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Orange G

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Identification
Molecular formula
C16H10N2O7S2
CAS number
1936-15-8
IUPAC name
2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid
State
State
At room temperature, Orange G is a solid, appearing as an orange powder or crystalline material.
Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
452.37g/mol
Molar mass
452.3700g/mol
Density
0.6700g/cm3
Appearence

Orange G is an orange powder or granules which is a water-soluble dye primarily used for staining applications in microscopy.

Comment on solubility

Solubility of 2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid

The solubility characteristics of 2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid are notably influenced by its structural attributes. As a sulfonic acid derivative, this compound tends to exhibit high solubility in polar solvents such as water due to the presence of multiple sulfonate groups.

Key factors determining its solubility include:

  • Polarity: The numerous polar functional groups (hydroxyl and sulfonate) enhance interactions with water molecules.
  • Ionic Nature: The sulfonate groups can dissociate, making the compound more soluble in aqueous solutions.
  • Temperature: Increasing temperature generally increases solubility for many organic compounds.

This compound's solubility is crucial for its applications, as it allows for better dispersion in aqueous environments, enhancing its effectiveness in various chemical processes. It is often noted that:

"The more polar a compound, the more likely it is to dissolve in a polar solvent."

In summary, the profound hydrophilic properties of 2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid due to its functional groups ensure its significant solubility in water, making it an important compound in chemistry and industry.

Interesting facts

Interesting Facts About 2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid

This compound is an intriguing example of a class of compounds known as azo dyes, characterized by the presence of the azo group (-N=N-). Azo compounds are widely recognized for their vibrant colors, making them essential in the textile, food, and cosmetic industries. Here are some impressive facts about this specific compound:

  • Color Chemistry: The rich color spectrum of azo dyes is attributable to the conjugated π-electron systems that are present in their structures. This compound, with its naphthalene and benzoic acid components, likely exhibits significant chromophoric properties.
  • Application in Dyes: Due to its disulfonic acid groups, this compound is particularly soluble in water, enhancing its utility as a dye in various industries. It is often used for dyeing textiles, providing vivid and lasting colors.
  • Functional Roles: The hydroxyl and sulfonyl groups not only contribute to solubility but also impact reactivity, making it valuable for biochemical applications, including the development of sensors and indicators.
  • Environmental Considerations: Azo dyes, including this compound, have raised environmental concerns due to the potential release of carcinogenic aromatic amines upon degradation, prompting ongoing research into safer alternatives and degradation pathways.
  • Historical Significance: Azo dyes have a rich history, dating back to the late 19th century. They revolutionized the dye industry, offering a wider range of colors than natural dyes.

One might say that azo dyes like 2-[(2-hydroxy-3,6-disulfo-1-naphthyl)azo]benzoic acid not only paint our materials with color but also tell a story of chemistry, commerce, and environmental consciousness. As chemistry students and scientists continue to explore their properties, such fascinating compounds remain at the forefront of research and innovation.

Synonyms
CHEMBL1270654
CBDivE_007972
CHEMBL2009763
SCHEMBL14418589
DTXSID10859682
BDBM50328748
NCI60_000574
NCI60_004124
2-[(2-Hydroxy-3,6-disulfonaphthalen-1-yl)diazenyl]benzoic acid
4-((2-carboxyphenyl)diazenyl)-3-hydroxynaphthalene-2,7-disulfonate