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Direct Red 80

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Identification
Molecular formula
C32H24N6Na2O10S3
CAS number
2610-10-8
IUPAC name
7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonic acid
State
State

At room temperature, Direct Red 80 is a solid. It is typically handled as a powder for use in textile and paper dyeing processes.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
774.73g/mol
Molar mass
988.0500g/mol
Density
1.6200g/cm3
Appearence

Direct Red 80 is known for its vibrant red color. It typically appears as a reddish-brown powder that is used as a synthetic dye in various applications.

Comment on solubility

Solubility of 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonic acid

The solubility of 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonic acid is influenced by several key factors:

  • Polarity: The presence of multiple sulfonic acid groups contributes to a relatively high polarity, which generally enhances solubility in polar solvents such as water.
  • Hydrogen Bonding: The -OH group can engage in hydrogen bonding, further promoting solubility in aqueous solutions.
  • Complexation: The compound may form complexes with metal ions, which can also affect its solubility in various environments.
  • Ionization: At physiological pH or in alkaline conditions, the sulfonic acids may ionize, significantly increasing solubility in water.

Overall, while specific solubility data for this complex azo compound might be limited, it is expected to have good solubility in polar solvents due to its structural features that promote interaction with water molecules. As noted in solubility studies: “More polar functional groups correlate with increased solubility in aqueous media.” Thus, the predicted solubility behavior emphasizes the need for detailed experimentation to fully characterize its solubility profile across different conditions.

Interesting facts

Interesting Facts about 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonic acid

This compound is a fascinating member of the azo dye family, recognized for its complex structure and vibrant color properties. Here are some intriguing details that merit attention:

  • Color Properties: Azo compounds are renowned for their brilliant hues, ranging from deep reds to rich oranges. This particular compound showcases a remarkable ability to produce vibrant colors, which makes it indispensable in the dye industry.
  • Applications in Materials: Due to its striking color, this compound is frequently utilized in textile dyeing. It's also employed in the production of inks, plastics, and paints, helping manufacturers achieve the desired permanence and vividness.
  • Stability and Durability: The presence of sulfonic acid groups in the structure enhances its solubility and overall stability, making it suitable for various applications where longevity and resistance to fading are critical.
  • Environmental Impact: As with many synthetic dyes, there is growing concern regarding the environmental effects of azo dyes. Researchers are actively exploring methods to mitigate any potential toxicity and creating more environmentally friendly alternatives.
  • Structure-Activity Relationship: Chemists study the relationship between the molecular structure and the color properties of dyes. The intricate arrangement of functional groups in this compound is a key factor contributing to its distinctive shades and utility.

A quote that echoes through the halls of chemistry is, "The beauty of a dye is a reflection of its molecular architecture." This compound exemplifies that idea, showcasing how complex structures can yield stunning visual aesthetics through chemistry.

Overall, 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonic acid stands not only as a testament to the artistry of synthetic compounds but also as a reminder of the ongoing responsibilities chemists bear in understanding and mitigating the environmental impacts of chemical products.

Synonyms
DTXSID60859819
7-Hydroxy-8-{[4'-({4-[(4-methylbenzene-1-sulfonyl)oxy]phenyl}diazenyl)[1,1'-biphenyl]-4-yl]diazenyl}naphthalene-1,3-disulfonic acid