36437-37-3

Basic information

• Product Name: 2-(2'-Hydroxy-3'-sec-butyl-5'-tert-butylphenyl)benzotriazole
• Synonyms: 2-(2'-Hydroxy-3'-sec-butyl-5'-tert-butylphenyl)benzotriazole;2-(2h-benzotriazol-2-yl)-4-(tert-butyl)-6-(sec-butyl)phenol;TINUVIN 350;2-(2h-benzotriazol-2-yl)-4-(1,1-dimethylethyl)-6-(1-methylpropyl)-pheno;2-(2H-benzotriazol-2-yl)-4-(1,1-dimethylethyl)-6-(1-methylpropyl)-Phenol;2-(3-sec-Butyl-2-hydroxy-5-tert-butylphenyl)benzotriazole;benzotriazolelightstabilizer;Phenol,2-(2H-benzotriazol-2-yl)-4-(1,1-dimethylethyl)-6-(1-methylpropyl)-
• CAS NO: 36437-37-3
• Molecular Formula: C₂₀H₂₅N₃O
• Molecular Weight: 323.432
• EINECS: 253-037-1
• Mol File: 36437-37-3.mol
• Article Data: 5

Chemical Properties

• Melting Point: 81-83 °C(Solv: ethanol (64-17-5))
• Boiling Point: 458 °C at 760 mmHg
• Flash Point: 230.8 °C
• Appearance: /
• Density: 1.12 g/cm³
• Vapor Pressure: 5.22E-09mmHg at 25°C
• Refractive Index: 1.594
• Storage Temp.: Refrigerator
• Solubility: Chloroform (Slightly), DMSO (Slightly, Heated, Sonicated)
• PKA: 8.31±0.50(Predicted)
• CAS DataBase Reference: 2-(2'-Hydroxy-3'-sec-butyl-5'-tert-butylphenyl)benzotriazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(2'-Hydroxy-3'-sec-butyl-5'-tert-butylphenyl)benzotriazole(36437-37-3)
• EPA Substance Registry System: 2-(2'-Hydroxy-3'-sec-butyl-5'-tert-butylphenyl)benzotriazole(36437-37-3)

Safety Data

• Hazardous Substances Data: 36437-37-3(Hazardous Substances Data)

Usage

Uses

2-(2H-Benzotriazol-2-yl)-4-(tert-butyl)-6-(sec-butyl)phenol is often used to increase product stability and to prevent discolouration in various consumer and industrial goods such as plastics. Benzotriazole UV stabilizers, such as 2-(2H-Benzotriazol-2-yl)-4-(tert-butyl)-6-(sec-butyl)pheno, are pollutants for the aquatic environment and have been implicated as a potential stable and toxic ligands for the aryl hydrocarbon receptor in human.

InChI:InChI=1/C20H25N3O/c1-6-13(2)15-11-14(20(3,4)5)12-18(19(15)24)23-21-16-9-7-8-10-17(16)22-23/h7-13,24H,6H2,1-5H3

Upstream product

• 52184-17-5 2-(2-butyl)-4-tert-butyl-6-(2-nitrophenylazo)-phenol 

Relevant articles and documents

Process for the preparation of benzotriazoles

A process for the preparation of compounds of formula (I): wherein the general symbols are as defined in claim 1, which comprises reacting a compound of formula (V): wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R18 are as defined in claim 1, and R18 is especially nitro, chlorine or bromine, with an azide compound of formula (IX): wherein M and n are as defined in claim 1, especially with sodium azide.

2-(2′-hydroxyphenyl)benzotriazoles used as U.V. stabilizers

2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroxyphenyl)benzotriazoles are useful as light stabilizers for organic polymers.

Preparation of Some 2-(2' H-Benzotriazol-2'-yl)phenol Ultraviolet Absorbers: Application of the Transalkylation Reaction

When 2-(2' H-benzotriazol-2'-yl)phenols containing t-alkyl substituents are warmed in toluene solution with an aluminium chloride/nitromethane catalyst, the t-alkyl groups are transferred to the solvent (toluene).This transalkylation reaction has been used to prepare not readily accessible or previously inaccessible 2-(2' H-benzotriazol-2'-yl)phenols, a class of ultraviolet absorbers widely used in industry.