CAS number : 7789-39-1
Molecular weight :165.37
Molecular formula/chemical symbol :RbBr
Description :
Rubidium bromide is the bromide of rubidium. It has a NaCl crystal structure, with a lattice constant of 685 picometres.
There are several methods for synthesising rubidium bromide. One involves reacting rubidium hydroxide with hydrobromic acid:
RbOH + HBr → RbBr + H2O
Another method is to neutralize rubidium carbonate with hydrobromic acid:
Rb2CO3 + 2HBr → 2RbBr + H2O + CO2
Rubidium metal would react directly with bromine to form RbBr, but this is not a sensible production method since rubidium metal is substantially more expensive than the carbonate or hydroxide; moreover, the reaction would be explosive.
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Rubidium bromide |
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IUPAC name[hide] Rubidium bromide |
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Other names[hide] Rubidium(I) bromide |
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Identifiers |
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74217 |
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Jmol-3D images |
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Properties |
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RbBr |
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165.372 g/mol |
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Appearance |
white crystalline solid |
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3.350 g/cm3 |
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693 °C, 966 K, 1279 °F |
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1340 °C, 1613 K, 2444 °F |
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Solubility in water |
98 g/100 mL |
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Hazards |
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EU Index |
Not listed |
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Non-flammable |
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Related compounds |
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Other anions |
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Other cations |
Lithium
bromide |
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USES :
Manufacture of other of rubidium compounds and chemical analytical reagent
Report :
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Product name |
Rubidium bromide |
CAS：7789-39-1 |
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Description |
white crystalline solid |
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TEST ITEMS |
TEST RESULTS |
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RbBr |
≥99.5 % |
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Ba |
≤0.01 % |
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Pb |
≤0.05 % |
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SO42- |
≤0.05 % |
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Ca |
≤0.002 % |
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K |
≤0.04 % |
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Al |
≤0.001 % |
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Cl- |
≤0.03 % |
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