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Carmoisine

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Identification
Molecular formula
C20H12N2Na2O7S2
CAS number
3567-69-9
IUPAC name
disodium;4-amino-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-1-sulfonate
State
State

State at Room Temperature: Carmoisine is typically found as a solid powder at room temperature.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
300.00
Boiling point (Kelvin)
573.15
General information
Molecular weight
502.43g/mol
Molar mass
502.4340g/mol
Density
1.2400g/cm3
Appearence

Carmoisine typically appears as a red to maroon powder. It can create a deep red to maroon color in solutions, commonly used in food products.

Comment on solubility

Solubility of Disodium; 4-Amino-3-[4-[4-[(1-Hydroxy-4-Sulfonato-2-Naphthyl)Azo]-3-Methoxy-Phenyl]-2-Methoxy-Phenyl]Azo-Naphthalene-1-Sulfonate

The solubility of this compound is significantly influenced by its chemical structure and the presence of functional groups. Here are some key points to consider:

  • Water Solubility: Due to the presence of sulfonate groups, this compound exhibits high solubility in water, which is typical for many ionic compounds.
  • Organic Solvents: It is less soluble in nonpolar organic solvents due to its polar nature, which discourages interaction with nonpolar molecules.
  • pH Dependency: The solubility can be influenced by the pH of the solution. For instance, increased acidity could enhance solubility due to protonation of amino groups, while increased alkalinity might lead to precipitation of insoluble forms.
  • Temperature Effect: Like many substances, solubility tends to increase with temperature, allowing for higher concentrations in solution.
  • Complex Formation: This compound may interact with other ions in solution, leading to complex formation that could either enhance or hinder its overall solubility.

In summary, the solubility of Disodium; 4-Amino-3-[4-[4-[(1-Hydroxy-4-Sulfonato-2-Naphthyl)Azo]-3-Methoxy-Phenyl]-2-Methoxy-Phenyl]Azo-Naphthalene-1-Sulfonate is primarily influenced by its ionic characteristics, functional groups, pH, and temperature, making it a compound of interest in various aqueous and biological applications.

Interesting facts

Interesting Facts about Disodium 4-Amino-3-[4-[4-[(1-Hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-Naphthalene-1-Sulfonate

This compound is a fascinating example of a dye used in various applications, particularly in the fields of analytical chemistry and staining processes. Here are some captivating insights about it:

  • Color Vibrancy: This compound belongs to a class of azo dyes, known for their vivid and diverse color range, which is often utilized in textiles, inks, and food products.
  • Staining Power: Often used as a biological stain in microscopy, its capability to easily bind with proteins and cells makes it an essential tool in histological studies.
  • Structure Complexity: The intricate structure of this compound includes multiple naphthalene rings and sulfonate groups, contributing to its excellent solubility and stability in various media.
  • Environmental Considerations: Like many azo dyes, there is ongoing research to assess the environmental impact and potential toxicity of its breakdown products, emphasizing the need for safe chemical practices.
  • Historical Significance: Azo compounds have a long history, first developed in the early 19th century, and they remain critical in dye production and research today.

As we uncover the remarkable properties and uses of disodium 4-amino-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-1-sulfonate, it becomes clear that its versatility extends beyond merely adding color; it plays a significant role in scientific innovation and discovery.

Synonyms
C.I. DIRECT VIOLET 32
Direct Violet 32
6428-94-0
CCRIS 4636
C.I. 24105
DTXSID3025205
1-Naphthalenesulfonic acid, 4-amino-3-((4'-((1-hydroxy-4-sulfo-2-naphthyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-, disodium salt
1-Naphthalenesulfonic acid, 4-amino-3-[2-[4'-[2-(1-hydroxy-4-sulfo-2-naphthalenyl)diazenyl]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)
1-Naphthalenesulfonic acid, 4-amino-3-(2-(4'-(2-(1-hydroxy-4-sulfo-2-naphthalenyl)diazenyl)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)diazenyl)-, sodium salt (1:2)
DIAPHTAMINE VIOLET NW
DTXCID001507934
C.I. Direct Violet 32, disodium salt
C.I. DIRECT VIOLET 32 DISODIUM SALT
4-AMINO-3-((4'-((1-HYDROXY-4-SULFO-2-NAPHTHALENYL)AZO)-3,3'-DIMETHOXY(1,1'-BIPHENYL)-4-YL)AZO)-1-NAPHTHALENESULFONIC ACID DISODIUM SALT
613-564-3
XP4MM652HS
CI Direct Violet 32
UNII-XP4MM652HS
SCHEMBL1352715
CI 24105
1-Naphthalenesulfonic acid, 4-amino-3-[[4'-[(1-hydroxy-4-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-, disodium salt
Disodium 4-amino-3-((4'-((1-hydroxy-4-sulfo-2-naphthyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-1-naphthalenesulfonate