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7787-69-1

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7787-69-1 Usage

Description

Cesium bromide (CsBr) is a colorless crystalline compound that is highly soluble in water and has a high refractive index. It is known for its various applications in different industries due to its unique properties.

Uses

Used in X-ray Fluorescent Screens:
Cesium bromide is used as a scintillator in X-ray fluorescent screens for its ability to convert X-ray energy into visible light, enhancing the visibility of the screen.
Used in Spectrometer Prisms:
Cesium bromide is utilized as a material for spectrometer prisms due to its high refractive index, which allows for better dispersion of light and improved resolution in spectral analysis.
Used in Absorption-cell Windows:
Cesium bromide is employed as a window material in absorption cells, where it provides a clear and durable barrier that allows for the transmission of light while maintaining the integrity of the cell contents.
Used in Scintillation Counters:
Cesium bromide (CsBr) crystals are used in scintillation counters to detect radiation. Cesium bromide's scintillating properties make it an effective material for converting high-energy radiation into visible light, which can then be measured.
Used in Pharmaceutical Industry:
Cesium bromide is used as a reagent and intermediate in the pharmaceutical industry, where it plays a role in the synthesis of various drugs and medications.
Used in Protein Crystallization:
Cesium bromide has been used in protein crystallization for anomalous scattering, which is a technique employed to determine the structure of proteins and other macromolecules at the atomic level.

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.

Check Digit Verification of cas no

The CAS Registry Mumber 7787-69-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7787-69:
(6*7)+(5*7)+(4*8)+(3*7)+(2*6)+(1*9)=151
151 % 10 = 1
So 7787-69-1 is a valid CAS Registry Number.
InChI:InChI=1/BrH.Cs/h1H;/q;+1/p-1

7787-69-1 Well-known Company Product Price

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  • (Code)Product description
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  • Alfa Aesar

  • (14289)  Cesium bromide, ultra dry, 99.9% (metals basis)   

  • 7787-69-1

  • 10g

  • 811.0CNY

  • Detail
  • Alfa Aesar

  • (14289)  Cesium bromide, ultra dry, 99.9% (metals basis)   

  • 7787-69-1

  • 50g

  • 3047.0CNY

  • Detail
  • Alfa Aesar

  • (87639)  Cesium bromide, 99.999% (metals basis)   

  • 7787-69-1

  • 10g

  • 501.0CNY

  • Detail
  • Alfa Aesar

  • (87639)  Cesium bromide, 99.999% (metals basis)   

  • 7787-69-1

  • 50g

  • 2502.0CNY

  • Detail
  • Alfa Aesar

  • (12928)  Cesium bromide, 99.9% (metals basis)   

  • 7787-69-1

  • 50g

  • 812.0CNY

  • Detail
  • Alfa Aesar

  • (12928)  Cesium bromide, 99.9% (metals basis)   

  • 7787-69-1

  • 250g

  • 3339.0CNY

  • Detail
  • Alfa Aesar

  • (13490)  Cesium bromide, 99% (metals basis)   

  • 7787-69-1

  • 50g

  • 541.0CNY

  • Detail
  • Alfa Aesar

  • (13490)  Cesium bromide, 99% (metals basis)   

  • 7787-69-1

  • 250g

  • 1979.0CNY

  • Detail
  • Aldrich

  • (429392)  Cesiumbromide  anhydrous, beads, −10 mesh, 99.999% trace metals basis

  • 7787-69-1

  • 429392-1G

  • 408.33CNY

  • Detail
  • Aldrich

  • (429392)  Cesiumbromide  anhydrous, beads, −10 mesh, 99.999% trace metals basis

  • 7787-69-1

  • 429392-10G

  • 2,041.65CNY

  • Detail
  • Aldrich

  • (203017)  Cesiumbromide  99.999% trace metals basis

  • 7787-69-1

  • 203017-10G

  • 348.66CNY

  • Detail
  • Aldrich

  • (202142)  Cesiumbromide  99.9% trace metals basis

  • 7787-69-1

  • 202142-100G

  • 2,269.80CNY

  • Detail

7787-69-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name cesium,bromide

1.2 Other means of identification

Product number -
Other names Caesium bromide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7787-69-1 SDS

7787-69-1Relevant articles and documents

Crystal growth and characterization of Eu2+ doped Cs1-xRbxCaBr3

Rebrova,Grippa, A.Yu.,Boiaryntseva,Berastegui,Gorbacheva,Pedash, V.Yu.,Galkin,Kononets,Datsko, Yu.N.,Cherginets

, (2020)

A series of Eu2+ doped Cs1-xRbxCaBr3 solid solutions were grown using the Bridgman-Stockbarger technique. Their photoluminescence and scintillation properties are studied. Upon optical and X-ray excitation, the Cs1-xRbxCaBr3 and Eu2+ activated samples show a band, which can be attributed to the 5d-4f transition in Eu2+. The decay time constants become shorter with increasing Rb content and lie in the range of 3–4 μs. The scintillation performance of solid solutions Cs1-xRbxCa0.95Eu0.05Br3 is improved compared with the end members (CsCa0.95Eu0.05Br3 and RbCa0.95Eu0.05Br3). The best energy resolution of 6.4% at 662 keV was determined for Cs0.2Rb0.8Ca0.95Eu0.05Br3, and the best light yield, equal to 61.2% of NaI:Tl, was demonstrated by Cs0.4Rb0.6Ca0.95Eu0.05Br3.

Hydrothermal Crystal Growth of Mixed Valence Cs2SbBr6

Combs, Victoria E.,Oswald, Iain W. H.,Neilson, James R.

, p. 4090 - 4094 (2019)

Mixed valence perovskite materials present an opportunity to understand how structural motifs influence electronic properties in semiconducting materials. Here, we report the preparation of high-quality single crystals of the mixed valence compound Cssub

Ion Exchange of Layered Alkali Titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with Alkali Halides by the Solid-State Reactions at Room Temperature

Ogawa, Makoto,Saothayanun, Taya Ko,Sirinakorn, Thipwipa Tip

, p. 4024 - 4029 (2020/04/08)

Ion exchange of layered alkali titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with several alkali metal halides surprisingly proceeded in the solid-state at room temperature. The reaction was governed by thermodynamic parameters and was completed within a shorter time when the titanates with a smaller particle size were employed. On the other hand, the required time for the ion exchange was shorter in the cases of Cs2Ti5O11 than those of K2Ti4O9 irrespective of the particle size of the titanates, suggesting faster diffusion of the interlayer cation in the titanate with lower layer charge density.

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