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p-Nitroazophenol

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Identification
Molecular formula
C12H9N3O3
CAS number
1533-77-9
IUPAC name
4-(4-nitrophenyl)azophenol
State
State

At room temperature, p-Nitroazophenol is typically found in a solid state. It is often available as fine crystalline powder.

Melting point (Celsius)
142.00
Melting point (Kelvin)
415.00
Boiling point (Celsius)
427.00
Boiling point (Kelvin)
700.00
General information
Molecular weight
246.22g/mol
Molar mass
246.2160g/mol
Density
1.3500g/cm3
Appearence

p-Nitroazophenol appears as orange-red crystals, giving it a distinctive look among azo compounds. This vibrant color is due to the extended conjugation of the azo bond and nitro group, which also contribute to its application as a dye or pigment in various industries.

Comment on solubility

Solubility of 4-(4-nitrophenyl)azophenol

4-(4-nitrophenyl)azophenol, often referred to as an azo compound, exhibits intriguing solubility characteristics that are influenced by its molecular structure. Generally, azo compounds can display varying solubility in different solvents due to the presence of polar and non-polar groups within their structures.

When discussing the solubility of 4-(4-nitrophenyl)azophenol, it is important to consider the following factors:

  • Polarity: The nitro group (–NO2) present in the compound increases its polarity, enhancing solubility in polar solvents such as water.
  • Hydrophobic interactions: Conversely, the aromatic rings contribute to hydrophobic character, which may hinder solubility in highly polar solvents.
  • Solvent choice: It is typically observed that 4-(4-nitrophenyl)azophenol demonstrates better solubility in organic solvents like ethanol or acetone compared to water.

In summary, the solubility behavior of 4-(4-nitrophenyl)azophenol can be succinctly encapsulated as follows:

  1. Higher solubility in polar organic solvents.
  2. Moderate to low solubility in water due to competing effects of polarity and hydrophobicity.

Understanding these solubility traits is crucial for applications in dyes and pigments, where solvent compatibility plays a vital role in performance.

Interesting facts

Interesting Facts about 4-(4-nitrophenyl)azophenol

4-(4-nitrophenyl)azophenol is a fascinating organic compound that belongs to the class of azo dyes. Here are some intriguing aspects of this compound:

  • Structure and Composition: This compound features a unique azo group (-N=N-) connecting two aromatic rings. The presence of a nitrophenyl substituent significantly contributes to its chemical properties and reactivity.

  • Color and Applications: Like many azo dyes, 4-(4-nitrophenyl)azophenol is known for its vivid coloration, making it useful in various industries. Common applications include:
    • Dyeing fabrics
    • Coloring plastics
    • Uses in biological staining

  • Chemical Behavior: The electron-withdrawing nitro group enhances the overall reactivity of the compound, leading to interesting interactions in different chemical environments.

  • Analytical Uses: 4-(4-nitrophenyl)azophenol can be utilized in analytical chemistry for:
    • Spectrophotometric analyses
    • As a reagent for detecting certain metal ions

  • Interest in Research: Researchers are often interested in azo compounds like this one due to their vibrant colors and potential applications in novel synthetic materials, including smart materials and sensors.

In summary, 4-(4-nitrophenyl)azophenol is not just a colorful dye; it serves as a valuable compound in various applications and chemical research, making it a topic worth exploring in the field of organic chemistry.

Synonyms
1435-60-5
4-Hydroxy-4'-nitroazobenzene
4-(4-NITROPHENYLAZO)PHENOL
4-[(4-nitrophenyl)diazenyl]phenol
MFCD00161165
4-((4-Nitrophenyl)azo)phenol
4-[(4-Nitrophenyl)azo]phenol
Phenol, 4-((4-nitrophenyl)azo)-
Phenol, 4-[(4-nitrophenyl)azo]-
4-[(1E)-2-(4-NITROPHENYL)DIAZEN-1-YL]PHENOL
4-((4-nitrophenyl)diazenyl)phenol
NSC45166
NSC 45166
Phenol, 4-(2-(4-nitrophenyl)diazenyl)-
4-(4-nitro-phenylazo)phenol
4-nitro-4'-hydroxyazobenzene
4-(4'-Nitrophenylazo)phenol
4-nitro-4'-hydroxy-azobenzene
SCHEMBL4278062
CHEMBL2204743
DTXSID2061690
SCHEMBL17088267
4-[(4-Nitrophenyl)-azo]-phenol
NSC-45166
AKOS001583982
AKOS024340808
FN31052
(E)-4-((4-nitrophenyl)diazenyl)phenol
81944-71-0
LS-14046
CS-0160975
N0653
T71773
4-[2-(4-nitrophenyl)hydrazin-1-ylidene]cyclohexa-2,5-dien-1-one