61262-53-1

Basic information

• Product Name: 1,1'-[ethane-1,2-diylbisoxy]bis[pentabromobenzene]
• Synonyms: 1,1'-[ethane-1,2-diylbisoxy]bis[pentabromobenzene];ETHYLENEBIS(PENTABROMOPHENOXIDE);1,2-Bis(2,3,4,5,6-pentabromophenoxy)ethane
• CAS NO: 61262-53-1
• Molecular Formula: C₁₄H₄Br₁₀O₂
• Molecular Weight: 1005.23624
• EINECS: 262-680-7
• Mol File: 61262-53-1.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 685.1±55.0 °C(Predicted)
• Appearance: /
• Density: 2.785±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 1,1'-[ethane-1,2-diylbisoxy]bis[pentabromobenzene](CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-[ethane-1,2-diylbisoxy]bis[pentabromobenzene](61262-53-1)
• EPA Substance Registry System: 1,1'-[ethane-1,2-diylbisoxy]bis[pentabromobenzene](61262-53-1)

Safety Data

• Hazardous Substances Data: 61262-53-1(Hazardous Substances Data)

Usage

Uses

1,2-Bis(pentabromophenoxy)ethane is a brominated flame retardant that functions as an androgen agonist.

Hazard

Moderately toxic by inhalation and skin contact. Low toxicity by ingestion.

Upstream product

• 103-29-7 1,1'-(1,2-ethanediyl)bisbenzene 
• 38521-51-6 2,3,4,5,6-pentabromobenzyl bromide 

Downstream Products

• 103-29-7 1,1'-(1,2-ethanediyl)bisbenzene 
• 141967-83-1 dodecabromo-1,2-diphenylethane 

Relevant articles and documents

PREPARATION OF HIGH ASSAY DECABROMODIPHENYLALKANE PRODUCT WITH LOW OCCLUDED FREE BROMINE CONTENT

A high assay decabromodiphenylalkane product in which the alkylene group contains in the range of about 1-10 carbon atoms and has an occluded free bromine content of a liquid phase reaction mixture, at least one α,ω-diphenylalkane having an alkylene group of 1-10 carbon atoms, with a limited excess of bromine, in the presence of an aluminum, aluminum halide or a ferric halide catalyst in which the original halogen atoms of such halides are chlorine atoms, bromine atoms, or both. The limited excess of bromine is such that the maximum excess amount of bromine used in conducting the reaction is about 20 mole % relative to the stoichiometric amount required to convert the amount of α,ω-diphenylalkane used to decabromodiphenylalkane. Crude high assay decabromodiphenylalkane product is prepared without use of heat treatment, oven ageing, or grinding or other forms of pulverization.

PREPARATION AND PROVISION OF HIGH ASSAY DECABROMODIPHENYLETHANE

High assay, reaction-derived decabromodiphenylethane product is prepared by feeding (i) diphenylethane or (ii) partially brominated diphenylethane having an average bromine number less than about two, or (iii) both of (i) and (ii), into the liquid confines of a reaction mixture. Such reaction mixture is (a) formed from components comprised of excess liquid bromine and aluminum-based Lewis acid bromination catalyst, and (b) maintained at one or more elevated reaction temperatures of from about 45°-90° C., and at least when elevated pressure is needed to keep a liquid state in the reaction mixture at the temperature(s) used, the reaction mixture is at such an elevated pressure, whereby ar-bromination occurs. The feeding is conducted at a rate slow enough to form high assay reaction-derived decabromodiphenylethane product, which is an effective flame retardant.

PROCESSING OF SOLID BROMINATED AROMATIC ORGANIC COMPOUNDS CONTAINING OCCLUDED BROMINE

Solid-state highly brominated compounds such as solid brominated flame retardants with bromine contents of at least about 60 wt % often contain occluded bromine. Because of their high bromine contents, such compounds have relatively low solubility in common organic solvents. Despite this low solubility, the content of occluded bromine in such solid brominated compounds is effectively reduced by agitating a concentrated agitated slurry of the compound in an inert solvent at a suitable temperature for at least about 1 hour. Thereafter, solids with reduced content of occluded bromine are isolated or recovered from the slurry. Novel products having substantially reduced or eliminated occluded bromine contents and other very desirable characteristics are also provided.