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Acid Black 1

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Identification
Molecular formula
C22H14N6Na2O9S2
CAS number
1064-48-8
IUPAC name
4-imino-5-oxo-3,6-bis[[4-(2-sulfooxyethylsulfonyl)phenyl]hydrazono]naphthalene-2,7-disulfonic acid
State
State

At room temperature, it remains in a solid state, typically as a powder form which is widely utilized as an acid dye.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
310.00
Boiling point (Kelvin)
583.15
General information
Molecular weight
865.93g/mol
Molar mass
865.9200g/mol
Density
0.8800g/cm3
Appearence

Acid Black 1 appears as a black powder. It is often used as a dye in industries and can impart a deep black color to materials.

Comment on solubility

Solubility of 4-imino-5-oxo-3,6-bis[[4-(2-sulfooxyethylsulfonyl)phenyl]hydrazono]naphthalene-2,7-disulfonic acid

The compound 4-imino-5-oxo-3,6-bis[[4-(2-sulfooxyethylsulfonyl)phenyl]hydrazono]naphthalene-2,7-disulfonic acid is characterized by its notable solubility properties, primarily attributed to the presence of multiple sulfonic acid groups. These features can greatly enhance its interactions with polar solvents.

  • High Solubility in Water: The numerous sulfonic acid groups promote strong ionic interactions with water, leading to increased solubility.
  • Influence of pH: The solubility can be affected by pH levels due to protonation and deprotonation of the sulfonic acid groups.
  • Temperature Dependency: As with many water-soluble compounds, solubility may increase with temperature, allowing for more effective dissolution.

In general, compounds with multiple sulfonate groups tend to exhibit enhanced solubility compared to their less functionalized counterparts. This compound's ability to dissolve in aqueous solutions is crucial for its potential applications in various fields, such as **dye chemistry** and **pharmaceuticals**. Consequently, understanding its solubility behavior is essential for optimizing its use in practical applications.

Interesting facts

Interesting Facts about 4-imino-5-oxo-3,6-bis[[4-(2-sulfooxyethylsulfonyl)phenyl]hydrazono]naphthalene-2,7-disulfonic acid

This compound, known for its complex structure and sulfonic acid groups, belongs to the class of azo dyes that are widely used in various industries. Its remarkable features make it a subject of interest in both chemical research and practical applications.

Chemical Significance

  • Versatile Applications: Due to its ability to form strong bonds with various substrates, this compound is commonly used in textile dyeing and can impart vivid colors to fabrics.
  • Photostability: The stability of the compound under light exposure makes it suitable for applications in regions with intense light conditions, maintaining color strength in dyed materials.
  • Environmental Considerations: The presence of sulfonic acid groups enhances the solubility of the dye in water, making it important for eco-friendly practices in dyeing processes.

Unique Features

  • Hydrazone Functionality: This compound contains hydrazono linkages, which offer unique reactivity that can be leveraged for further chemical transformations or interactions.
  • Acidic Nature: As a disulfonic acid, it can act as a proton donor, which opens up its potential in acid-base chemistry applications.
  • Research Potential: The intricate structure and multiple functional groups present opportunities for investigating new properties and behaviors through synthetic modifications.

The exploration of this compound is exciting, not only because of its practical usage in industries but also for the insights it can provide into the chemistry of azo dyes and their interactions with other chemical species. As we continue to discover more about such compounds, we can harness their properties for innovations in dye technology and environmental chemistry.