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203017

Sigma-Aldrich

Cesium bromide

99.999% trace metals basis

Synonym(s):

Cesium monobromide

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About This Item

Linear Formula:
CsBr
CAS Number:
7787-69-1
Molecular Weight:
212.81
EC Number:
232-130-0
MDL number:
MFCD00010954
UNSPSC Code:
12352302
PubChem Substance ID:
24852139
NACRES:
NA.23

Assay

99.999% trace metals basis

form

powder and chunks

impurities

≤15.0 ppm Trace Metal Analysis

mp

636 °C (lit.)

density

4.44 g/mL at 25 °C (lit.)

SMILES string

[Br-].[Cs+]

InChI

1S/BrH.Cs/h1H;/q;+1/p-1

InChI key

LYQFWZFBNBDLEO-UHFFFAOYSA-M

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General description

Cesium bromide (CsBr) is an inorganic compound moderately soluble in water and exhibits hygroscopic properties. CsBr crystals are utilized in scintillation counters for detecting radiation due to their effective scintillation properties. It is also used in optics as a beam splitter component in wide-band spectrophotometers.

Application

Cesium bromide can be used as:      
  • An electrolyte additives to improve the cycling efficiency of lithium and graphite anodes in lithium-ion batteries. The cesium cations can help control the interfacial chemistry on the anode, leading to enhanced performance.     
  • An additive to enhance the efficiency and stability of CsPbI2Br perovskite solar cells by passivating defects, improving charge transport properties, and contributing to higher power conversion efficiencies.
  • As a precursor material to synthesize cesium lead bromide (CsPbBr3) perovskite, which is then utilized as an electrode material in a symmetric supercapacitor.  
  • As a precursor to prepare thermal neutron imaging plates.     
  • As a precursor to synthesize lead-free CsBr: Eu2+ nanocrystals for fabricating white LEDs.    
  • As an additive to prepare CsI-based scintillators. Alloying with cesium bromide increases the yield limit and microhardness of CsI crystals.

Signal Word

Warning

Hazard Statements

H302,H361fd,H400

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Repr. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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