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C.I. Acid Red 97

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Identification
Molecular formula
C32H24N6O7S2
CAS number
10169-02-5
IUPAC name
3-[[4-[4-(4-hydroxyphenyl)azophenyl]phenyl]hydrazono]-4-imino-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonic acid
State
State

The compound is commonly found in solid form at room temperature.

Melting point (Celsius)
230.00
Melting point (Kelvin)
503.15
Boiling point (Celsius)
475.00
Boiling point (Kelvin)
748.15
General information
Molecular weight
650.68g/mol
Molar mass
650.6750g/mol
Density
1.3500g/cm3
Appearence

C.I. Acid Red 97 typically appears as a red crystalline powder. It is known for its vibrant color, which makes it useful as a dye in various applications.

Comment on solubility

Solubility of 3-[[4-[4-(4-hydroxyphenyl)azophenyl]phenyl]hydrazono]-4-imino-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonic acid

The solubility of this complex compound is influenced by multiple factors due to its intricate structure, particularly its sulfonic acid groups which enhance its solubility in aqueous environments. Here are some key points to consider:

  • Aqueous Solubility: The presence of multiple sulfonic acid groups typically enhances water solubility by allowing for hydrogen bonding and ion-dipole interactions with water molecules.
  • Organic Solubility: While it may dissolve in organic solvents to a certain extent, the polar nature induced by the sulfonic acid groups can limit solubility in non-polar solvents.
  • pH Influence: The solubility may vary significantly with changes in pH, as deprotonation of the sulfonic acid groups can lead to increased solubility in basic conditions.
  • Temperature Effects: Higher temperatures usually increase solubility; thus, heating the solution might assist in dissolving the compound more effectively.

In conclusion, while this compound shows a higher tendency to be soluble in water due to its ionic character, the specific conditions such as pH and temperature can greatly affect its overall solubility profile. Understanding these parameters is crucial when handling or utilizing this compound in chemical applications.

Interesting facts

3-[[4-[4-(4-hydroxyphenyl)azophenyl]phenyl]hydrazono]-4-imino-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonic acid

This fascinating compound is a member of the azo dye family, known for its vibrant colors and significant applications in various industries. Azo dyes are characterized by the presence of one or more azo groups (−N=N−), which provide them with striking hues that can be utilized in textiles and food coloration.

Here are some interesting facts about this specific compound:

  • Chemical Structure: The compound contains multiple functional groups, including hydrazono and sulfonic acid groups, contributing to its chemical reactivity and solubility properties.
  • Applications: Azo dyes like this one are widely employed in the dyeing of fabrics, leather, and even for some food products, making them an integral part of industrial processes.
  • Historical Significance: The development of azo dyes revolutionized the dyeing industry in the 19th century, providing a vast range of colors that were previously unavailable with natural dyes.
  • Toxicological Aspects: It's essential to note that some azo dyes have been under scrutiny due to potential health risks, which have prompted regulatory measures in food and textile applications.

"The chemistry of dyes is a spectrum of color and creativity, with each compound offering a unique story and application."

In summary, this compound exemplifies the interplay between chemical structure and functional utility, reflecting broader trends in materials science, environmental health, and industrial application. Understanding such compounds not only enhances our knowledge of chemical properties but also informs practices across numerous fields.