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Orange G

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Identification
Molecular formula
C16H10N2Na2O7S2
CAS number
1936-15-8
IUPAC name
3-[(2,4-dioxo-1H-quinolin-3-yl)azo]-4-hydroxy-5-nitro-benzenesulfonic acid
State
State

Orange G is typically found as a solid, crystalline powder at room temperature.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
792.00
Boiling point (Kelvin)
1 065.15
General information
Molecular weight
452.38g/mol
Molar mass
452.3790g/mol
Density
1.6000g/cm3
Appearence

Orange G is an orange powder that dissolves in water to produce an orange solution. It is often used in histology for staining as it provides a bright color, useful for contrast in microscopic images.

Comment on solubility

Solubility of 3-[(2,4-dioxo-1H-quinolin-3-yl)azo]-4-hydroxy-5-nitro-benzenesulfonic acid

The solubility of 3-[(2,4-dioxo-1H-quinolin-3-yl)azo]-4-hydroxy-5-nitro-benzenesulfonic acid can be influenced by various factors due to its complex structure. This compound, which contains multiple functional groups, generally exhibits the following solubility characteristics:

  • The presence of the benzenesulfonic acid moiety suggests it may have significant solubility in aqueous solutions, particularly in acidic or polar solvents.
  • Given the 4-hydroxy and 5-nitro functionalities, these groups may further enhance its interaction with water, indicating a level of hydrophilicity.
  • However, the larger quinoline structure might introduce hydrophobic characteristics, potentially decreasing solubility in non-polar solvents.

As a result, we can conclude:

  1. Aqueous solubility is likely moderate to high, particularly in acidic conditions.
  2. Non-polar solvents may exhibit significantly lower solubility.

To sum up, while this compound demonstrates a tendency towards aqueous solubility owing to its functional groups, it is essential to consider environmental parameters such as pH, temperature, and the presence of other solutes which can dramatically affect solubility outcomes.

Interesting facts

Interesting Facts about 3-[(2,4-dioxo-1H-quinolin-3-yl)azo]-4-hydroxy-5-nitro-benzenesulfonic acid

This fascinating compound is notable for its role in various chemical applications and research, particularly in the field of organic chemistry and azo dye synthesis. Here are some interesting insights:

  • Azo Dyes: The compound features an azo group (R-N=N-R'), which is a common motif in azo dyes, known for their vibrant colors. Azo compounds are utilized in industries for dyeing textiles, paper, and even food products.
  • Biological Activity: Research has suggested that similar quinoline-based compounds can exhibit significant antibacterial and antifungal properties. The presence of the quinoline moiety contributes to the bioactivity that could be valuable in medicinal chemistry.
  • Structure-Activity Relationship: The modified aromatic nature of the compound with hydroxy and nitro groups leads to interesting possibilities for structure-activity relationships (SAR). Scientists can predict how changes in substituents affect the compound's reactivity and biological effects.
  • Environmental Considerations: As azo compounds can degrade into amines, some variants are under scrutiny regarding their environmental impact. Understanding their stability and transformation in different conditions is crucial for safety assessments.
  • Analytical Chemistry Tool: Compounds like this one are often used in analytical methodologies, such as spectrophotometry, due to their distinct absorbance characteristics. Researchers can utilize these properties to quantify various substances in laboratory settings.

In summary, 3-[(2,4-dioxo-1H-quinolin-3-yl)azo]-4-hydroxy-5-nitro-benzenesulfonic acid embodies a unique blend of structure and function, serving as a subject of interest across various scientific disciplines. As you explore this compound further, remember to consider both its potential applications and implications for environmental health.

Synonyms
DTXSID30863923
3-[2-(2,4-Dioxo-1,2,3,4-tetrahydroquinolin-3-yl)hydrazinylidene]-5-nitro-4-oxocyclohexa-1,5-diene-1-sulfonic acid