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Orange G

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Identification
Molecular formula
C16H10ClN3O4S
CAS number
1936-15-8
IUPAC name
4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid
State
State

Orange G is generally found in a solid state at room temperature. It is stable under normal conditions and is used extensively in laboratory settings due to its non-volatile nature.

Melting point (Celsius)
290.00
Melting point (Kelvin)
563.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
452.82g/mol
Molar mass
452.8170g/mol
Density
0.9002g/cm3
Appearence

Orange G is an azo dye that typically appears as an orange to red powder. It is often used in dyeing applications and biological staining techniques.

Comment on solubility

Solubility of 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid

The solubility of 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid can be characterized by several important factors:

  • Polarity: The presence of both the sulfonic acid group (–SO3H) and hydroxyl group (–OH) contributes to the polarity of this compound, enhancing its ability to interact with polar solvents, particularly water.
  • Hydrogen Bonding: This compound can form hydrogen bonds due to the hydroxyl and sulfonic acid groups, which generally increases solubility in polar solvents.
  • Aqueous Solubility: Given its functional groups, 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid is expected to be soluble in water, although the exact solubility can vary with concentration and temperature.

In summary, it is often described that compounds with aromatic structures and polar functional groups have enhanced solubility in water, and this is true for our compound as well. Thus, it can be anticipated that it exhibits notable solubility properties in aqueous environments, making it versatile for various applications.

Interesting facts

Interesting Facts about 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid

This compound, often referred to in the industry as an azo dye, is renowned for its vivid color and versatility in various applications. Here are some captivating insights into its unique properties and uses:

  • Dye Production: A significant application of this compound lies in dye manufacturing. Its vibrant coloration enables its use in textiles, food, and even cosmetics.
  • Environmental Impact: While azo dyes, including this one, provide aesthetic benefits, some concerns are raised about their environmental degradability. Certain azo compounds can produce aromatic amines, which may be harmful.
  • Analytical Chemistry: This compound can serve as a marker in analytical chemistry, aiding in the detection of related substances due to its distinct color change properties.
  • Structure and Function: The presence of the azo group (–N=N–) is crucial for the compound's coloration. This functional group is fundamental in a variety of dye mechanisms.
  • Historical Significance: Azo dyes have a rich history, with some of the earliest examples dating back to the mid-19th century when they transformed the dye industry by enabling vivid, stable colors.

Moreover, this compound's functional groups (like the sulfonic acid group) not only contribute to its solubility in water but also enhance its reactivity, making it a notable subject of study in both organic chemistry and industrial applications. As researchers continue to explore the properties of azo dyes, compounds like this one remain at the forefront of discussions related to sustainability and safe dyeing practices.

In conclusion, 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonic acid stands out as a remarkable example of how chemistry intersects with industry, art, and environmental responsibility.

Synonyms
SCHEMBL92165
SCHEMBL345186
DTXSID20868265
NS00040961
4-Chloro-5-methyl-2-[2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]benzene-1-sulfonic acid