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Methyl Orange

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Identification
Molecular formula
C14H14N3NaO3S
CAS number
547-58-0
IUPAC name
4-(2,6-dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline
State
State

At room temperature, Methyl Orange is typically in a solid crystalline state.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
327.34g/mol
Molar mass
327.3380g/mol
Density
1.2808g/cm3
Appearence

Methyl Orange is an orange-yellow crystalline powder. It is commonly used as a pH indicator in titrations because of its clear and distinct colour change.

Comment on solubility

Solubility of 4-(2,6-dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline

The solubility of the compound 4-(2,6-dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline is intricately linked to its unique molecular structure. This compound, characterized as a pyridinium salt, exhibits distinctive solubility traits:

  • Polarity: Being a quaternary ammonium compound, it tends to be more soluble in polar solvents like water and methanol due to its charged nature.
  • Intermolecular Interactions: The presence of both electron-donating and electron-accepting groups facilitates hydrogen bonding, enhancing solubility in polar environments.
  • Structural Features: The 4-azo group may also contribute to interactions with other compounds, impacting solubility dynamics.

As stated, "like dissolves like," which means that compounds with similar polarities will likely dissolve in each other. Thus, when examining the solubility of this complex molecule, one might find it to be:

  • Highly soluble in aqueous and organic polar solvents.
  • Less soluble or insoluble in non-polar solvents such as hexane or toluene.

Overall, the solubility profile of 4-(2,6-dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline emphasizes the importance of considering molecular structure when predicting solubility behavior in various environments.

Interesting facts

Interesting Facts About 4-(2,6-Dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline

This compound is a fascinating example of the versatility found in azo compounds, which are characterized by the presence of the azo (-N=N-) functional group. Azo compounds are often vibrant in color and are widely used in various applications, including dyes, pigments, and as indicators in chemical reactions.

Key Features

  • Azo Group: The azo functional group in this compound contributes to its distinctive electronic properties and color, making it useful in dye production.
  • Pyridinium Structure: The presence of the pyridinium ring enhances the stability of the molecule and allows for interesting interactions with other chemical species.
  • Dimethyl Groups: The two dimethyl groups in this structure impact solubility and chemical reactivity, influencing its behavior in different environments.

Interestingly, compounds such as this one can exhibit significant biological activity. Research has shown that azo compounds may have applications in pharmacology, acting as potential agents with various therapeutic effects.

Applications

  • Colorants
  • Indicators: Azo compounds can be employed as pH indicators or chemical indicators due to their ability to change color under certain conditions.
  • Biological Research: Their unique structure may provide insights into new drug development and targeting mechanisms in cells.

Overall, 4-(2,6-dimethyl-1-oxido-pyridin-1-ium-4-yl)azo-N,N-dimethyl-aniline exemplifies the diversity and complexity of azo compounds. It demonstrates how even a single molecule can intertwine various fields such as chemistry, biology, and industrial applications, sparking curiosity among scientists and students alike.

Synonyms
2,6-Dimethylpyridine-1-oxide-4-azo-p-dimethyl-aniline
7349-99-7
4-((4-(Dimethylamino)phenyl)azo)-2,6-lutidine 1-oxide
NSC 170625
4-[[4-(Dimethylamino)phenyl]azo]-2,6-lutidine 1-oxide
2,6-LUTIDINE, 4-((4-(DIMETHYLAMINO)PHENYL)AZO)-, 1-OXIDE
N,N-Dimethyl-4-(4'-(2',6'-dimethylpyridyl-1'-oxide)azo)aniline
2,6-Lutidine, 4-((p-(dimethylamino)phenyl)azo)-, 1-oxide
NSC170625
Benzenamine, 4-((2,6-dimethyl-4-pyridinyl)azo)-N,N-dimethyl-, N-oxide
NSC-170625
N,6'-dimethylpyridyl-1'-oxide)azo]aniline
WLN: T6NJ AO B1 DNUNR DN1&1& F1
2, 4-[[4-(dimethylamino)phenyl]azo]-, 1-oxide
Benzenamine,6-dimethyl-4-pyridinyl)azo]-N,N-dimethyl-, N-oxide