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Orange G

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Identification
Molecular formula
C16H10ClN2NaO4S
CAS number
1936-15-8
IUPAC name
sodium;4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate
State
State

At room temperature, Orange G is a solid, existing as a crystalline orange powder that can dissolve in water to form a vivid orange solution.

Melting point (Celsius)
267.00
Melting point (Kelvin)
540.15
Boiling point (Celsius)
298.00
Boiling point (Kelvin)
571.15
General information
Molecular weight
452.38g/mol
Molar mass
452.3790g/mol
Density
1.3365g/cm3
Appearence

Orange G is typically an orange powder that is water-soluble. It is used as a dye for various purposes, including in histology to stain plasma in trichrome stains and as an acid dye with applications in textiles.

Comment on solubility

Solubility of Sodium 4-Chloro-2-[(2-Hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate

The compound sodium 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate, often used as a dye, exhibits interesting solubility characteristics. Its solubility can be influenced by various factors, including:

  • Polarity: The presence of sulfonate groups generally increases the compound's polarity, making it more soluble in polar solvents such as water.
  • pH Levels: The solubility can vary with changes in pH. Under alkaline conditions, the solubility may increase as the sulfonate group remains ionized.
  • Temperature: As with many salts, higher temperatures can enhance solubility, allowing more of the compound to dissolve in solution.

Moreover, aqueous solubility is a critical attribute for its application in various fields, especially in dye chemistry and biological applications. In general, compounds with functional groups such as sulfonates and hydroxyls tend to favorably interact with water molecules, promoting their dissolution.

In summary, sodium 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate is soluble in water, prominently influenced by its ionic nature and the surrounding conditions. This solubility profile is crucial for its functional applications in different settings.

Interesting facts

Interesting Facts about Sodium 4-Chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate

Sodium 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate is a fascinating compound with significant applications in various fields. Here are some intriguing points about this versatile chemical:

  • Dye Properties: This compound is primarily known for its use as a dye. Its azo structure makes it particularly effective for creating vibrant colors in textiles and other materials.
  • Analytical Uses: It is often utilized in analytical chemistry, especially in the identification and quantification of metals. Azo compounds are known for their ability to form complexes with various metal ions, making them valuable in colorimetric assays.
  • Environmental Considerations: Due to the presence of chlorine in its structure, the compound can have potential environmental impacts. Researchers are constantly studying azo dyes for their biodegradability and toxicity to ensure safe disposal and use.
  • Versatility: Beyond dyes, derivatives of this compound find applications in various industries, including cosmetics and pharmaceuticals, highlighting its chemical versatility.
  • Historical Importance: Azo dyes, including this compound, have been historically significant since their introduction in the late 19th century, revolutionizing the dye industry.

In summary, sodium 4-chloro-2-[(2-hydroxy-1-naphthyl)azo]-5-methyl-benzenesulfonate embodies the intersection of chemistry and industry, offering broad applications while posing important questions for environmental sustainability. As we continue to innovate, understanding compounds like this helps pave the way for more responsible use of chemical technologies.