2491-56-7

Basic information

• Product Name: 2-[(4-Chlorophenyl)azo]-4-methylphenol
• Synonyms: 2-(4-Chlorophenylazo)-4-methylphenol;2-[(4-Chlorophenyl)azo]-4-methylphenol;4-Chloro-2'-hydroxy-5'-methylazobenzene;4'-Chloro-5-methylazobenzene-2-ol;4-Methyl-2-(4-chlorophenylazo)phenol;5-Methyl-4'-chloroazobenzene-2-ol
• CAS NO: 2491-56-7
• Molecular Formula: C₁₃H₁₁ClN₂O
• Molecular Weight: 246.6922
• Mol File: 2491-56-7.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 379.7°Cat760mmHg
• Flash Point: 183.5°C
• Appearance: /
• Density: 1.23g/cm³
• Vapor Pressure: 5.73E-06mmHg at 25°C
• Refractive Index: 1.603
• CAS DataBase Reference: 2-[(4-Chlorophenyl)azo]-4-methylphenol(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[(4-Chlorophenyl)azo]-4-methylphenol(2491-56-7)
• EPA Substance Registry System: 2-[(4-Chlorophenyl)azo]-4-methylphenol(2491-56-7)

Safety Data

• Hazardous Substances Data: 2491-56-7(Hazardous Substances Data)

Usage

Type of compound

Diazo dye

Usage

pH indicator, colorant in textile industry, food and cosmetic industries

Appearance

Red to dark brown powder

Solubility

Sparingly soluble in water

Pharmaceutical potential

Treatment of various skin conditions

Research status

Further research needed to understand its pharmacological effects

InChI:InChI=1/C13H11ClN2O/c1-9-2-7-13(17)12(8-9)16-15-11-5-3-10(14)4-6-11/h2-8,15H,1H3/b16-12-

Upstream product

• 106-44-5 p-cresol 
• 2028-74-2 p-chlorobenzenediazonium chloride 
• 106-47-8 4-chloro-aniline 
• 119-33-5 4-methyl-2-nitrophenol 

Downstream Products

• 26054-11-5 4-acetoxy-3-(4-chloro-phenylazo)-toluene 
• 32985-89-0 bis(2-{4-chloro-benzeneazo}-1-hydroxy-4-methyl-benzene)-cobalt(II) 
• 89710-98-5 {Cu(C₆H₄ClNNC₆H₃(CH₃)(O))2} 
• 335001-32-6 Os(P(C₆H₅)3)2Br(ClC₆H₃N₂C₆H₃(CH₃)O) 
• 226999-98-0 [Ru(CH₃COCHCOCH₃)(CH₃C₆H₃(O)N₂C₆H₄Cl)2] 
• 874298-56-3 carbonylhydrido(2-(4'-chlorophenylazo)-4-methylphenolato-N⁽¹⁾,O)bis(triphenylphosphine)ruthenium 
• 874298-61-0 carbonyl(2-(4'-chlorophenylazo)-4-methylphenolato^(2-)-C(2'),N⁽¹⁾,O)bis(triphenylphosphine)ruthenium 
• 330685-09-1 [Rh(P(C₆H₅)3)2(ClC₆H₃N₂OC₆H₃CH₃)Cl] 
• 1006709-31-4 [Ru(OC₆H₃(CH₃)N₂C₆H₃Cl)(CO)(As(C₆H₅)3)2] 
• 652132-03-1 [Ir(triphenylphosphine)2(2-(4'-chlorophenylazo)-4-methylphenolato)(H)] 

Relevant articles and documents

Aryliminodimagnesium Reagents. XVI. Formation of o-Hydroxyazoarenes by Condensation with o-Hydroxynitroarenes. Favorable Role of o-Hydroxyl Group in the Reaction

Hydroxy(HO)-azoxy and -azoarenes were formed by condensation of ArN(MgBr)2 with o-, m-, and p-HO-nitrobenzenes; nuclear substitution took place as a minor or a major pathway. o-HO-azobenzene was obtained in sufficiently high yield.Relative yields of the products varied according to the position of HO group and reaction conditions.The yield variation was explained by the effects of relative efficiency of single electron transfer, ?-complexation, and cooperation of reagent molecules.