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4-PHENYLAZOPHENOL

Basic information Safety Supplier Related

4-PHENYLAZOPHENOL Basic information

Product Name:
4-PHENYLAZOPHENOL
Synonyms:
  • 4-HYDROXYAZOBENZENE
  • 4-BENZENEAZOPHENOL
  • 4-PHENYLAZOPHENOL
  • CI NO 11800
  • CI 11800
  • SOLVENT YELLOW 7
  • P-PHENYLAZOPHENOL
  • P-HYDROXYAZOBENZENE
CAS:
1689-82-3
MF:
C12H10N2O
MW:
198.22
EINECS:
216-880-6
Mol File:
1689-82-3.mol
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4-PHENYLAZOPHENOL Chemical Properties

Melting point:
150-152 °C(lit.)
Boiling point:
230°C/20mmHg(lit.)
Density 
1.1447 (rough estimate)
refractive index 
1.6330 (estimate)
storage temp. 
2-8°C
solubility 
DMSO, Methanol
form 
Fine Crystalline Powder
pka
8.93±0.13(Predicted)
Colour Index 
11800
color 
Brown
Water Solubility 
Soluble in acetone, ethanol, benzene and ether. Insoluble in water.
BRN 
957567
CAS DataBase Reference
1689-82-3(CAS DataBase Reference)
IARC
3 (Vol. 8, Sup 7) 1987
EPA Substance Registry System
p-Phenylazophenol (1689-82-3)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
RIDADR 
3234
WGK Germany 
3
RTECS 
SM8300000
TSCA 
Yes
HS Code 
29270000
Hazardous Substances Data
1689-82-3(Hazardous Substances Data)

MSDS

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4-PHENYLAZOPHENOL Usage And Synthesis

Chemical Properties

BROWN FINE CRYSTALLINE POWDER

Uses

4-Phenylazophenol is a diaryl-azo derivative with potential use as potential antifungal agents. 4-Phenylazophenol is an azo dye with toxic effects as well as a being a soil contaminant.

Uses

4-Phenylazophenol is a diaryl-azo derivative with potential use as potential antifungal agents. 4-Phenylazophenol is an azo dye with toxic effects as well as a being a soil contaminant. Dyes and metabolites.

Preparation

aniline diazotization, and phenol coupling.

Properties and Applications

brilliant yellow. Soluble in ethanol, Acetone and benzene. In concentrated sulfuric acid for yellow orange, dilution after light yellow, In concentrated sodium hydroxide solution for gold. Used to varnish, grease, paraffin wax, resin, soap kind of coloring.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Good 160 Indissolvable

Purification Methods

Crystallise the dye from *benzene or 95% EtOH. [Beilstein 16 II 38, 16 III 86, 16 IV 159.]

4-PHENYLAZOPHENOL Preparation Products And Raw materials

Raw materials

4-PHENYLAZOPHENOLSupplier

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