Skip to main content

Carmoisine

ADVERTISEMENT
Identification
Molecular formula
C20H12N2Na2O7S2
CAS number
3567-69-9
IUPAC name
disodium;4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate
State
State

At room temperature, carmoisine is typically found in a solid state in the form of a powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
400.00
Boiling point (Kelvin)
673.15
General information
Molecular weight
502.43g/mol
Molar mass
502.4320g/mol
Density
1.6000g/cm3
Appearence

Carmoisine is a synthetic red dye, commonly appearing as a reddish-brown powder. It has vibrant red coloration when dissolved.

Comment on solubility

Solubility of Disodium 4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate

Disodium 4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate is a fascinating compound, particularly in terms of its solubility characteristics. This compound, like many azo dyes, displays a notable aqueous solubility due to its ionic nature resulting from the disodium groups present in its structure.

When considering its solubility, several key points emerge:

  • High Solubility in Water: The presence of two sodium ions enhances its solubility in water, making it readily dissolvable in aqueous solutions.
  • Influence of pH: The solubility may vary with changes in pH; typically, an increase in pH can lead to a greater degree of ionization, thereby improving solubility.
  • Temperature Dependence: Higher temperatures generally increase the solubility of organic compounds, thus warming the solution can be beneficial.
  • Solvent Considerations: It is less soluble in non-polar solvents due to its polar nature, which favors solvation by polar solvents like water.

In summary, the solubility of disodium 4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate is primarily influenced by its ionic character, environmental conditions such as pH and temperature, and the polarity of the solvent used. Understanding these factors can be important for practical applications involving this compound.

Interesting facts

Interesting Facts About Disodium 4-(2,4-Dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate

Disodium 4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate, often referred to as a dye compound, exhibits a myriad of fascinating properties and applications. Below are some noteworthy aspects:

  • Colorant Applications: This compound is particularly known for its vibrant color, making it a popular choice in the textile industry for dyeing fabrics.
  • Analytical Uses: It is used in analytical chemistry as a colorimetric reagent, allowing scientists to detect and quantify various substances in a sample.
  • Environmental Considerations: Research is ongoing into the environmental impacts of azo dyes. Some studies suggest that certain azo compounds can be toxic, highlighting the importance of sustainable practices in their usage.
  • Structural Complexity: The compound’s structure, characterized by azo (-N=N-) and sulfonate groups, contributes to its unique chemical behavior and interactions.
  • Historical Significance: Azo dyes have a long history in chemistry, with roots dating back to the 19th century, reflecting the evolution of synthetic dyes in industrial and commercial applications.

As stated by renowned chemists, “The beauty of azo compounds lies in their rich colors and the complexity of their chemical properties.” This compound exemplifies the intersection of art and science, showcasing not only the aesthetic appeal of colors but also the intricate chemistry that underpins their use.

In summary, disodium 4-(2,4-dimethylphenyl)azo-3-hydroxy-naphthalene-2,6-disulfonate is a striking example of how chemical compounds play a pivotal role in both industrial applications and scientific research.

Synonyms
Disodium;4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,6-disulfonate
disodium 4-[(E)-(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,6-disulfonate
SCHEMBL133302
SCHEMBL1637104
DTXSID8021228
OIQRYZXXBZHDRY-NNIZZXHBSA-L
C.I. 16150,
D91977