31253-21-1

Basic information

• Product Name: (1,1,2,2-tetrabromoethyl)benzene
• CAS NO: 31253-21-1
• Molecular Formula: C₈H₆Br₄
• Molecular Weight: 421.7492
• Mol File: 31253-21-1.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 313.7°C at 760 mmHg
• Flash Point: 140.6°C
• Density: 2.393g/cm³
• Vapor Pressure: 0.000902mmHg at 25°C
• Refractive Index: 1.675
• CAS DataBase Reference: (1,1,2,2-tetrabromoethyl)benzene(CAS DataBase Reference)
• NIST Chemistry Reference: (1,1,2,2-tetrabromoethyl)benzene(31253-21-1)
• EPA Substance Registry System: (1,1,2,2-tetrabromoethyl)benzene(31253-21-1)

Safety Data

• Hazardous Substances Data: 31253-21-1(Hazardous Substances Data)

Usage

General Description

(1,1,2,2-tetrabromoethyl)benzene is a chemical compound with the molecular formula C8H8Br4. It is a colorless to pale yellow liquid and is primarily used as a flame retardant in a variety of products such as plastics, textiles, and electronics. This chemical is known for its high thermal stability and is effective in reducing the flammability of materials. However, (1,1,2,2-tetrabromoethyl)benzene has been identified as a persistent organic pollutant and is known to have toxic effects on both humans and the environment. It is important to handle and dispose of this chemical with care to minimize its impact on the environment and human health.

Upstream product

• 536-74-3 phenylacetylene 
• 6943-57-3 (phenylazo)diphenylmethyl acetate 
• 574-61-8 benzophenone N-phenylhydrazone 
• 6607-46-1 (Z)-(1,2-dibromovinyl)benzene 
• 79-28-7 1,1,2,2-tetrabromoethene 
• 79692-77-6 (phenylazo)diphenylmethanol 

Downstream Products

• 42172-21-4 2,5-Diphenyl-1,4-dithiin-Radikalkation 
• 38908-96-2 3-Phenyl-1,2-dithiet-Radikalkation 

Relevant articles and documents

Electrophilic bromination of alkenes, alkynes, and aromatic amines with iodic acid/potassium bromide under mild conditions

Bromination of alkenes, alkynes, and aromatic amines has efficiently been carried out at room temperature in short reaction times using HIO 3/KBr in CH2Cl2/H2O (1:1) to prepare corresponding brominated compounds in excellent yields.

Bromination of alkenes and alkynes with (bromodimethyl)sulfonium bromide

Alkenes and alkynes were brominated efficiently in high yields with (bromodimethyl)sulfonium bromide in acetonitrile at room temperature. Alkenes produced the corresponding trans-dibromo compounds while alkynes (except phenylacetylene) afforded both the trans-dibromo products (major) and the tetrabromo derivatives (minor). However, phenylacetylene furnished solely the tetrabromo compound.

Simple and practical halogenation of arenes, alkenes and alkynes with hydrohalic acid/H2O2 or TBHP)

A simple protocol for the halogenation of arenes utilizing a combination of aqueous hydrogen peroxide (34 %) or tert-butylhydroperoxide (70 %) and hydrohalic acid is presented. A similar procure of oxyhalogenation involving the in situ generation of positive halogen reagents is applied for the preparation of vicinal trans-dibromoalkanes and dichloroalkanes from alkenes. The reaction of alkenes with a combination of hydrochloric acid and hydrobromic acid with hydrogen peroxide gave a mixture of 1-bromo 2-chloro alkanes and 1,2-dibromoalkanes: Oxidative bromination of alkynes is also reported under similar conditions.