Ferric Bromide
Structural Formula Vector Image
Title: Ferric Bromide
CAS Registry Number: 10031-26-2
Molecular Formula: Br3Fe
Molecular Weight: 295.56
Percent Composition: Br 81.10%, Fe 18.89%
Line Formula: FeBr3
Literature 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 liq 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.

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