Names | |
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IUPAC name
Cesium bromide
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Other names
Cesium bromide,
Caesium(I) bromide | |
Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.029.209 |
EC Number |
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PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
CsBr | |
Molar mass | 212.809 g/mol[1] |
Appearance | White solid |
Density | 4.43 g/cm3[1] |
Melting point | 636 °C (1,177 °F; 909 K)[1] |
Boiling point | 1,300 °C (2,370 °F; 1,570 K)[1] |
1230 g/L (25 °C)[1] Disputed.
420 g/L (11 °C) See References | |
-67.2·10−6 cm3/mol[2] | |
Refractive index (nD)
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1.8047 (0.3 μm) 1.6974 (0.59 μm) 1.6861 (0.75 μm) 1.6784 (1 μm) 1.6678 (5 μm) 1.6439 (20 μm)[3] |
Structure | |
CsCl, cP2 | |
Pm3m, No. 221[4] | |
a = 0.4291 nm
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Lattice volume (V)
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0.0790 nm3 |
Formula units (Z)
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1 |
Cubic (Cs+) Cubic (Br−) | |
Hazards | |
GHS labelling: | |
Warning | |
H302, H315, H319, H335 | |
P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1400 mg/kg (oral, rat)[5] |
Related compounds | |
Other anions
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Caesium fluoride Caesium chloride Caesium iodide Caesium astatide |
Other cations
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Sodium bromide Potassium bromide Rubidium bromide Francium bromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Caesium bromide or cesium bromide is an ionic compound of caesium and bromine with the chemical formula CsBr. It is a white or transparent solid with melting point at 636 °C that readily dissolves in water. Its bulk crystals have the cubic CsCl structure, but the structure changes to the rocksalt type in nanometer-thin film grown on mica, LiF, KBr or NaCl substrates.[6]