspects that make it significant in both scientific research and industrial applications.

Chemical Structure and Properties

This compound belongs to a class of chemicals known as azo compounds, characterized by the presence of the azo functional group (-N=N-). Here are some unique features:

  • Azo Dyes: The compound is primarily utilized in dyeing processes due to its vibrant color properties, which make it ideal for textiles and fabrics.
  • pH Sensitivity: It exhibits different colors based on pH levels, making it a useful pH indicator in various chemical and biological applications.
  • Sulfonic Acid Groups: The presence of sulfonic acid groups increases the compound’s water solubility, which enhances its applicability in aqueous solutions.

Biological Relevance

Beyond its industrial uses, this compound has been studied for its biological interactions:

  • Antibacterial Properties: Some studies suggest that azo compounds may exhibit antibacterial qualities, potentially aiding in the development of new antimicrobial agents.
  • Environmental Impact: Research is ongoing to understand the environmental implications of azo dyes, particularly their degradation products in waste water.

Significance in Research

Researchers are actively exploring the benefits and challenges associated with azo dyes like this one. Notable points include:

  • Toxicological Studies: Azo compounds have a reputation for potential toxicity and carcinogenicity; hence, understanding the safety and risks of such compounds is critical.
  • Applications in Bioconjugation: The ability to link this compound to biomolecules opens up possibilities in biomedical applications, including disease diagnosis and targeted drug delivery.

In summary, 7-hydroxy-8-[(4-sulfo-1-naphthyl)azo]naphthalene-1-sulfonic acid is not just a colorful compound; its versatile properties and applications highlight its importance in both industrial and scientific domains. As research continues to evolve, this compound may reveal even more innovative uses in various fields.

Synonyms
SCHEMBL3345999
SCHEMBL12311434