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Reactive Red 195

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Identification
Molecular formula
C31H19N7Na3O11S3
CAS number
93050-79-4
IUPAC name
4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfo-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonic acid
State
State

At room temperature, Reactive Red 195 is a solid in the form of a powder or granules. It is stable under normal conditions but should be kept dry to maintain its intended reactivity properties.

Melting point (Celsius)
250.00
Melting point (Kelvin)
523.15
Boiling point (Celsius)
300.00
Boiling point (Kelvin)
573.15
General information
Molecular weight
1136.33g/mol
Molar mass
1 136.3300g/mol
Density
1.6800g/cm3
Appearence

Reactive Red 195 is a red azo dye that appears as a dark reddish powder. It is known for its vibrant red coloration and is commonly used in textile dyeing. The pure compound is typically handled as a dark solid that may clump together if not properly stored.

Comment on solubility

Solubility of 4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfo-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonic acid

The solubility of this complex compound is influenced by its unique chemical structure, which includes multiple functional groups that enhance its interaction with solvents.

Factors Affecting Solubility:

  • Hydrophilicity: The presence of sulfonic acid groups can significantly increase polarity and enhance aqueous solubility.
  • Hydrophobic Character: The naphthalene and phenylazo moieties contribute hydrophobic characteristics, that may limit solubility in polar solvents.
  • Intermolecular Interactions: Ability to form hydrogen bonds with water can further influence solubility positively.

Generally, one can expect this compound to have increased solubility in polar solvents such as water, especially at elevated temperatures, due to these interactions. It can exhibit variable solubility based on:

  1. pH Levels: The ionization state of the sulfonic acid group affects solubility in aqueous solutions.
  2. Concentration of Salts: The presence of salts in the solution may decrease its solubility due to common ion effects.

In conclusion, while 4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfo-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonic acid is generally considered to be soluble in water, the degree of solubility can be influenced by factors such as pH and the presence of other solutes, making it crucial to consider the specific conditions when evaluating its solubility.

Interesting facts

Interesting Facts about 4-hydroxy-6-[(5-hydroxy-6-phenylazo-7-sulfo-2-naphthyl)carbamoylamino]-3-[4-(2-oxoethylamino)phenyl]azo-naphthalene-2-sulfonic acid

This compound, often referred to in the field of dye chemistry, showcases a fascinating structure that combines various functional groups, making it a remarkable example of azo dyes. Azo compounds are known for their vibrant colors, which is largely due to the presence of the azo (-N=N-) group.

Key Characteristics

  • Colorfulness: The incorporation of azo linkages gives rise to striking colors, which are commonly used in textiles and food coloring.
  • Biological Activity: Some azo dyes have been studied for their potential biological activities, raising interest in their applications in pharmacology.
  • Environmental Concerns: Azo dyes can be a concern for environmental pollution; hence, research is ongoing into safer alternatives and methods for their breakdown.

In the context of organic synthesis, this compound exemplifies the complexity of synthesizing azo dyes, where multiple steps are required to install each functional group. The compound's sulfonic acid groups enhance its solubility in water, thus rendering it useful in aqueous solutions.

As scientists study this compound, they often reflect on the historical significance of azo dyes:

"With the advent of synthetic dyes in the 19th century, azo dyes changed the landscape of textile coloration."

Overall, understanding compounds like this one not only deepens our knowledge of organic chemistry but also highlights the intersection of chemistry with environmental science and industrial applications. The future of such compounds lies in sustainable production methods and engineered properties for diverse applications.