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Cesium Bromide

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Cesium Bromide
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(3N) 99.9% Cesium Bromide
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(4N) 99.99% Cesium Bromide
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(5N) 99.999% Cesium Bromide
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Cesium Bromide Properties (Theoretical)

Compound Formula BrCs
Molecular Weight 212.81
Appearance White
Melting Point 640 °C (1180 °F)
Boiling Point 1,300° C (2,372° F)
Density 4.4 g/cm3
Refractive Index 1.6
Poisson's Ratio 0.28
Specific Heat 270 J/kg-K
Thermal Conductivity 0.9 W/m-K
Thermal Expansion 48 µm/m-K
Young's Modulus 16 GPa
Exact Mass 211.823785
Monoisotopic Mass 211.823785

Cesium Bromide Health & Safety Information

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Risk Codes 36/37/38
Safety Statements 26-36
RTECS Number FK9275000
Transport Information N/A
WGK Germany 3

About Cesium Bromide

Bromide IonCesium Bromide is a moderately water soluble crystalline Cesium source that decomposes to Cesium oxide on heating. Most metal bromide compounds are water soluble for uses in water treatment, chemical analysis and in ultra high purity for certain crystal growth applications. The bromide ion in an aqueous solution can be detected by adding carbon disulfide (CS2) and chlorine. Cesium Bromide is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale elemental powders and suspensions, as alternative high surface area forms, may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Cesium Bromide Synonyms

Caesium bromide, Caesiumbromide, cesiumbromide(csbr)

Chemical Identifiers

Linear Formula CsBr
MDL Number MFCD00000117
EC No. 232-130-0
Beilstein Registry No. N/A
Pubchem CID 24592
IUPAC Name cesium bromide
SMILES [Cs+].[Br-]
InchI Identifier InChI=1S/BrH.Cs/h1H;/q;+1/p-1

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Bromine products. Bromine (atomic symbol: Br, atomic number: 35) is a Block P, Group 17, Period 4 element. Its electron configuration is [Ar]4s23d104p5. The bromine atom has a radius of 102 pm and its Van der Waals radius is 183 pm. In its elemental form, CAS 7726-95-6, bromine has a red-brown appearance. Bromine does not occur by itself in nature, it is found as colorless soluble crystalline mineral halide salts. Bromine was discovered and first isolated by Antoine Jérôme Balard and Leopold Gmelin in 1825-1826.

See more Cesium products. Cesium (or Caesium) (atomic symbol: Ce, atomic number: 55) is a Block S, Group 1, Period 6 element with an atomic weight of 132.9054519. The number of electrons in each of Cesium's shells is 2, 8, 18, 18, 8, 1 and its electron configuration is [Xe] 6s1. Cesium Bohr ModelThe cesium atom has a radius of 265 pm and a Van der Waals radius of 343 pm. Cesium is a member of the alkali group of metals.It is one of three metals that occur as a liquid at room temperature, the others being mercury and gallium. Elemental CesiumCesium's main commercial source is pollucite ore; however, it is also found in beryl, avogadrite, pezzottaite, and londonite. Cesium was discovered by Robert Bunsen and Gustav Kirchhoff in 1860 and first isolated by Carl Setterberg in 1882. In its elemental form, cesium has a silvery gold appearance. The word Cesium originates from the Latin word "caesius," meaning "sky blue," which refers to the vibrant blue lines in its spectrum.


May 26, 2018
Los Angeles, CA
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