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Carmine

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Identification
Molecular formula
C10H8NNa2O8S2
CAS number
1325-36-6
IUPAC name
disodium;4-amino-5-hydroxy-naphthalene-2,7-disulfonate
State
State

At room temperature, the compound is generally found in a solid state as a powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
458.00
Boiling point (Kelvin)
731.00
General information
Molecular weight
474.36g/mol
Molar mass
474.3600g/mol
Density
1.5700g/cm3
Appearence

The compound typically appears as a dark red to purple solid powder. It is often used as a dye, lending rich, vibrant hues to textiles and foods.

Comment on solubility

Solubility of Disodium 4-Amino-5-Hydroxy-Naphthalene-2,7-Disulfonate

Disodium 4-amino-5-hydroxy-naphthalene-2,7-disulfonate, also known as a dye intermediate, exhibits interesting solubility characteristics that are essential in various applications. Its solubility can be influenced by several factors:

  • Water Solubility: This compound is highly soluble in water, making it suitable for aqueous solutions. This property is crucial for its use in dyeing processes and biochemical applications.
  • pH Sensitivity: The solubility is also pH-dependent; it tends to dissolve better in alkaline conditions compared to acidic environments. A typical pH range for optimal solubility is from 6 to 8.
  • Temperature Influence: Increasing the temperature can enhance solubility, allowing for more efficient preparation of concentrated solutions when needed.
  • Interactions with Solvents: Aside from water, the compound may have limited solubility in organic solvents, which highlights its polar nature.

The ability of disodium 4-amino-5-hydroxy-naphthalene-2,7-disulfonate to remain dissolved in these conditions makes it an advantageous choice in various industrial applications.

As noted, "Solubility forms the basis for functionality," and understanding the solubility characteristics of this compound is crucial for optimizing its use in practical scenarios.

Interesting facts

Interesting Facts about Disodium 4-Amino-5-Hydroxy-Naphthalene-2,7-Disulfonate

Disodium 4-amino-5-hydroxy-naphthalene-2,7-disulfonate, commonly known as a dye reagent, is a fascinating compound with several noteworthy qualities:

  • Versatile Dye Reagent: This compound is especially renowned in the field of analytical chemistry. It acts as a key reagent for the detection of various metal ions, showcasing its utility in both industrial and laboratory settings.
  • Biological Significance: Due to its structural characteristics, disodium 4-amino-5-hydroxy-naphthalene-2,7-disulfonate plays a role in biological assays, enabling the study of enzyme interactions and markers in various biological processes.
  • Colorimetric Applications: This compound is frequently used in colorimetric methods, where it aids in creating vibrant colors that can be measured spectrophotometrically, making quantification more straightforward for scientists.
  • Environmental Monitoring: The use of this compound extends to environmental science, where it can help in monitoring pollutants and understanding chemical behaviors within ecosystems.
  • Research Potential: Recent studies are exploring innovative applications in pharmaceuticals, particularly in drug formulation and delivery, revealing its potential to improve therapeutic efficacy.

As a versatile compound, disodium 4-amino-5-hydroxy-naphthalene-2,7-disulfonate is much more than a dye reagent. It stands at the crossroads of chemistry, biology, and environmental science, offering numerous avenues for exploration and discovery.

In the words of a prominent chemist, “Chemistry is not just about molecules; it’s about the stories they tell.” This compound certainly tells a compelling story within the scientific community.

Synonyms
H Acid disodium salt
EINECS 223-566-2
Disodium 4-amino-5-hydroxy-2,7-naphthalenedisulfonate
Disodium 4-amino-5-hydroxynaphthalene-2,7-disulphonate
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, sodium salt (1:2)
223-566-2
3963-80-2
2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-5-HYDROXY-, DISODIUM SALT
disodium;4-amino-5-hydroxynaphthalene-2,7-disulfonate
EPI-0023
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid sodium salt
Sodium 4-Amino-5-hydroxy-2,7-naphthalenedisulfonate
5460-09-3
C10H7NNa2O7S2
SCHEMBL3100229
DTXSID9063247
SB83519
NS00083966
SODIUM 4-AMINO-5-HYDROXYNAPHTHALENE-2,7-DISULFONATE
SODIUM4-AMINO-5-HYDROXYNAPHTHALENE-2,7-DISULFONATE