Nomenclature
CAS number: 10031-26-2
Br
3Fe; mol wt 295.56.
Br 81.10%, Fe 18.89%.
FeBr
3.
Description and references
Prepn from Fe and Br2: Gregory,
Thackrey, J. Am. Chem. Soc. 72, 3176 (1950); Gregory, ibid. 73, 472 (1951); from Fe2(SO4)3 and LiBr: Lieser, Elias, Z. Anorg.
Allg. Chem. 316, 208 (1962).
Properties
Dark-red or black hexagonal, rhombic plates.
Very hygroscopic. Loses some Br2 on exposure to air and
light. Sol in water, alcohol, ether, acetic acid; slightly sol in
liquid NH3; aq soln dec to FeBr2 + Br2 on boiling. Keep cool, well-closed and protected
from light.Caution
Irritant.Use
Catalyst for organic reactions, particularly in
bromination of aromatic compds.