Skip to main content

Sodium naphthol yellow S

ADVERTISEMENT
Identification
Molecular formula
C16H11N2NaO4S
CAS number
846-70-8
IUPAC name
sodium;4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate
State
State

At room temperature, sodium naphthol yellow S exists as a solid powder.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
400.00
Boiling point (Kelvin)
673.15
General information
Molecular weight
350.32g/mol
Molar mass
350.3200g/mol
Density
1.6954g/cm3
Appearence

Sodium naphthol yellow S is an orange to yellow powder dependent on the conditions of use. It is often used as a dye, displaying vibrant colors in solutions.

Comment on solubility

Solubility of Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate

Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate, commonly referred to as a sodium salt of an azo compound, exhibits notable solubility characteristics that are important for its applications in various fields such as dyes and pigments.

The solubility of this compound can be attributed to several key factors:

  • Ionic Nature: Being a sodium salt, it is highly soluble in water due to the ionic interactions with water molecules, which effectively separate the ions in solution.
  • Hydroxyl Group: The presence of the hydroxyl group (-OH) enhances solubility in polar solvents, particularly water, by promoting hydrogen bonding.
  • Aromatic Structure: The aromatic moieties can lead to some hydrophobic interactions; however, the overall effect is typically overshadowed by the ionic and polar attributes of the compound.

As a result, one might typically expect the following solubility behavior:

  • Highly Soluble in Water: This compound dissolves readily in aqueous solutions, making it useful for applications requiring displacement in aqueous media.
  • Limited Solubility in Organic Solvents: While it shows good solubility in water, its solubility in non-polar organic solvents is considerably lower.

In summary, the solubility of sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate is predominantly influenced by its ionic nature and functional groups present in its structure. This solubility profile is crucial for its effective use in chemical formulations, where solubility can dictate product performance and stability.

Interesting facts

Interesting Facts about Sodium; 4-[(2-Hydroxy-1-naphthyl)azo]benzenesulfonate

Sodium; 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate is a fascinating compound that plays a significant role in various applications, particularly in the fields of chemistry and biology. Here are some captivating aspects of this compound:

  • Dye Properties: This compound is primarily known for its vibrant color properties. It is commonly used as a dye in various industries, including textiles and food, giving products rich hues while being relatively safe for use.
  • Indicator in Analytical Chemistry: It serves as a valuable pH indicator and colorimetric reagent. Its ability to change color in response to differing pH levels makes it essential in analytical assays and titrations.
  • Biological Relevance: The compound has been researched for its potential applications in biology, particularly in studying enzyme activities and interacting with cellular structures. Its azo group can participate in multiple reactions, providing versatile functionality.
  • Environmental Impact: As with many azo compounds, it is critical to consider its environmental impact. Efforts are ongoing to evaluate the biodegradability and toxicity of its byproducts to ensure safe disposal and usage.
  • Chemistry of Azo Compounds: The significance of azo compounds like this one can’t be understated. They are characterized by the –N=N– bond and are widely studied due to their relatively simple synthesis and extensive applications, from biological to material sciences.

In summary, sodium; 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonate exemplifies how a single compound can find use across multiple fields, showcasing the interconnectedness of chemistry and real-world applications. As research continues, understanding more about its properties and implications will only enhance its value in scientific endeavors.