RUBIDIUM BROMIDE
Synonym(s):Rubidium monobromide
- CAS NO.:7789-39-1
- Empirical Formula: BrRb
- Molecular Weight: 165.37
- MDL number: MFCD00011186
- EINECS: 232-162-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-05-30 16:33:02
What is RUBIDIUM BROMIDE?
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
The Uses of RUBIDIUM BROMIDE
Rubidium bromide is used in infrared optics.
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.
Properties of RUBIDIUM BROMIDE
Melting point: | 693 °C |
Boiling point: | 1340 °C |
Density | 3.35 g/mL at 25 °C (lit.) |
refractive index | 1.5530 |
Flash point: | 1340°C |
form | crystal |
Specific Gravity | 3.35 |
color | white |
Water Solubility | Soluble in water |
Sensitive | Hygroscopic |
Merck | 14,8283 |
Dielectric constant | 4.8499999999999996 |
Stability: | Stable. Incompatible with strong acids. |
CAS DataBase Reference | 7789-39-1(CAS DataBase Reference) |
EPA Substance Registry System | Rubidium bromide (RbBr) (7789-39-1) |
Safety information for RUBIDIUM BROMIDE
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. |
Computed Descriptors for RUBIDIUM BROMIDE
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