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Sudan I

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Identification
Molecular formula
C16H12N2O
CAS number
842-07-9
IUPAC name
4-(4-phenylazophenyl)azophenol
State
State

At room temperature, Sudan I is typically found in a solid crystalline state.

Melting point (Celsius)
127.00
Melting point (Kelvin)
400.15
Boiling point (Celsius)
321.00
Boiling point (Kelvin)
594.15
General information
Molecular weight
248.27g/mol
Molar mass
248.2700g/mol
Density
1.1655g/cm3
Appearence

Sudan I is an orange-red crystalline powder. It is often used as a dye and can impart a vivid orange hue to materials it is applied to.

Comment on solubility

Solubility of 4-(4-phenylazophenyl)azophenol

4-(4-phenylazophenyl)azophenol, known for its vibrant color and complex structure, exhibits distinct solubility characteristics that are influenced by various factors. This compound is primarily insoluble in water, which is common for many organic compounds featuring bulky aromatic groups. However, it has the potential to dissolve in organic solvents. Here are some key points regarding its solubility:

  • Nonpolar Solvents: 4-(4-phenylazophenyl)azophenol is likely to dissolve in nonpolar solvents such as benzene, toluene, or chloroform due to compatible interactions between the compound and the solvent.
  • Polar Solvents: Limited solubility can be observed in moderately polar solvents, where the compound may exhibit some interaction via hydrogen bonding or dipole-dipole interactions.
  • Temperature Influence: The solubility may also increase with temperature, as heating often enhances molecular motion and interactions between the solute and solvent.

In summary, solubility plays a critical role in the application and utilization of 4-(4-phenylazophenyl)azophenol. Understanding its solubility profile is essential for effective usage in fields such as dyes and pigments, where the medium dictates not only color development but also stability.

Interesting facts

Interesting Facts about 4-(4-phenylazophenyl)azophenol

4-(4-phenylazophenyl)azophenol is a fascinating compound that belongs to the family of azobenzenes, known for their unique properties and applications in various fields. Here are some intriguing aspects of this compound:

  • Photochromism: This compound exhibits photochromic behavior, meaning it can change color upon exposure to light. This property is particularly useful in creating light-responsive materials.
  • Applications in Dyes: Given its vivid color and stability, it is often used as a dye in textiles and plastics, offering vibrant hues and excellent fastness properties.
  • Biological Activity: Research has indicated that azobenzenes, including this compound, can have interesting biological activities, such as serving as potential drug delivery agents or therapeutic agents.
  • Thermotropic Liquid Crystals: Compounds like 4-(4-phenylazophenyl)azophenol often demonstrate liquid crystalline phases, making them valuable in the development of liquid crystal displays (LCDs).
  • Synthesis: Synthesizing this compound can be quite challenging, involving diazotization and coupling reactions, which are fundamental in organic chemistry.
  • Research Potential: Ongoing studies are exploring its capabilities in nanotechnology, as researchers investigate its potential in molecular switches and sensors.

In summary, 4-(4-phenylazophenyl)azophenol is not only a compound of aesthetic appeal due to its striking colors but also a subject of scientific curiosity due to its versatile uses and potential areas of application. As a chemist, being familiar with such compounds can open up pathways to innovative research and practical solutions in various industries.

Synonyms
Disperse Yellow 23
p-[[p-(Phenylazo)phenyl]azo]phenol
Phenol, 4-((4-(phenylazo)phenyl)azo)-
Phenol, 4-[[4-(phenylazo)phenyl]azo]-
p-((p-(Phenylazo)phenyl)azo)phenol
Phenol, 4-(2-(4-(2-phenyldiazenyl)phenyl)diazenyl)-
Phenol, 4-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-
228-370-0
6250-23-3
C.I. DISPERSE YELLOW 23
Dianix Yellow 5R
Latyl Yellow 4RL
Foron Yellow RGFL
Cibacet Yellow 2RG
Setacyl Yellow 3RN
Terasil Yellow 2RG
Artisil Yellow RGFL
Calcophen Yellow 4RL
Nyloquinone Yellow 3R
Setacyl Yellow P-3RL
Fenacet Fast Yellow 4R
p-Hydroxy-p-bis azobenzene
Celliton Fast Yellow 4RL-CF
SRA Fast Golden Yellow XIII
Acetoquinone Light Yellow 3RLLZ
Esteroquinone Light Yellow 3RLL
4-[(4-phenyldiazenylphenyl)diazenyl]phenol
Foron Yellow RGFL ultra-dispersed
C.I. 26070
NSC-45565
Phenol, p-((p-(phenylazo)phenyl)azo)-
Disperse Yellow 23 (Technical Grade)
Phenol, p-[[p-(phenylazo)phenyl]azo]-
EINECS 228-370-0
NSC 45565
4EE3Z6ZLE2
Disperse Yellow 23 100 microg/mL in Acetonitrile
SCHEMBL1198024
DTXSID1064162
SCHEMBL20580111
SCHEMBL21995787
RTZYVAQWQXPIAC-UHFFFAOYSA-N
4[4'-(phenylazo)phenylazo]phenol
HY-D0400
NSC45565
AKOS024333105
AKOS025116969
FD41304
AS-17184
CS-0010451
NS00043854
G77832
Disperse Yellow 23, technical grade dye content
4-[2-[4-(2-Phenyldiazenyl)phenyl]diazenyl]phenol
4-(4-PHENYLAZO-PHENYLAZO)-PHENOL(DISPERSE DYE C.I. 26070)