2497-33-8

Basic information

• Product Name: Phenol, 4-[(4-methylphenyl)azo]-
• Synonyms: 4-hydroxyl-4'-methylazobenzene;4-hydroxy-4'-methylazobenzene;Phenol, 4-[(4-methylphenyl)azo]-
• CAS NO: 2497-33-8
• Molecular Formula: C13H12N2O
• Molecular Weight: 212.251
• Mol File: 2497-33-8.mol
• Article Data: 30

Chemical Properties

• Melting Point: 153 °C
• CAS DataBase Reference: Phenol, 4-[(4-methylphenyl)azo]-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 4-[(4-methylphenyl)azo]-(2497-33-8)
• EPA Substance Registry System: Phenol, 4-[(4-methylphenyl)azo]-(2497-33-8)

Safety Data

• Hazardous Substances Data: 2497-33-8(Hazardous Substances Data)

Usage

General Description

4-[(4-methylphenyl)azo]-phenol is a chemical compound commonly known as 4-methylphenylazo-phenol or Brilliant Pink B. It is a red dye used in various industries, including textile, paper, and leather. This azo dye is often used as an indicator in pH tests and as a biological stain. It is also used in the food industry to color products such as sausages and canned fruit. However, there are concerns about its potential health risks, as it can cause skin and eye irritation, and may be harmful if ingested or inhaled. Therefore, proper handling and safety measures should be taken when working with this chemical.

Upstream product

• 106-49-0 p-toluidine 
• 108-95-2 phenol 
• 57573-52-1 4-methylbenzene diazonium 
• 17310-78-0 β-p-methylazoxybenzene 
• 7664-93-9 sulfuric acid 
• 17310-79-1 4-methylazoxybenzene 
• 104-91-6 p-nitrosophenol 
• 637-62-7 p-benzoquinone oxime 
• 2028-84-4 p-methylbenzenediazonium chloride 
• 949-87-1 4-Methylazobenzol 
• 25977-69-9 1-(p-chlorophenyl)-3-(p-tolyl)-triazene 
• 785-86-4 1,3-di(p-tolyl)triaz-1-ene 
• 860757-41-1 benzoic acid-[(4-oxo-cyclohexa-2,5-dienylidene)-p-tolyl-hydrazide] 
• 99-96-7 4-hydroxy-benzoic acid 

Downstream Products

• 38502-01-1 (E)-2-hydroxy-5-[(p-tolylimino)methyl]benzaldehyde 
• 20739-72-4 1-(4-chlorophenyl)-2-(p-tolyl)diazene 
• 55936-45-3 2,6-dibromo-4-p-tolylazo-phenol 
• 100556-11-4 2-Nitro-4-p-tolylazo-phenol 
• 116496-06-1 benzoic acid-(4-p-tolylazo-phenyl ester) 
• 123-30-8 4-amino-phenol 
• 106-49-0 p-toluidine 
• 29418-44-8 1-(4-methoxyphenyl)-2-p-tolyldiazene 

Relevant articles and documents

Construction of stable polymeric vesicles based on azobenzene and beta-cyclodextrin grafted poly(glycerol methacrylate)s for potential applications in colon-specific drug delivery

Polymeric vesicles constructed from cyclodextrin- and azobenzene-grafted poly(glycidyl methacrylate)s showed excellent stability owing to the multiple host-guest complexation. Upon culturing in Na2S2O4-contained buffer sol

Azobenzene derivative, solar thermal energy fuel film composite material and preparation method and application thereof

The invention relates to an azobenzene derivative, a solar thermal energy fuel film composite material and a preparation method and application thereof, discloses a series of azobenzene derivatives, and provides a method for preparing a photo-induced phase change ready-to-use solar thermal energy fuel film through the azobenzene derivatives. The prepared solar thermal energy fuel composite film has good mechanical flexibility, photoisomerization effect and energy storage capacity. The composite film can rapidly generate cis-trans isomerization to store energy under the irradiation of an ultraviolet lamp, the stored energy is gradually increased along with the prolonging of irradiation time, the full state can be achieved within about 2 hours, the energy density can reach 200 J/g or above,and the temperature of the composite film can be continuously increased by about 5 DEG C. The charging/discharging process has very good reversibility, and no obvious attenuation exists after the energy is circularly charged/discharged for more than 5 times. The composite material has the advantages of simple preparation process, environmental friendliness, easily available materials, large heat release amount, good mechanical flexibility, strong acid and alkali corrosion resistance, good recycling performance and the like.

Effects of Spacers on Photoinduced Reversible Solid-to-Liquid Transitions of Azobenzene-Containing Polymers

Photoisomerization in some azobenzene-containing polymers (azopolymers) results in reversible solid-to-liquid transitions because trans- and cis-azopolymers have different glass transition temperatures. This property enables photoinduced healing and proce