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Acid Black 1

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Identification
Molecular formula
C28H19N5Na4O14S4
CAS number
1064-48-8
IUPAC name
4-acetamido-5-hydroxy-6-[[7-sulfo-4-(4-sulfophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonic acid
State
State

At room temperature, this compound is typically a solid. It is not volatile and generally used in its powder form for industrial applications.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
250.00
Boiling point (Kelvin)
523.15
General information
Molecular weight
941.83g/mol
Molar mass
941.8300g/mol
Density
0.8900g/cm3
Appearence

The compound appears as a dark green to black powder. It is a synthetic dye commonly used in ink and dyeing applications. Its colors can vary slightly depending on its concentration and the medium it is in.

Comment on solubility

Solubility of 4-Acetamido-5-Hydroxy-6-[[7-Sulfo-4-(4-Sulfophenyl)Azo-1-Naphthyl]Azo]Naphthalene-1,7-Disulfonic Acid

The solubility of this compound is influenced by its complex structure and functional groups. As a sulfonic acid, it contains multiple sulfonate groups which enhance its solubility in water. Here are some key points regarding its solubility:

  • High Water Solubility: The presence of sulfonic acid groups generally indicates that the compound is highly soluble in polar solvents, particularly water, due to their ability to form hydrogen bonds and ionic interactions.
  • Effect of pH: The solubility can also vary with changes in pH. At higher pH levels, the sulfonic groups may remain deprotonated, maintaining the compound's solubility.
  • Temperature Influence: Another factor that may affect solubility is temperature; typically, increased temperature can enhance the solubility of many compounds.

In conclusion, due to its multi-functional sulfonate groups and polar characteristics, 4-acetamido-5-hydroxy-6-[[7-sulfo-4-(4-sulfophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonic acid is expected to exhibit considerable solubility in aqueous solutions, potentially making it useful in various applications, especially in dye chemistry and biological assessments.

Interesting facts

Interesting Facts about 4-acetamido-5-hydroxy-6-[[7-sulfo-4-(4-sulfophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonic acid

4-acetamido-5-hydroxy-6-[[7-sulfo-4-(4-sulfophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonic acid is a captivating compound in the realm of organic chemistry, particularly known for its role as a dye. Here are some intriguing aspects of this compound:

  • Versatile Applications: This compound is primarily utilized as a dye in various industries, notably in textiles, where it imparts brilliant colors to fabrics.
  • Complex Structure: The presence of multiple functional groups such as amido, hydroxy, and sulfonic acid highlights the compound’s intricate design, allowing it to engage in various chemical interactions.
  • Sulfonation: The sulfonic acid groups enhance the compound's solubility in water, making it particularly useful for applications that require water-soluble dyes.
  • Azo Group Reactivity: As it contains azo linkages, this compound showcases characteristic reactivity associated with azo compounds, including the potential for photochemical properties.

This compound exemplifies how a well-designed molecular architecture can lead to robust functionality in applied chemistry. Moreover, the study of such dyes not only enriches the field of materials science but also bridges the gap between chemistry and artistic expression. As one researcher aptly noted, "The beauty of color chemistry lies in its ability to transform the ordinary into the extraordinary." This statement echoes the significance of compounds like 4-acetamido-5-hydroxy-6-[[7-sulfo-4-(4-sulfophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonic acid in both scientific and aesthetic realms.

Synonyms
13699-36-0
4-acetamido-5-hydroxy-6-[[7-sulfo-4-[(4-sulfophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonic acid
4-acetamido-5-hydroxy-6-((7-sulfo-4-((4-sulfophenyl)diazenyl)naphthalen-1-yl)diazenyl)naphthalene-1,7-disulfonic acid
SCHEMBL4207305
SCHEMBL4207318
SCHEMBL6120387
SCHEMBL8647387
CHEMBL1897478
SCHEMBL18775362
SCHEMBL19805036
DTXSID20859739
CHEBI:184515
E151
4-(Acetylamino)-5-hydroxy-6-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthalenyl]azo]-1,7-naphthalenedisulfonic acid, 9CI
4-(Acetylamino)-5-hydroxy-6-[2-[7-sulfo-4-[2-(4-sulfophenyl)diazenyl]-1-naphthalenyl]diazenyl]-1,7-naphthalenedisulfonic acid
4-acetamido-5-hydroxy-6-((7-sulfo-4-((4-sulfophenyl)diazenyl)naphthalen-1-yl)diazenyl)naphthalene-1,7-disulfonicacid
4-acetamido-5-hydroxy-6-[[7-sulo-4-[(4-sulophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulonic acid
N-{8-hydroxy-4,6-disulfO-7-[(e)-2-{7-sulfO-4-[(e)-2-(4-sulfophenyl)diazen-1-yl]naphthalen-1-yl}diazen-1-yl]naphthalen-1-yl}ethanimidic acid