Skip to main content

Orange G

ADVERTISEMENT
Identification
Molecular formula
C16H10N2Na2O7S2
CAS number
1936-15-8
IUPAC name
4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid
State
State

At room temperature, Orange G is a solid. It is typically available as a powder and used predominantly in aqueous solutions. The solid form makes it easy to transport, store, and handle in laboratory environments.

Melting point (Celsius)
267.00
Melting point (Kelvin)
540.00
Boiling point (Celsius)
600.00
Boiling point (Kelvin)
873.00
General information
Molecular weight
452.38g/mol
Molar mass
452.3760g/mol
Density
1.5580g/cm3
Appearence

Orange G is an organic compound that appears as an orange to reddish-orange crystalline powder. It is commonly used as a dye and has a vibrant color, making it useful in staining procedures. The compound is soluble in water, providing a bright orange solution.

Comment on solubility

Solubility of 4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid

The solubility of 4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid can be influenced by various factors, which are crucial for its applications, especially in dye chemistry and analytical techniques. Here are some key points regarding its solubility:

  • Solvent Dependency: This compound is typically more soluble in polar solvents such as water and alcohol, due to the presence of sulfonic acid and hydroxyl groups that can form hydrogen bonds.
  • pH Influence: The solubility may vary with pH; at lower pH values (acidic conditions), the sulfonic acid group remains protonated, potentially increasing solubility.
  • Temperature Effects: Generally, increasing temperature can enhance solubility for many compounds, promoting better dissolution.
  • Concentration Factors: High concentrations of this compound in solution could lead to aggregation or precipitation, depending on the conditions and other solutes present.
  • Structural Considerations: The bulky naphthyl group may impede solubility in certain organic solvents, while simultaneously enhancing solubility in others through favorable interactions.

Overall, the solubility characteristics of 4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid underline the importance of context, including solvent choice, pH levels, and temperature. It is always recommended to conduct empirical solubility tests under specific conditions for optimal results.

Interesting facts

Interesting Facts About 4-[(2-Hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid

This compound is a vibrant member of the azo dye family, often characterized by its distinctive bright colors. Azo compounds, including 4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid, are known for their wide applicability in various industries due to their stability and vivid coloration. Here are some key points that highlight the significance and interesting traits of this compound:

  • Dyes and Pigments: It is predominantly utilized in the production of dyes, playing a pivotal role in the textile, food, and cosmetic industries. Its ability to impart color makes it a valuable compound.
  • pH Indicator: The compound exhibits properties that allow it to function as a pH indicator, showing different colors at various pH levels, which makes it useful in analytical chemistry.
  • Link to Naphthol: The structure features a naphthol derivative, which enhances its dyeing properties and makes it effective in forming colored complexes with metals.
  • Biological Activity: Some studies indicate that azo compounds may have biological implications, which have prompted further research into their potential use in pharmaceuticals.
  • Environmental Considerations: As with many azo dyes, this compound's environmental impact is an area of concern, as it can degrade into harmful substances under certain conditions.

As a chemist or student of chemistry, exploring the structural design and functional uses of this compound can lead to a deeper understanding of both organic synthesis and the broader implications of chemical materials in society. It embodies the intersection of art and science—where vivid colors meet chemical engineering!

In conclusion, 4-[(2-hydroxy-1-naphthyl)azo]-3-methyl-benzenesulfonic acid serves not only as an important industrial compound but also as a ticket to explore the intricate relationship between chemistry and its applications in everyday life.

Synonyms
Acid Orange 8 free acid
18524-46-4
4-[(2-hydroxy-1-naphthyl)azo]-m-toluenesulphonic acid
C.I. Acid Orange 8, parent
I1OO79801K
4-((2-Hydroxy-1-naphthyl)azo)-m-toluenesulphonic acid
4-[(2-hydroxynaphthalen-1-yl)diazenyl]-3-methylbenzenesulfonic acid
EINECS 242-397-5
UNII-I1OO79801K
4-((2-Hydroxynaphthalen-1-yl)diazenyl)-3-methylbenzenesulfonic acid
4-[(2-Hydroxy-1-naphthyl)azo]-m-toluenesulfonic acid
SCHEMBL5160460
CHEMBL2009871
DTXSID0048002
SCHEMBL12955458
DTXSID00859934
FEACTMUAXQJDBH-UHFFFAOYSA-N
NCI60_004249
1-(2'-methyl-4'-sulfophenylazo)2-naphthol
1-(2'-METHYL-4'-SULFOPHENYLAZO)-2-NAPHTHOL
Q27280254
4-(2-HYDROXY-1-NAPHTHYLAZO)-M-TOLUENESULFONIC ACID
M-TOLUENESULFONIC ACID, 4-((2-HYDROXY-1-NAPHTHYL)AZO)-
4-[(2-Hydroxynaphthalen-1-yl)diazenyl]-3-methylbenzene-1-sulfonic acid
BENZENESULFONIC ACID, 4-((2-HYDROXY-1-NAPHTHALENYL)AZO)-3-METHYL-
BENZENESULFONIC ACID, 4-(2-(2-HYDROXY-1-NAPHTHALENYL)DIAZENYL)-3-METHYL-