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Orange G

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Identification
Molecular formula
C16H10N2NaO7S
CAS number
1936-15-8
IUPAC name
sodium;4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate
State
State

At room temperature, Orange G exists as a solid. It is stable under normal conditions and is typically stored as a dry powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
305.00
Boiling point (Kelvin)
578.15
General information
Molecular weight
452.37g/mol
Molar mass
452.3660g/mol
Density
1.6500g/cm3
Appearence

Orange G appears as an orange to brown solid powder. It is a synthetic azo dye commonly used in textile and biological staining applications. The color can vary slightly depending on concentration and specific formulation.

Comment on solubility

Solubility Characteristics

The compound sodium 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate, commonly referred to as a dye, exhibits interesting solubility properties in various environments. Understanding its solubility is crucial for applications in analytical chemistry and dye manufacturing.

Solubility in Different Liquids

  • Water: This compound is generally highly soluble in water due to its sulfonate group, which enhances its polarity and ability to interact with water molecules.
  • Organic Solvents: It has limited solubility in non-polar organic solvents. This is primarily because the hydrophobic naphthalene rings do not interact favorably with non-polar compounds.

As a result, its solubility can often be summarized as:

  1. **High solubility in polar solvents (like water)**
  2. **Low solubility in non-polar solvents**

When considering its practical applications:

  • The solubility in water allows for easy application in various aqueous processes.
  • Its performance in different pH levels can also alter its solubility, making it effective for specific dyeing processes.

In summary, sodium 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate is a fascinating compound with enhanced solubility in water, making it valuable in many chemical applications.

Interesting facts

Interesting Facts about Sodium 4-[(2-Hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate

This compound, a fascinating member of the azo dye family, is most commonly referred to as "Sodium Dyes." It exhibits vibrant colors due to its unique naphthalene-based structure which incorporates azo and nitro functional groups, making it highly significant in various applications.

Key Characteristics:

  • Colorful Chemistry: Azo compounds are well-known for their vivid colors, which can be attributed to their conjugated systems allowing extensive electron delocalization.
  • Applications: This compound is used in textiles, food coloring, and biological staining due to its excellent dye properties, showcasing the intersection of chemistry and practical applications.
  • Photostability: Such dyes generally exhibit remarkable photostability, making them suitable for applications that require resistance to fading and degradation when exposed to light.

Scientific Significance:

One interesting fact about Sodium 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate is its role in chemical research. It is often utilized as a:

  • Chromogenic agent in assays, helping in the detection of various analytes.
  • Biological tracer in experimental studies due to its ability to bind to certain molecules and fluoresce under specific conditions.

In summary, Sodium 4-[(2-hydroxy-1-naphthyl)azo]-7-nitro-naphthalene-1-sulfonate serves as a prime example of how color and chemistry can combine to create practical solutions in research and industry.

Its presence in diverse fields highlights the multifaceted nature of chemical compounds and their impactful roles in society.

Synonyms
Sodium 3-hydroxy-4-((2-hydroxynaphthyl)azo)-7-nitronaphthalene-1-sulphonate
Sodium 3-hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonate
222-807-9
C.I. Mordant Black 1 (VAN)
EINECS 222-807-9
NSC 73413
D90464
sodium 4-[2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]-7-nitronaphthalene-1-sulfonate
sodium;4-[(2-hydroxynaphthalen-1-yl)diazenyl]-7-nitronaphthalene-1-sulfonate