IRON (III) BROMIDE Property

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)

Safety

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

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H290May be corrosive to metals

H314Causes severe skin burns and eye damage

Precautionary statements

P234Keep only in original container.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

IRON (III) BROMIDE Chemical Properties,Usage,Production

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.]