85446-17-9

Basic information

• Product Name: 1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE)
• Synonyms: 1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE);2,2',3,3',4,4',5,5'-Octabromodiphenyl ether;2,3,4,5,2',3',4',5'-Octabromodiphenyl ether;BDE-194;Bis(2,3,4,5-tetrabromophenyl) ether
• CAS NO: 85446-17-9
• Molecular Formula: C12H2Br8O
• Molecular Weight: 801.37568
• Mol File: 85446-17-9.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE)(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE)(85446-17-9)
• EPA Substance Registry System: 1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE)(85446-17-9)

Safety Data

• Hazardous Substances Data: 85446-17-9(Hazardous Substances Data)

Usage

Description

1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE), also known as PBDE 194, is a persistent organic pollutant. It is a related compound of PBDE 37 (P215195), which is a flame retardant commonly used in consumer products.

Uses

Used in Flame Retardant Industry:
1,1'-OXYBIS(2,3,4,5-TETRABROMOBENZENE) is used as a flame retardant in various consumer products for its ability to slow down the spread of fire and reduce the risk of ignition.
However, it is important to note that PBDE 194 is a persistent organic pollutant, which means it can accumulate in the environment and pose potential health risks. As a result, there is a growing concern about its use and efforts are being made to find safer alternatives for flame retardants.

Upstream product

• 1163-19-5 2,2',3,3',4,4',5,5',6,6'-Decabromodiphenyl ether 
• 4526-58-3 2,3,4,5-tetrabromophenol 

Relevant articles and documents

Solid-phase synthetic method and application of polybrominated diphenyl ether monomer

The invention discloses a solid-phase synthetic method and application of a polybrominated diphenyl ether monomer. According to the solid-phase synthetic method and the application, the problems of an existing polybrominated diphenyl ether synthetic method that the reaction time is long, the reagent corrosivity is large, the postprocessing is complicated, and special equipment is required in the prior arts are solved. The solid-phase synthetic method has the beneficial effects that by utilizing a method of synthesizing polybrominated diphenyl ether through catalysis of solid superacid under a grinding condition, strong-base and strong-acid liquid reagents are not used, the safety is high, and the cleanness and the environmental protection are achieved; the synthesis time is 10-30 minutes, and compared with an ''iodonium salt-coupling two-step reaction method'', the reaction time is greatly shortened. According to the technical scheme, the solid-phase synthetic method comprises the step of enabling bromophenol to generate dehydration coupling reaction under the catalysis of solid superacid, so as to obtain the polybrominated diphenyl ether monomer.

Synthesis of octabrominated diphenyl ethers from aminodiphenyl ethers

Polybrominated diphenyl ethers (PBDEs) are additive brominated flame retardants (BFRs), which have become widespread pollutants in abiotic and biotic environments including man. Tetra- to hexaBDEs and decaBDE are the most common environmental PBDE contaminants. Congeners of octabromodiphenyl ethers (octaBDEs) originate from used industrial OctaBDE mixtures and from transformation products of the high-volume industrial BFR mixture "DecaBDE", which most exclusively consists of perbrominated diphenyl ether (BDE-209). The objective of the present work was to develop methods for the synthesis of authentic octaBDE congeners in order to make them available as standards for analytical, toxicological, and stability studies, as well as studies concerning physical-chemical properties. The syntheses of six octaBDEs, 2,2′,3,3′,4,4′,5,5′-octabromodiphenyl ether (BDE-194), 2,2′,3,3′,4,4′,5,6′-octabromodiphenyl ether (BDE-196), 2,2′,3,3′,4,5,5′,6-octabromodiphenyl ether (BDE-198), 2,2′,3,3′,4,5′,6,6′-octabromodiphenyl ether (BDE-201), 2,2′,3,3′,5,5′,6,6′-octabromodiphenyl ether (BDE-202), and 2,2′,3,4,4′,5,6,6′-octabromdipheny ether (BDE-204), are described, of which BDE-204 was prepared via two different pathways. Syntheses of BDE-198, BDE-201, BDE-202, and BDE-204 are based on octabromination of mono- or diaminodiphenyl ethers followed by diazotization and reduction of the amino group(s). BDE-194 and BDE-196 were prepared by bromination of 3,3′,4,4′,5,5′-hexabromodiphenyl ether (BDE-169) and 2,3,3′,4,4′,5′,6-heptabromodiphenyl ether (BDE-191), respectively, and BDE-169 and BDE-191 were prepared from 4,4′- diaminodiphenyl ether and 3,4′-diamiodiphenyl ether, respectively. The synthesized PBDE congeners are described by 1H NMR, 13C NMR, electron ionization mass spectra, and their melting points.