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Carmoisine

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Identification
Molecular formula
C18H12N2Na2O7S2
CAS number
3567-69-9
IUPAC name
disodium;4-amino-3-hydroxy-naphthalene-2,7-disulfonate
State
State

At room temperature, carmoisine exists in a solid state, typically in powder or granule form. It is stable under normal conditions but should be kept dry to prevent degradation.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
502.43g/mol
Molar mass
512.4360g/mol
Density
1.7200g/cm3
Appearence

The compound appears as a red to maroon powder or granules. It is often used as a dye in food and textile industries, contributing to its recognizable deep red color.

Comment on solubility

Solubility of Disodium 4-Amino-3-Hydroxy-Naphthalene-2,7-Disulfonate

Disodium 4-amino-3-hydroxy-naphthalene-2,7-disulfonate, with its complex structure, exhibits notable solubility characteristics that are essential for its applications. This compound is known for its ability to dissolve readily in water due to the presence of multiple sulfonate groups, which enhance its ionic character. Here are some key points regarding its solubility:

  • High Water Solubility: The disodium salt form significantly increases solubility in aqueous solutions, making it versatile for various chemical processes.
  • pH Dependency: Solubility may vary with changes in pH; typically, this compound is more soluble in alkaline conditions compared to acidic ones.
  • Thermal Stability: Solubility can be influenced by temperature, generally increasing at higher temperatures.
  • Interaction with Solvents: While water is the primary solvent, solubility in organic solvents is limited, highlighting its hydrophilic nature.

In summary, the solubility behavior of disodium 4-amino-3-hydroxy-naphthalene-2,7-disulfonate is a crucial factor that impacts its functionality in various applications, from dye chemistry to biological studies. Understanding this solubility can help in optimizing its use in chemical formulations and research.

Interesting facts

Interesting Facts about Disodium 4-Amino-3-Hydroxy-Naphthalene-2,7-Disulfonate

Disodium 4-Amino-3-Hydroxy-Naphthalene-2,7-Disulfonate is a fascinating compound often referred to as "an important dye intermediate". This compound holds great significance in various scientific and industrial applications.

Key Applications

  • Dye Production: It is primarily utilized in the synthesis of azo dyes, which have vibrant hues and are widely used in textiles.
  • Biological Studies: The compound serves as a marker in biochemical experiments, helping researchers track biochemical pathways.
  • Analytical Chemistry: Its unique properties make it useful in spectroscopic applications, aiding in the detection and quantification of various substances.

Chemical Properties

This compound is remarkable for its structure and functional groups, which contribute to its reactive capabilities and interactions. Here are a few noteworthy properties:

  • The presence of both amino and hydroxy groups enhances its reactivity, making it a versatile intermediate in organic synthesis.
  • With two sulfonate groups, it benefits from increased water solubility, which is crucial for its applications in dyeing processes.

Safety and Handling

While working with this compound, it is essential to adhere to standard safety protocols:

  • Always wear appropriate personal protective equipment (PPE) to prevent skin and eye contact.
  • Ensure proper ventilation in the working area to mitigate inhalation risks of powdered forms.

In summary, disodium 4-amino-3-hydroxy-naphthalene-2,7-disulfonate is not merely a compound but a gateway to advancing dye chemistry and biochemical research. As one scientist put it, "The versatility of this compound opens new avenues in both practical applications and theoretical studies."

Synonyms
Disodium 4-amino-3-hydroxy-2,7-naphthalenedisulfonate
42579-07-7
1-Amino-2-naphthol-3,6-disulfonic acid sodium salt
1-Amino-2-naphthol-3,6-disulfonic acid disodium salt
A6I8ZBA730
2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-3-HYDROXY-, DISODIUM SALT
disodium 1-amino-2-naphthol-3,6-disulfonate
SCHEMBL8100903
WWKQYOVTXCEQDS-UHFFFAOYSA-L
Sodium 4-amino-3-hydroxynaphthalene-2,7-disulfonate
Q27273695
4-amino-3-hydroxynaphthalene-2,7-disulfonic acid disodium salt
2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-3-HYDROXY-, SODIUM SALT (1:2)