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Acid Black 1

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Identification
Molecular formula
C34H26N6O16S4
CAS number
1064-48-8
IUPAC name
3-[4-[4-[(1,8-dihydroxy-3,6-disulfo-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-4,5-dihydroxy-naphthalene-2,7-disulfonic acid
State
State

At room temperature, Acid Black 1 is in a solid state, typically as a powder. It is known for its rich, black color and is soluble in water, which makes it useful in dyeing applications.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
480.00
Boiling point (Kelvin)
753.15
General information
Molecular weight
868.82g/mol
Molar mass
868.8240g/mol
Density
1.7854g/cm3
Appearence

Acid Black 1 appears as a black powder, often used in its sodium salt form. The powder is soluble in water, producing a deep black solution, and is commonly employed as a dye in textile industries.

Comment on solubility

Solubility of 3-[4-[4-[(1,8-dihydroxy-3,6-disulfo-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-4,5-dihydroxy-naphthalene-2,7-disulfonic acid

The solubility of 3-[4-[4-[(1,8-dihydroxy-3,6-disulfo-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-4,5-dihydroxy-naphthalene-2,7-disulfonic acid can be analyzed based on several key factors:

  • Ionic Nature: This compound contains multiple sulfonic acid groups, which enhance its ionic character, likely making it soluble in polar solvents such as water.
  • Functional Groups: The presence of hydroxyl (–OH) groups promotes hydrogen bonding, another factor contributing to its solubility in water.
  • Hydrophobic Interactions: Despite its polar characteristics, the hydrophobic naphthalene structure may affect solubility, potentially leading to variability in solubility based on concentration and temperature.

In general, water solubility is expected due to the multiple polar functional groups; however, it is crucial to consider that:

  1. With increased temperature or changes in solvent polarity, solubility can vary significantly.
  2. In concentrated solutions, the interactions among the large molecular structure may lead to reduced solubility due to aggregation.

Overall, this compound is likely to be highly soluble in aqueous environments due to its extensive hydrophilic characteristics, creating a fascinating interplay between polarity and hydrophobic structural elements.

Interesting facts

Interesting Facts about 3-[4-[4-[(1,8-dihydroxy-3,6-disulfo-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-4,5-dihydroxy-naphthalene-2,7-disulfonic acid

This compound, known for its complex structure, presents a fascinating case in chemical research and application. Here are some noteworthy aspects:

  • Colorants and Dyes: The presence of azo groups in its structure suggests that this compound may be utilized as a dye or pigment. Azo compounds are renowned for their vibrant coloration, which makes them valuable in various industries, including textiles and food.
  • Biological Activity: The hydroxyl and sulfonic acid groups within its molecular makeup hint at potential biological applications. Compounds that contain these functional groups can exhibit antibacterial and anti-inflammatory properties, thereby attracting interest for pharmaceutical research.
  • Environmental Concerns: Given the presence of azo bonds, this compound could raise environmental flags, as some azo dyes are known to break down into toxic amines under certain conditions. This factor highlights the importance of assessing the safety and environmental impact of azo compounds.
  • Structural Complexity: The intricate arrangement of multiple aromatic rings and functional groups exemplifies the beauty of organic chemistry. Such complexity often leads to interesting behavior in biological systems and holds potential for innovative chemical synthesis.

In summary, 3-[4-[4-[(1,8-dihydroxy-3,6-disulfo-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-4,5-dihydroxy-naphthalene-2,7-disulfonic acid is more than just a compound; it acts as a gateway into the realms of color, functionality, and ecological awareness in chemical research. As the study of such compounds continues, they open new doors for both theoretical exploration and practical application.

Synonyms
25180-23-8
3,3'-[(3,3'-Dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(diazene-2,1-diyl)]bis(4,5-dihydroxynaphthalene-2,7-disulfonic acid)
DTXSID60859854