3D model (JSmol)
|Molar mass||295.56 g mol−1|
|Density||4.50 g cm−3|
|Melting point||200 °C (392 °F; 473 K) (decomposes)|
|R-3, No. 148|
|S-phrases (outdated)||S26 S37/39|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Iron(III) bromide is the chemical compound with the formula FeBr3. Also known as ferric bromide, this red-brown odorless compound is used as a Lewis acid catalyst in the halogenation of aromatic compounds. It dissolves in water to give acidic solutions.
Structure, synthesis and basic properties
- 2 Fe + 3 Br2 → 2 FeBr3
Above 200 °C, FeBr3 decomposes to ferrous bromide:
- 2FeBr3 → 2FeBr2 + Br2
Ferric bromide is occasional use as an oxidant in organic chemistry, e.g. for the conversion of alcohols to ketones. It is used as a Lewis acidic catalyst for bromination of aromatic compounds. For the latter applications, it is often generated in situ.
- Iron(II) bromide, the lower bromide of iron