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Direct Red 23

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Identification
Molecular formula
C35H25N7O10S4
CAS number
3441-14-3
IUPAC name
5-amino-3-[4-[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid
State
State

At room temperature, Direct Red 23 is typically in a solid state. It is handled as a fine powder and should be stored in a cool, dry place to maintain its stability and prevent it from clumping due to moisture absorption.

Melting point (Celsius)
360.00
Melting point (Kelvin)
633.00
Boiling point (Celsius)
281.00
Boiling point (Kelvin)
554.00
General information
Molecular weight
960.80g/mol
Molar mass
960.8000g/mol
Density
1.3000g/cm3
Appearence

Direct Red 23 is commonly seen as a dark red to maroon-colored powder. It is a synthetic azo dye known for its intense red coloration, which is used prominently in dyeing textiles such as cotton and wool. The compound is known for its bright appearance and is typically in a powdered form.

Comment on solubility

Solubility of 5-amino-3-[4-[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid

The solubility of 5-amino-3-[4-[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid can be influenced by several key factors:

  • Polar Groups: The presence of multiple sulfonate groups typically enhances water solubility due to increased polarity.
  • Hydrogen Bonding: Functional groups like amino and hydroxy can participate in hydrogen bonding, which further facilitates solvation in aqueous environments.
  • Ionic Interactions: If dissolved in water, the compound might dissociate into its ionic forms, improving solubility due to electrostatic interactions with water molecules.
  • pH Sensitivity: The solubility may vary with changes in pH, as protonation and deprotonation can affect the overall charge and solubility of the molecule.

As a general observation, compounds such as this one, characterized by an extensive array of sulfonic and amino groups, tend to exhibit high solubility in polar solvents like water.

In summarizing, features that typically enhance solubility include:

  1. High number of polar functional groups
  2. Ability to form hydrogen bonds
  3. Presence of ionic charges

Thus, while this compound is expected to be highly soluble in aqueous solutions, *empirical testing* is essential to obtain quantitative solubility data.

Interesting facts

Interesting Facts about 5-amino-3-[4-[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid

5-amino-3-[4-[4-[(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]phenyl]phenyl]azo-4-hydroxy-naphthalene-2,7-disulfonic acid, commonly abbreviated as a dye compound in various applications, is a fascinating example of synthetic organic chemistry. This specifically structured compound belongs to the azo dye class, which is significant for its vibrant color and versatility.

Key Highlights:

  • Azo dye family: The compound features the azo group (-N=N-), known for its vibrant coloration. Azo dyes are widely used in coloring textiles, food, and even in biological staining applications.
  • Functional groups: Its structure includes multiple sulfonic acid groups, which enhance its solubility in water and make it effective for a range of applications in aqueous solutions.
  • Biological significance: Due to the presence of amino groups, this compound can be utilized in biological systems for various aspects, including as indicators in biochemical assays.
  • Synthetic utility: The complex synthesis pathway involved in creating this compound showcases the intricate balancing of chemistry needed to achieve desired functionality and stability.

The vibrant colors of such azo dyes are not only visually appealing but also play significant roles in industries ranging from textiles to food and beyond. As stated by industry chemists: "Azo dyes are the backbone of synthetic dyeing processes."

This compound exemplifies the intersection of chemistry and practical applications, representing endless possibilities for innovation in various fields. Its unique properties and applications make it a topic of interest for both students and seasoned chemists alike!

Synonyms
CHEMBL2010552
DTXSID90859746
NCI60_042144
Q51617477
3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(diazene-2,1-diyl)]bis(5-amino-4-hydroxynaphthalene-2,7-disulfonic acid)