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IRON (III) BROMIDE

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IRON (III) BROMIDE Basic information

Product Name:
IRON (III) BROMIDE
Synonyms:
  • IRON BROMIDE
  • IRON (III) BROMIDE
  • FERRIC BROMIDE
  • iron tribromide
  • IRON(III) BROMIDE ANHYDROUS
  • Iron(III)bromide,anhydrous,99%
  • Iron(iii) bromide, 90+%
  • Iron bromide(FeBr3)
CAS:
10031-26-2
MF:
Br3Fe
MW:
295.56
EINECS:
233-089-1
Product Categories:
  • metal halide
  • bc0001
Mol File:
10031-26-2.mol
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IRON (III) BROMIDE Chemical Properties

Melting point:
200 °C
Density 
4.500
storage temp. 
Inert atmosphere,Room Temperature
solubility 
soluble in ethanol, ethyl ether
form 
Powder
color 
White to yellow-beige
Water Solubility 
Soluble in water, ether and alcohol.
Sensitive 
Hygroscopic
Merck 
14,4018
Exposure limits
ACGIH: TWA 1 mg/m3
NIOSH: TWA 1 mg/m3
Stability:
hygroscopic
InChIKey
FEONEKOZSGPOFN-UHFFFAOYSA-K
CAS DataBase Reference
10031-26-2(CAS DataBase Reference)
EPA Substance Registry System
Iron bromide (FeBr3) (10031-26-2)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39
RIDADR 
UN3260
WGK Germany 
3
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
28275900

MSDS

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IRON (III) BROMIDE Usage And Synthesis

Preparation

Iron(III) bromide is prepared by the action of bromine with iron filings:
2Fe + 3Br2 → 2FeBr3
The compound should be stored in dark bottles protected from air or light. It also may be obtained by double decompostion reactions between a ferric salt and a bromide (alkali metal bromide) in aqueous solution followed by evaporation and crystallization:
Fe2(SO4)3 + LiBr → 2FeBr3 + 3Li2SO4
It also may be prepared in high yield by photochemical reaction of dibromoirontetracarbonyl with bromine in hexane (Yoon, K.B. and J.K. Kochi.
1990. Inorg. Chem. 29, pp. 869):
(CO)4FeBr2 + ½ Br2 → FeBr3 + 4CO

Chemical Properties

Brown-red crystalline powder

Physical properties

Dark red hexagonal crystal; hygroscopic; partially decomposes to FeBr2,losing some bromine on exposure to air or light; density 4.50 g/cm3; decomposes on heating; soluble in water, ethanol, and ether.

Uses

Iron(III) bromide is used as a Lewis acid catalyst in the halogenation of aromatic compounds. It is also used in the preparation of 2,5-dibromo-4-aryl-1,3-pentadiene by reacting with homoallenic bromohydrin.

Uses

Catalyst for organic reactions, particularly in bromination of aromatic Compounds.

General Description

This product has been enhanced for catalytic efficiency.

Purification Methods

Sublime it in a sealed tube with Br2 at 120o-200o. [Lux in Handbook of Preparative Inorganic Chemistry (Ed.Brauer) Academic Press Vol II p 1494 1965.]

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