57422-77-2

Basic information

• Product Name: 2,5-DIBROMOBIPHENYL
• Synonyms: 2,5-DIBROMOBIPHENYL;PBB NO 9;pbb 9;2,5-Dibromo-1,1'-biphenyl
• CAS NO: 57422-77-2
• Molecular Formula: C₁₂H₈Br₂
• Molecular Weight: 312
• Mol File: 57422-77-2.mol
• Article Data: 1

Chemical Properties

• Melting Point: 40-42 °C
• Boiling Point: 332 °C at 760 mmHg
• Flash Point: 179.4 °C
• Appearance: /
• Density: 1.667 g/cm³
• Vapor Pressure: 0.000289mmHg at 25°C
• Refractive Index: 1.625
• CAS DataBase Reference: 2,5-DIBROMOBIPHENYL(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-DIBROMOBIPHENYL(57422-77-2)
• EPA Substance Registry System: 2,5-DIBROMOBIPHENYL(57422-77-2)

Safety Data

• Hazardous Substances Data: 57422-77-2(Hazardous Substances Data)

Usage

Uses

PBB 9 is a related compound of PBB 37 (P215150), a brominated biphenyls that can be used as a flame retardant and often incorporated into consumer products including appliances, electronics and plastics.

InChI:InChI=1/C12H8Br2/c13-10-6-7-12(14)11(8-10)9-4-2-1-3-5-9/h1-8H

Upstream product

• 71-43-2 benzene 

Downstream Products

• 610-71-9 2,5-dibromobenzoic acid 
• 92-52-4 biphenyl 
• 2052-07-5 2-Bromobiphenyl 

Relevant articles and documents

Reactivity of alkali and alkaline earth metal tetrafluorobromates towards aromatic compounds and pyridine

The bromination activity of tetrafluorobromates of alkali and alkali-earth metals increases in the order KBrF4, CsBrF4, RbBrF4and Ba(BrF4)2. The most active tetrafluorobromate—Ba(BrF4)2is able to selectively brominate the deactivated aromatic compounds nitrobenzene and 4-nitrotoluene, but not the activated compounds benzene and toluene. In all cases bromination of methyl groups of methylbenzenes does not occur. Ba(BrF4)2forms the known complex C6H5N·BrF3when reacted with pyridine. Due to dilution by inert BaF2, this pyridine-based complex is air stable and can be considered as safer and more convenient reagent in comparison with the original fluorobromates; it can selectively brominate benzene and toluene in contrast with tetrafluorobromates.