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        Octabromodiphenyl Ether

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        Octabromodiphenyl Ether

        EINECS
        CAS No. 32536-52-0 Density 2.768g/cm3
        Solubility Melting Point
        Formula C12H2 Br8 O Boiling Point 523.5°Cat760mmHg
        Molecular Weight 801.42 Flash Point 219.7°C
        Transport Information Appearance
        Safety Moderately toxic by inhalation and skin contact. Low toxicity by ingestion. When heated to decomposition it emits toxic vapors of Br. Risk Codes 61-62
        Molecular Structure Molecular Structure of 32536-52-0 (Benzene, 1,1'-oxybis-,octabromo deriv.) Hazard Symbols Moderately toxic by inhalation and skin contact. Low toxicity by ingestion.
        Synonyms

        Phenylether, octabromo deriv. (8CI); Bromkal 79-8DE; CD 79; DE 79; EB 8; FR 1208; FR143; Octabromobiphenyl ether; Octabromodiphenyl ether; Octabromodiphenyl oxide;Tardex 80

         

        Octabromodiphenyl Ether Chemical Properties

        Chemistry informtion about Octabromodiphenyl Ether (CAS NO.32536-52-0) is:
        IUPAC Name: 1,2,3,4,5-Pentabromo-6-(2,4,5-Tribromophenoxy)Benzene
        Synonyms: 1,1'-Oxybisbenzeneoctabromoderiv. ; 1,1'-Oxybis-Benzenoctabromoderiv. ; Benzene,1,1'-Oxybis-,Octabromoderiv. ; Bromkal79-8de ; Cd79 ; De79 ; Eb8 ; Fr1208 
        Product Categories: Organics 
        MF: C12H2Br8O
        MW: 801.38
        EINECS: 251-087-9 
        Density: 2.768 g/cm3
        Flash Point: 219.7 °C
        Boiling Point: 523.5 °C at 760 mmHg
        Vapour Pressure: 1.57E-10 mmHg at 25°C 
        Enthalpy of Vaporization: 76.71 kJ/mol
        Following is the molecular structure of Octabromodiphenyl Ether (CAS NO.32536-52-0) is:

        Octabromodiphenyl Ether Uses

         Octabromodiphenyl Ether (CAS NO.32536-52-0) is used in conjunction with antimony trioxide as a flame retardant in the housings of electrical and electronic equipment, mainly in the plastic acrylonitrile butadiene styrene, but also in high impact polystyrene, polybutylene terephthalate and polyamides. Typically 12–15% of the weight of the final product will consist of octaBDE.

        Octabromodiphenyl Ether Production

        Commercial Octabromodiphenyl Ether (also known as "Octabrom") is a technical mixture of different PBDE congeners having an average of 7.2 to 7.7 bromine atoms per molecule of diphenyl ether.[1] The predominant congeners in commercial octaBDE are those of heptabromodiphenyl ether and octaBDE. The term octaBDE alone refers to isomers of octabromodiphenyl ether (PBDE congener numbers 194–205); the Infobox displays BDE-203 (2,2’,3,4,4’,5,5’,6-octabromodiphenyl ether).

        Octabromodiphenyl Ether Toxicity Data With Reference

        Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
        rabbit LD skin > 2gm/kg (2000mg/kg)   National Technical Information Service. Vol. OTS0522296,
        rat LC inhalation > 60gm/m3/1H (60000mg/m3) behavioral: somnolence (general depressed activity) lungs, thorax, or respiration: respiratory stimulation skin and appendages (skin): "dermatitis, other: after systemic exposure" National Technical Information Service. Vol. OTS0522296,
        rat LD oral > 5gm/kg (5000mg/kg)   National Technical Information Service. Vol. OTS0522296,

        Octabromodiphenyl Ether Safety Profile

        Safty information about Octabromodiphenyl Ether (CAS NO.32536-52-0) is:
        Moderately toxic by inhalation and skin contact. Low toxicity by ingestion. When heated to decomposition it emits toxic vapors of Br
        Hazard Codes:
        IrritantXi
        ToxicT
        Risk Statements:
        R61:May cause harm to the unborn child. 
        R62:Risk of impaired fertility.
        Safety Statements:
        S53:Avoid exposure - obtain special instructions before use. 
        S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
        RIDADR: 3152
        HazardClass: 9
        PackingGroup: II

        Octabromodiphenyl Ether Specification

        Octabromodiphenyl Ether (CAS NO.32536-52-0) is released by different processes into the environment, such as emissions from the manufacture of octaBDE-containing products and from the products themselves. Elevated concentrations can be found in air, water, soil, food, sediment, sludge, and dust. In the environment, "photolysis, anaerobic degradation and metabolism in biota" can cause debromination of octaBDE, which produces PBDEs with fewer bromine atoms "which may have higher toxicity and bioaccumulation potential." It may enter the body by ingestion or inhalation. It is "stored mainly in body fat" and may stay in the body for years. In an investigation carried out by the WWF, "the brominated flame retardant chemical (PBDE 153), which is a component of the penta- and octa- brominated diphenyl ether flame retardant products" was found in all blood samples of 14 ministers of health and environment of 13 European Union countries.The chemical has no proven health effects in humans; however, based on animal experiments, octaBDE may have effects on "the liver, thyroid, and neurobehavioral development."

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