| Identification | More | [Name]
RUBIDIUM BROMIDE | [CAS]
7789-39-1 | [Synonyms]
RUBIDIUM BROMIDE
RbBr
Rubidium bromide (RbBr)
rubidiumbromide(rbbr)
RUBIDIUM BROMIDE, 99.7%
RUBIDIUM BROMIDE (99%-RB)
RUBIDIUM BROMIDE, 99.8% (METALS BASIS)
RUBIDIUM BROMIDE 99+%
Rubidium monobromide
RUBIDIUM BROMIDE, 99.9%
Rubidiumbromide(99.9%-Rb)
RUBIDIUM BROMIDE, 99%, PURE
Rubidium bromide, pure | [EINECS(EC#)]
232-162-5 | [Molecular Formula]
BrRb | [MDL Number]
MFCD00011186 | [Molecular Weight]
165.37 | [MOL File]
7789-39-1.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [Melting point ]
693 °C
| [Boiling point ]
1340 °C
| [density ]
3.35 g/mL at 25 °C(lit.)
| [refractive index ]
1.5530 | [Fp ]
1340°C | [form ]
crystal | [color ]
white | [Specific Gravity]
3.35 | [Stability:]
Stable. Incompatible with strong acids. | [Water Solubility ]
Soluble in water | [Specific Heat Capacity]
Cp(crystal):0.319284J/(g·K),at 25℃ | [Sensitive ]
Hygroscopic | [Merck ]
14,8283 | [Dielectric constant]
4.8499999999999996 | [InChI]
1S/BrH.Rb/h1H;/q;+1/p-1 | [InChIKey]
JAAGVIUFBAHDMA-UHFFFAOYSA-M | [SMILES]
[Br-].[Rb+] | [CAS DataBase Reference]
7789-39-1(CAS DataBase Reference) | [EPA Substance Registry System]
Rubidium bromide (RbBr) (7789-39-1) |
| Hazard Information | Back Directory | [Description]
Rubidium bromide (RbBr) is a hygroscopic material, which is generally similar to the other rubidium halides.
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 + 2 HBr → 2 RbBr + 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. | [Chemical Properties]
white crystalline powder | [Uses]
Rubidium bromide is used in infrared optics. | [Synthesis]
There are many ways to synthesize rubidium bromide. One is the reaction of rubidium hydroxide with hydrogen bromide: RbOH + HBr → RbBr + H2O ;
Another method is to neutralize rubidium carbonate with hydrogen bromide: Rb2CO3 + 2HBr → 2 | [Purification Methods]
The bromide is a white crystalline powder which crystallises from H2O (solubility: 50% in cold and 67% in boiling H2O to give a neutral solution). It also crystallises from near-boiling water (0.5mL/g) by cooling to 0o. |
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