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Cesium bromide

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Cesium bromide Basic information

Product Name:
Cesium bromide
Synonyms:
  • CESIUM BROMIDE, 99.9%, PURE
  • Cesium bromide, pure
  • Caesium Bromide 99.9%
  • Cesium bromide (metals basis)
  • Cesium bromide/ 99.99%
  • Cesium bromide, pure, 99.9%
  • CESIUM BROMIDE, 99.9%
  • cesium bromide, ultra dry
CAS:
7787-69-1
MF:
BrCs
MW:
212.81
EINECS:
232-130-0
Product Categories:
  • Cesium
  • Cesium Salts
  • Chemical Synthesis
  • Crystal Grade Inorganics
  • Cs
  • Inorganic Salts
  • Analytical Reagents
  • Atomic Absorption Spectroscopy (AAS)
  • Analytical Reagents for General Use
  • C-D, Puriss p.a.
  • Puriss p.a.
  • metal halide
  • Materials Science
  • Metal and Ceramic Science
  • Cesium Salts
  • CesiumMetal and Ceramic Science
  • Crystal Grade Inorganics
  • Inorganic Salts
  • Salts
  • Synthetic Reagents
  • Digestion Reagents
  • Pure Salts for Melting Digestions (Trace SELECT)Analytical/Chromatography
  • Trace Analysis Reagents
  • CesiumBiochemicals and Reagents
  • AlphabeticalSynthetic Reagents
  • Biochemicals and Reagents
  • Density Gradient
  • Salts of Alkali Metals
  • Synthetic Reagents
  • Ultra-High Purity Materials
Mol File:
7787-69-1.mol
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Cesium bromide Chemical Properties

Melting point:
636 °C (lit.)
Boiling point:
1300 °C
Density 
4.44 g/mL at 25 °C (lit.)
refractive index 
1.6984
Flash point:
1300°C
solubility 
H2O: 3 M at 20 °C, clear, colorless
form 
beads
color 
White
Specific Gravity
4.44
Water Solubility 
55 g/100 mL (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,2009
Stability:
Stable.
CAS DataBase Reference
7787-69-1(CAS DataBase Reference)
NIST Chemistry Reference
Cesium bromide(7787-69-1)
EPA Substance Registry System
Cesium bromide (CsBr) (7787-69-1)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
RTECS 
FK9275000
TSCA 
Yes
HS Code 
28275900
Toxicity
LD50 i.p. in rats: 1.4 g/kg (Cochran)

MSDS

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Cesium bromide Usage And Synthesis

Description

Cesium bromide is a colorless crystal with the formula CsBr. It is a moderately water soluble crystalline Cesium source that decomposes to Cesium oxide on heating. Most metal bromine compounds are water-soluble and are used in water treatment, chemical analysis, and ultra-high purity for certain crystal growth applications.

Chemical Properties

Cesium bromide is a colourless crystals. It has been used in protein crystallization for anamolous scattering.

Uses

In x-ray fluorescent screens, spectrometer prisms, absorption-cell windows.

Uses

Cesium bromide (CsBr) crystals are used in scintillation counters to detect radiation. The compound is also used to coat the inside of fluorescent screens.

Uses

Cesium bromide is used as reagent, intermediate in pharmaceuticals.

Production Methods

Single crystals Cesium bromide can be synthesized by the Kyropoulus method or the Stockbarger method. One can polish the crystal using pure alcohol.

Preparation

Caesium bromide can be prepared via following reactions:
Neutralization:
CsOH (aq) + HBr (aq) → CsBr (aq) + H2O (l)
Cs2(CO3) (aq) + 2 HBr (aq) → 2 CsBr (aq) + H2O (l) + CO2 (g)
Direct synthesis:
2 Cs (s) + Br2 (g) → 2 CsBr (s)
The direct synthesis is a vigorous reaction of caesium with other halogens. Due to its high cost, it is not used for preparation.

Safety Profile

Moderately toxic by intraperitoneal route. See also CESIUM and BROMIDES. When heated to decomposition it emits toxic fumes of Br-.

Purification Methods

It is very soluble in H2O, soluble in EtOH but insoluble in Me2CO. Dissolve it in the minimum volume of H2O, filter and precipitate it by adding Me2CO. Filter off the solid and dry it at 100o. Also recrystallise it from water (0.8mL/g) by partial evaporation in a desiccator.

Structure and conformation

The space lattice of CsBr(Cesium bromide) belongs to the cubic system, and its cesium chloride structure has a lattice constant of a=0.429 nm.

Cesium bromideSupplier

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