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Direct Blue 15

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Identification
Molecular formula
C34H24N6Na2O10S2
CAS number
2429-74-5
IUPAC name
disodium;4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfonato-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonate
State
State

At room temperature, Direct Blue 15 exists as a solid in the form of a powder or granules. It is typically used in industrial applications for dyeing textiles, meaning it is frequently encountered both in dry and aqueous solution states.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
992.86g/mol
Molar mass
992.8600g/mol
Density
0.4838g/cm3
Appearence

Direct Blue 15 is a synthetic dye that generally appears as a dark blue powder or granule. It is used primarily for dyeing textiles such as cotton, nylon, wool, and silk. The compound may also appear as a vibrant blue when dissolved in water.

Comment on solubility

Solubility of Disodium 4-Hydroxy-6-[(5-Hydroxy-6-Phenylazo-7-Sulfonato-2-Naphthyl)Carbamoylamino]-3-[4-(2-Oxoethylamino)Phenyl]Azo-Naphthalene-2-Sulfonate

The solubility of disodium 4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfonato-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonate is influenced by various factors. Notably, this compound is a complex azo dye often used in dyeing processes, and its solubility characteristics can be summarized as follows:

  • Aqueous Solubility: This compound exhibits significant water solubility, primarily due to the presence of sulfonate groups that enhance its ionic nature in aqueous environments.
  • Temperature Effects: Increased temperatures generally improve solubility, leading to better dyeing rates in practical applications.
  • pH Dependence: The solubility can be affected by the pH of the solution, with higher solubility observed in alkaline conditions because of the deprotonation of sulfonic groups.
  • Organic Solubility: While predominantly soluble in water, this compound may have limited solubility in organic solvents due to its polar functional groups.

It is essential to consider these factors to optimize conditions for specific applications. As often depicted in scientific literature, "the right conditions make all the difference," and understanding the solubility behavior is crucial for successful implementation in industrial and laboratory settings.

Interesting facts

Interesting Facts about Disodium 4-Hydroxy-6-[(5-Hydroxy-6-phenylazo-7-sulfonato-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonate

This complex compound, often abbreviated due to its lengthy name, belongs to a class of compounds known as azo dyes. These synthetic dyes are characterized by the presence of the azo group (–N=N–) and are often used for their vibrant colors in various applications.

Key Points of Interest:

  • Azo Dyes: Azo dyes, like this compound, are known for their wide range of colors, which can be tailored through chemical modifications. This specific compound exhibits a rich color due to the interaction of its multiple chromophoric groups.
  • Applications: Disodium 4-Hydroxy-6-[(5-Hydroxy-6-phenylazo-7-sulfonato-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonate is largely utilized in textile dyeing, printing processes, and sometimes in biological staining due to its capacity to bind with proteins and nucleic acids.
  • Environmental Impact: Some azo dyes have been scrutinized for their environmental impact, particularly in terms of toxicity. Research into safer alternatives or methods of degradation for such compounds continues to be a significant area of study.
  • Chemical Diversity: The incorporation of sulfonate and amino groups not only enhances the solubility of this compound in water but also impacts its interaction with different substrates, making it a fascinating subject for chemists studying molecular interactions.

As noted by experts, "The chemistry of azo dyes serves as a gateway to understanding colorimetric and spectroscopic properties in organic compounds." This underscores the importance of compounds like this in both academic and practical chemistry realms.

This compound is a prime example of how complex organic structures can lead to valuable, real-world applications while presenting unique challenges regarding both synthesis and environmental considerations. Its structure opens doors to numerous research opportunities, particularly in the fields of materials science and biochemistry.