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Acid Black 1

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Identification
Molecular formula
C22H14N6O9S2
CAS number
1064-48-8
IUPAC name
6-amino-5-[4-[4-[(2-amino-8-hydroxy-5-sulfo-1-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-1-sulfonic acid
State
State

At room temperature, Acid Black 1 is typically in a solid state, often available as a dark powder. This allows it to be easily incorporated into various industrial processes for dyeing applications.

Melting point (Celsius)
0.00
Melting point (Kelvin)
273.15
Boiling point (Celsius)
350.00
Boiling point (Kelvin)
623.15
General information
Molecular weight
616.49g/mol
Molar mass
616.4900g/mol
Density
1.6500g/cm3
Appearence

Acid Black 1 appears as a solid powder that is commonly black or dark violet in color. It is a synthetic dye used extensively in industries for providing black shade in textile and paper products. It can also appear as a fine dark granule or powder when used in its dehydrated or powdered form.

Comment on solubility

Solubility of 6-amino-5-[4-[4-[(2-amino-8-hydroxy-5-sulfo-1-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-1-sulfonic acid

This compound, with its intricate structure and multiple functional groups, presents interesting solubility characteristics. The presence of sulfonic acid groups enhances its solubility in water. Here are some key points to consider:

  • High Water Solubility: The sulfonic acid groups contribute to increased ionic character, leading to a higher tendency to dissolve in polar solvents like water.
  • Potential pH Dependency: The solubility may vary with pH; at higher pH levels, deprotonation might occur, resulting in different solubility behaviors.
  • Hydrophobic Interactions: The naphthalene moieties in the structure may introduce some hydrophobic characteristics, which could limit solubility in less polar solvents.

In conclusion, 6-amino-5-[4-[4-[(2-amino-8-hydroxy-5-sulfo-1-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-1-sulfonic acid is expected to be highly soluble in aqueous solutions, particularly due to its functional sulfonate groups, despite its complex multi-ring structure that affects solubility to some extent.

Interesting facts

Interesting Facts about 6-amino-5-[4-[4-[(2-amino-8-hydroxy-5-sulfo-1-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-1-sulfonic acid

This compound, commonly known as a dye intermediate, has a fascinating role in the world of chemical synthesis and applications. Here are some key points to explore:

  • Azo Compounds: This compound belongs to the class of azo compounds, which are characterized by the presence of a -N=N- bond. Azo dyes, like this one, are known for their vivid colors and are widely used in the textile industry.
  • Colorant Applications: Due to its vibrant color properties, it is often utilized in various applications, including:
    • Textiles and fabrics
    • Cosmetic formulations
    • Artistic paints
  • Biological Significance: Azo dyes have been researched for their potential biological activities. Studies have shown that some azo compounds can exhibit antibacterial properties, making them a topic of interest in medicinal chemistry.
  • Environmental Concerns: While azo dyes offer many benefits, they also pose certain environmental challenges. Their breakdown products can be toxic, leading to ongoing research aimed at developing environmentally friendly alternatives or remediation strategies.
  • Structural Complexity: The molecular structure of this compound is quite complex, featuring multiple aromatic rings and functional groups. This complexity allows for a variety of chemical reactions, giving rise to numerous derivatives that can be tailored for specific uses.

In conclusion, the compound 6-amino-5-[4-[4-[(2-amino-8-hydroxy-5-sulfo-1-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-1-sulfonic acid plays a significant role in both industrial applications and scientific research. Its unique properties highlight the intricate balance between utility and environmental responsibility in the field of chemistry.