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Reactive Black 5

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Identification
Molecular formula
C26H21N5Na4O19S6
CAS number
17095-24-8
IUPAC name
3-[[4-(dihydroxyamino)phenyl]hydrazono]-4-imino-5-oxo-6-[[4-[4-[(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazono]cyclohexa-2,5-dien-1-ylidene]cyclohexa-2,5-dien-1-ylidene]hydrazono]naphthalene-2,7-disulfonic acid
State
State

At room temperature, Reactive Black 5 is generally found in a solid state, often processed and handled as a powder to facilitate its application in the dyeing of textiles.

Melting point (Celsius)
360.00
Melting point (Kelvin)
633.15
Boiling point (Celsius)
360.00
Boiling point (Kelvin)
633.15
General information
Molecular weight
991.82g/mol
Molar mass
991.8200g/mol
Density
1.8103g/cm3
Appearence

Reactive Black 5 appears as a synthetic azo dye commonly used for dyeing cellulosic fibers. It typically presents as a black powder with a blue hue and high tinting strength, which is soluble in water, producing a black solution.

Comment on solubility

Solubility of 3-[[4-(dihydroxyamino)phenyl]hydrazono]-4-imino-5-oxo-6-[[4-[4-[(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazono]cyclohexa-2,5-dien-1-ylidene]cyclohexa-2,5-dien-1-ylidene]hydrazono]naphthalene-2,7-disulfonic acid

The solubility of the compound 3-[[4-(dihydroxyamino)phenyl]hydrazono]-4-imino-5-oxo-6-[[4-[4-[(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazono]cyclohexa-2,5-dien-1-ylidene]cyclohexa-2,5-dien-1-ylidene]hydrazono]naphthalene-2,7-disulfonic acid can be quite complex due to its intricate structure. Here are some key points to consider:

  • Nature of the Compound: Being a sulfonic acid, it tends to exhibit good water solubility, especially at neutral to basic pH levels.
  • Hydrophilic Functional Groups: The presence of multiple hydroxyl (-OH) and sulfonic acid groups enhances its affinity for water, potentially improving its overall solubility.
  • Structural Factors: The bulky hydrazone and naphthalene components could create steric hindrance, which might affect solubility in non-polar solvents.
  • Temperature Dependency: Like many organic compounds, solubility may increase with temperature, as molecular interactions can weaken in warmer conditions.

Overall, this compound is likely to be soluble in polar solvents due to its emphasized ionic and hydrogen bonding capabilities, evidenced by its functional groups. Its application in various solutions might be facilitated by its unique solubility characteristics, opening pathways for further research and utilization.

Interesting facts

Interesting Facts about 3-[[4-(dihydroxyamino)phenyl]hydrazono]-4-imino-5-oxo-6-[[4-[4-[(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazono]cyclohexa-2,5-dien-1-ylidene]cyclohexa-2,5-dien-1-ylidene]hydrazono]naphthalene-2,7-disulfonic acid

This complex compound belongs to a class of compounds that often display intriguing properties and potential applications in various fields of science. Its structure suggests strong potential for interaction with biological systems, especially due to the presence of multiple functional groups that can engage in hydrogen bonding and coordination chemistry.

Key Features:

  • Dihydroxyamino Group: The presence of the dihydroxyamino moiety indicates potential redox activity, allowing the compound to act as an antioxidant or even participate in enzyme-like mechanisms.
  • Multiple Hydrazono Links: The hydrazono groups can contribute to the compound's ability to form chelates or engage in complexation reactions, which is significant in fields like coordination chemistry.
  • Naphthalene Structure: The naphthalene moiety provides a foundation for strong π-π stacking interactions, which can be essential for the compound's optical properties.
  • Application Potential: Due to its complex structure, this compound may have potential applications in dye chemistry, biological imaging, and even as a ligand in supramolecular chemistry.

Additionally, chemists often explore such compounds for their synthetic pathways. The construction of this type of compound usually involves multi-step processes that can yield fascinating insights into reaction mechanisms and methodologies. As one scholar insightfully said, "In the world of chemistry, complexity begets beauty and potential."

Research into compounds like this one can lead to innovative solutions across diverse fields, from material science to medicinal chemistry. Studying these intricate structures opens up new possibilities for developing effective materials and drugs.