84755-44-2

Basic information

• Product Name: 2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol
• CAS NO: 84755-44-2
• Molecular Formula: C₂₀H₂₅N₃O₂
• Molecular Weight: 339.4314
• Mol File: 84755-44-2.mol
• Article Data: 9

Chemical Properties

• Boiling Point: 474.1°C at 760 mmHg
• Flash Point: 240.5°C
• Density: 1.14g/cm³
• Vapor Pressure: 1.3E-09mmHg at 25°C
• Refractive Index: 1.59
• CAS DataBase Reference: 2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol(84755-44-2)
• EPA Substance Registry System: 2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol(84755-44-2)

Safety Data

• Hazardous Substances Data: 84755-44-2(Hazardous Substances Data)

Usage

General Description

2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol is a chemical compound that is commonly used as a UV absorber and light stabilizer in various products such as plastics, adhesives, and coatings. It is a highly effective antioxidant that helps to protect materials from degradation caused by exposure to UV radiation and other environmental factors. The compound is a derivative of the benzotriazole family, which are known for their ability to absorb and dissipate UV radiation, thereby preventing the degradation of the materials they are used in. Due to its light stabilizing properties, 2,4-di-tert-butyl-6-(1-oxido-2H-benzotriazol-2-yl)phenol is widely used in the production of plastic films, fibers, and other materials that need to withstand outdoor exposure.

Upstream product

• 52184-14-2 2,4-bis(1,1-dimethylethyl)-6-[(2-nitrophenyl)diazenyl]phenol 
• 52184-14-2 2,4-Di-tert-butyl-6-(2-nitro-phenylazo)-phenol 
• 96-76-4 2,4-di-tert-Butylphenol 
• 111-87-5 octanol 
• 27959-42-8 2-nitro-2'-hydroxy-5'-tert-butylazobenzene 
• 486-25-9 9-fluorenone 
• 88-74-4 2-nitro-aniline 

Downstream Products

• 3846-71-7 2-(2'H-benzotriazol-2'-yl)-4,6-di-tert-butylphenol 

Relevant articles and documents

Electrochemical synthesis of 2-aryl-2H-benzotriazoles and their N-oxides by controlled potential cathodic electrolysis

Using a divided cell, reductive cyclizations of o-nitrophenylazo dyes (1) toward 2-aryl-2H-benzotriazole-1-oxides (2) or 2-aryl-2H-benzotriazoles (3) were successfully accomplished by the controlled potential cathodic electrolysis reactions. 1 was transformed to 2 under neutral conditions while 1 was transformed to 3 under basic conditions.

Reductive cyclization of o-nitrophenylazobenzenes to 2-aryl-2H- benzotriazoles by SmI2

In a mild reaction with SmI2, ortho-nitro substituted phenylazobenzenes have been converted into 2-aryl-2H-benzotriazoles.

Method for preparing 2-phenylbenzotriazoles

This invention relates to a method for preparing a 2-phenylbenzotriazole of formula I, STR1 (wherein R1 represents hydrogen or chlorine atom, a lower alkyl group having a carbon number of 1 to 4, a lower alkoxy group having a carbon number of 1 to 4, carboxyl group, or sulfonic acid group; R2 represents hydrogen or chlorine atom, a lower alkyl group having a carbon number of 1 to 4, or a lower alkoxy group having a carbon number of 1 to 4; R3 represents hydrogen or chlorine atom, an alkyl group having a carbon number of 1 to 12, a lower alkoxyl group having a carbon number of 1 to 4, phenyl group, a phenyl group substituted with an alkyl group having a carbon number of 1 to 8, phenoxy group, or a phenylalkyl group, the alkyl part of which has a carbon number of 1 to 4; R4 represents hydrogen or chlorine atom, hydroxyl group, or a lower alkoxy group having a carbon number of 1 to 4; and R5 represents hydrogen atom, an alkyl group having a carbon number of 1 to 12, or a phenylalkyl group, the alkyl part of which has a carbon number of 1 to 4), which comprises reducing an o-nitroazobenzene of formula III, STR2 (wherein R1, R2, R3, R4 and R5 are as defined above) with at least one selected from the group consisting of primary and secondary alcohol reducing agents in the presence of an aromatic ketone catalyst and base. This invention further relates to a method for preparing a 2-phenylbenzotriazole of formula I as defined above, which comprises reducing 1 mole 2-phenylbenzotriazole-N-oxide of formula II, STR3 (wherein R1, R2, R3, R4 and R5 are as defined above) with 0.4 to 0.7 mole primary alcohol and/or 0.8 to 1.4 mole secondary alcohol in the presence of an aromatic ketone catalyst and base. This invention still further relates to a method for preparing a 2-phenylbenzotriazole-N-oxide of formula II as defined above, which comprises reducing 1 mole o-nitroazobenzene of formula III as defined above with 0.4 to 0.7 mole primary alcohol and/or 0.8 to 1.4 mole secondary alcohol in the presence of an aromatic ketone catalyst and base.