Skip to main content

Acid Black 1

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

At room temperature, Acid Black 1 is typically a solid, in the form of a powder.

Melting point (Celsius)
340.00
Melting point (Kelvin)
613.15
Boiling point (Celsius)
315.00
Boiling point (Kelvin)
588.15
General information
Molecular weight
616.62g/mol
Molar mass
616.6200g/mol
Density
1.7700g/cm3
Appearence

Acid Black 1 is a black powder. It is typically used as a dye and has a dark, almost coal-like appearance.

Comment on solubility

Solubility of 5-[(2-hydroxy-1-naphthyl)azo]-2-[4-[(2-hydroxy-1-naphthyl)azo]-2-sulfo-phenyl]benzenesulfonic acid

This compound, known for its complex structure and functionality, presents particular characteristics regarding its solubility in various solvents.

General Solubility Characteristics

  • Water Solubility: The presence of sulfonic acid groups suggests that this compound is likely to be highly soluble in water. The ionic nature of the sulfonate group increases its interaction with water molecules, promoting solvation.
  • Organic Solvents: Conversely, solubility in organic solvents may vary. While some organic solvents might solvate the neutral aromatic species, the overall solubility can be moderate to low due to the polar functional groups that dominate in aqueous solutions.

Factors Influencing Solubility

The solubility of this compound may be influenced by several factors, including:

  1. Temperature: As with many chemical substances, increasing temperature can enhance solubility, particularly in solid-liquid interactions.
  2. pH Levels: The pH of the solution can affect the protonation of functional groups, influencing the solubility behavior; adjusting pH may help to optimize solubility for specific applications.
  3. Presence of Other Ions: The interactions with other ions in solution can also modify solubility, particularly in applications involving ionic strength changes.

Overall, understanding the solubility of 5-[(2-hydroxy-1-naphthyl)azo]-2-[4-[(2-hydroxy-1-naphthyl)azo]-2-sulfo-phenyl]benzenesulfonic acid is crucial for its practical applications in various fields, including dye chemistry and materials science.

Interesting facts

Interesting Facts about 5-[(2-hydroxy-1-naphthyl)azo]-2-[4-[(2-hydroxy-1-naphthyl)azo]-2-sulfo-phenyl]benzenesulfonic acid

This compound, often referred to as a naphthol dye, showcases the fascinating intersection of organic chemistry and materials science. It belongs to a class of azo dyes known for their vibrant colors and complex structures. Here are some noteworthy aspects:

  • Azo Dye Classification: This compound features the azo functional group (–N=N–), which is a defining characteristic of azo dyes. These compounds are renowned for their ability to produce vivid colors, making them valuable in various applications such as textile dyeing, inks, and pigments.
  • Biological Applications: Beyond its use in industrial applications, some azo dyes are investigated for their potential biological effects. This particular compound may possess properties that make it interesting for studies in pharmacology or toxicology, particularly concerning its metabolism and biocompatibility.
  • Solubility and Stability: The structural complexity of this compound, with multiple hydroxyl and sulfonic acid groups, plays a crucial role in its solubility in water and stability under different environmental conditions. This can be critical for its uses in aqueous solutions.
  • Color Properties: The color of azo dyes typically varies with pH, and this compound is no exception. Its color can change in response to different chemical environments, which can be utilized in pH indicators or sensors.
  • Cultural Significance: Azo dyes have historic and cultural relevance, historically used in ancient textiles and artwork. This compound is part of a legacy that highlights how chemical compounds can influence cultural expressions through colors.

In the words of renowned chemist Linus Pauling, "The best way to have a good idea is to have a lot of ideas." Exploring compounds like this continues to inspire innovation and creativity within the fields of science and engineering.

Ultimately, delving into the unique properties and applications of 5-[(2-hydroxy-1-naphthyl)azo]-2-[4-[(2-hydroxy-1-naphthyl)azo]-2-sulfo-phenyl]benzenesulfonic acid helps illuminate the complex relationships between chemical structure and functional utility.

Synonyms
37678-90-3
C.I. Acid Red 97 parent
DTXSID2047771