Sodium salt of Sudan I | Solubility of Things

Identification

Molecular formula

C₁₆H₁₁N₂NaO₅S

CAS number

3118-97-6

IUPAC name

sodium;3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate

State

At room temperature, the sodium salt of Sudan I exists as a solid. Its vivid color and powdered consistency make it easily identifiable and distinguishable from other solids.

Melting point (Celsius)

199.00

Melting point (Kelvin)

472.15

Boiling point (Celsius)

0.00

Boiling point (Kelvin)

0.00

General information

Molecular weight

350.32g/mol

Molar mass

350.3200g/mol

Density

1.5300g/cm³

Appearence

Sudan I appears as a reddish-orange solid. It often comes in the form of a free-flowing powder. The intense orange hue makes it suitable as a dye for various applications. Due to its azo structure, it exhibits bright coloring properties that make it visually distinct.

Comment on solubility

Solubility of Sodium 3-[(1,5-Dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate

Sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate, commonly referred to as a dye or staining agent, exhibits interesting solubility characteristics that are crucial for its applications. Here are some key points regarding its solubility:

Water Solubility: This compound is generally soluble in water due to the presence of ionic sodium groups that interact favorably with water molecules.
Organic Solvents: Its solubility in organic solvents may vary; it tends to be less soluble in nonpolar solvents, making it more suitable for aqueous applications.
pH Dependence: The solubility can be affected by the pH of the solution. In more acidic or alkaline environments, solubility may increase due to shifts in protonation states.
Temperature Effects: Increased temperatures may often lead to higher solubility, though this is dependent on specific solvent interactions.

In conclusion, the solubility of sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate is largely influenced by its ionic nature, making it an effective compound in aqueous environments. Understanding these solubility traits is vital for its effective utilization in various chemical applications.

Interesting facts

Interesting Facts About Sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate

Sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-benzenesulfonate is a fascinating compound in the world of organic chemistry, especially notable for its application in various fields such as dye chemistry and analytical chemistry. Here are some intriguing aspects of this compound:

Dye Properties: This compound is a type of azo dye, characterized by the presence of the azo group (–N=N–). Azo dyes are renowned for their vibrant colors and are widely used in textile and food industries. Their ability to produce vivid shades makes them extremely valuable.
pH Sensitivity: The presence of hydroxyl groups in its structure allows this compound to exhibit pH-sensitive behavior, making it useful for applications in pH indicators, where color changes can signal acidity or alkalinity.
Biological Applications: Due to its naphthalene structure, it has potential applications in biological systems, such as serving as markers for various biochemical assays, which is essential for advancements in medicinal chemistry.
Complex Formation: The sulfonate group contributes to the solubility in water, which is critical for its interactions with biological molecules or complexation with metal ions in various chemical analyses.

As one researcher noted, “The versatile applications of azo compounds in both synthetic and analytical realms underscore the importance of studying their properties and reactivity.”
In studying this compound, students can explore a range of concepts from molecular behavior to practical applications in dye synthesis and environmental chemistry. Its unique structural characteristics not only enable diverse chemical reactions but also make it a subject of extensive research in understanding dye interactions and performances.