5436-43-1

Basic information

• Product Name: 2,2',4,4'-TETRABROMODIPHENYL ETHER
• Synonyms: 2,2',4,4'-TETRABROMODIPHENYL ETHER;PBDE-47;PBDECONGENER47;BDE-47;2,2μ,4,4μ-TetraBDE, 2,2μ,4,4μ-Tetrabromodiphenyl ether solution, PBDE 47;BDE No 47 solution;2,2’,4,4'Tetrabromodiphenyl ether,50ug/ml in Isooctane;1,1'-Oxybis(2,4-dibromobenzene)
• CAS NO: 5436-43-1
• Molecular Formula: C₁₂H₆Br₄O
• Molecular Weight: 485.79144
• EINECS: 208-759-1
• Mol File: 5436-43-1.mol
• Article Data: 6

Chemical Properties

• Melting Point: 83-84℃ (ethanol )
• Boiling Point: 395.5°Cat760mmHg
• Flash Point: -12 °C
• Appearance: /
• Density: 2.161g/cm³
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 2,2',4,4'-TETRABROMODIPHENYL ETHER(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2',4,4'-TETRABROMODIPHENYL ETHER(5436-43-1)
• EPA Substance Registry System: 2,2',4,4'-TETRABROMODIPHENYL ETHER(5436-43-1)

Safety Data

• Hazard Codes: F,Xn,N
• Statements: 11-38-50/53-65-67
• Safety Statements: 60-61-62-33-29-16-9
• RIDADR: UN 1262 3/PG 2
• WGK Germany: 2
• Hazardous Substances Data: 5436-43-1(Hazardous Substances Data)

Usage

Uses

2,4,2'',4''-Tetrabromodiphenyl Ether, is one of the Polybrominated di-Ph ethers (PBDEs), which are a new class of global, persistent, and toxic contaminants. It is used as Brominated flame retardants (BFRs) in various consumer products. One of the new POPs under the Stockholm Convention

Upstream product

• 101-84-8 diphenylether 
• 615-58-7 2,4-dibromophenol 
• 7726-95-6 bromine 
• 7553-56-2 iodine 
• 108-36-1 1,3-dibromobenzene 
• 51452-87-0 2,2'-dibromodiphenyl ether 

Downstream Products

• 101-84-8 diphenylether 
• 60348-60-9 2,2',4,4',5-pentrabromodiphenyl ether 

Relevant articles and documents

BROMINATION OF TRIPHENYLOXONIUM CATIONS

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PHENOXASILINE BASED COMPOUNDS FOR ELECTRONIC APPLICATION

Organic electronics applications, especially an organic light-emitting diode (OLED), an organic solar cell (organic photovoltaics) or a switching element such as an organic transistor, for example an organic FET (Field Effect Transistor) and an organic TFT (Thin Film Transistor), comprising at least one substituted phenoxasiline derivative, a organic semiconductor layer, a host material, electron/hole/exciton blocking material or electron/hole injection material comprising at least one substituted phenoxasiline derivative, the use of a substituted phenoxasiline derivative in organic electronics applications, an organic light-emitting diode, wherein at least one substituted phenoxasiline derivative is present in the electron/hole/exciton blocking layer, the electron/hole injection layer and/or the light-emitting layer, a light-emitting layer, an electron/hole/exciton blocking layer and an electron/hole injection layer comprising at least one substituted phenoxasiline derivative and a device selected from the group consisting of stationary visual display units, mobile visual display units; illumination units; keyboards; garments; furniture and wallpaper comprising at least one organic light-emitting diode, at least one light-emitting layer, at least one electron/hole/exciton blocking layer and/or at least one electron/hole injection layer according to the present invention.

Synthesis and characterization of 32 polybrominated diphenyl ethers

Polybrominated diphenyl ethers (PBDEs) are widely used as additive flame retardants in, for example, textiles, computers, television sets, and other electrical appliances. present also in humans. The environmental levels of the PBDEs are, however, still in general lower than those of polychlorinated biphenyls (PCBs). However, while the levels of PCBs generally are decreasing, those of the PBDEs are increasing in, for example, human milk. In the present study 32 individual PBDE congeners were synthesized and characterized. Physicochemical parameters including melting points and UV, 1H NMR, and mass spectra are reported Twenty-nine monobrominated to heptabrominated diphenyl ethers were synthesized by the couping between four diphenyliodonium salts and nine phenolates. One tetrabromodiphenyl ether and two hexabromodiphenyl ethers were synthesized by bromination of two different PBDEs. Twenty-one of the PBDEs and two of the iodonium salts, 2,2′,4,4′-tetrabromodiphenyliodonium chloride and 3,3′,4,4′-tatrabromodiphenyliodonium chloride, are to the authors' knowledge described for the first time. These synthesized reference compounds will aid in the identification and quantification of PBDEs present in environmental samples and will allow further assessment of PBDE toxicity.