3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||136.90 g/mol|
|Appearance||straw-coloured liquid |
|Density||2.803 g/cm3 |
|Melting point||8.77 °C (47.79 °F; 281.92 K)|
|Boiling point||125.72 °C (258.30 °F; 398.87 K)|
|Reacts with water|
|Solubility in sulfuric acid||very soluble|
|Main hazards||dangerously sensitive to water, source of HF|
|Safety data sheet||See: data page|
|GHS Signal word||Danger|
|H271, H330, H314, H373|
|P102, P103, P210, P220, P221, P260, P264, P271, P280, P283, P284, P301+310, P301+330+331, P303+361+353, P304+312, P306+360, P308+313, P370+380, P340, P363, P305+351+338+310|
|NFPA 704 (fire diamond)|
|Supplementary data page|
|Refractive index (n),|
Dielectric constant (εr), etc.
|UV, IR, NMR, MS|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Bromine trifluoride is an interhalogen compound with the formula BrF3. It is a straw-coloured liquid with a pungent odor. It is soluble in sulfuric acid but reacts violently with water and organic compounds. It is a powerful fluorinating agent and an ionizing inorganic solvent. It is used to produce uranium hexafluoride (UF6) in the processing and reprocessing of nuclear fuel.
Like ClF3 and IF3, the BrF3 molecule is T-shaped and planar. In the VSEPR formalism, the bromine center is assigned two electron pairs. The distance from the bromine each axial fluorine is 1.81 Å and to the equatorial fluorine is 1.72 Å. The angle between an axial fluorine and the equatorial fluorine is slightly smaller than 90° — the 86.2° angle observed is due to the repulsion generated by the electron pairs being greater than that of the Br-F bonds.
Many ionic fluorides dissolve readily in BrF3 forming fluoroanions:
Covalent fluorides may also react as fluoride acceptor, which make them acidic in this solvent:
BrF3 + SbF5 → [BrF2+][SbF6−]