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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

Compound Formula


Molecular Weight




Melting Point

640 °C (1180 °F)

Boiling Point

1,300° C (2,372° F)


4.4 g/cm3

Exact Mass


Monoisotopic Mass


Refractive Index


Thermal Expansion

48 µm/m-K

Thermal Conductivity

0.9 W/m-K

Young's Modulus

16 GPa

Poisson's Ratio


Specific Heat

270 J/kg-K

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)

Cesium Bromide Chemical Identifiers

Linear Formula


Pubchem CID


MDL Number


EC No.


Beilstein Registry No.



cesium bromide



InchI Identifier


InchI Key


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.

Recent Research

Solution-Processed Cesium Hexabromopalladate(IV), Cs2PdBr6, for Optoelectronic Applications., Sakai, Nobuya, Haghighirad Amir Abbas, Filip Marina R., Nayak Pabitra K., Nayak Simantini, Ramadan Alexandra, Wang Zhiping, Giustino Feliciano, and Snaith Henry J. , J Am Chem Soc, 2017 May 03, Volume 139, Issue 17, p.6030-6033, (2017)

Nanocube Superlattices of Cesium Lead Bromide Perovskites and Pressure-Induced Phase Transformations at Atomic and Mesoscale Levels., Nagaoka, Yasutaka, Hills-Kimball Katie, Tan Rui, Li Ruipeng, Wang Zhongwu, and Chen Ou , Adv Mater, 2017 May, Volume 29, Issue 18, (2017)

Atomically thin cesium lead bromide perovskite quantum wires with high luminescence., Huang, Hongwen, Liu Mei, Li Jing, Luo Laihao, Zhao Jiangtao, Luo Zhenlin, Wang Xiaoping, Ye Zhizhen, He Haiping, and Zeng Jie , Nanoscale, 2017 Jan 07, Volume 9, Issue 1, p.104-108, (2017)

Ligand Mediated Transformation of Cesium Lead Bromide Perovskite Nanocrystals to Lead Depleted Cs4PbBr6 Nanocrystals., Liu, Zeke, Bekenstein Yehonadav, Ye Xingchen, Nguyen Son C., Swabeck Joseph, Zhang Dandan, Lee Shuit-Tong, Yang Peidong, Ma Wanli, and A Alivisatos Paul , J Am Chem Soc, 2017 Apr 19, Volume 139, Issue 15, p.5309-5312, (2017)

Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals., De Roo, Jonathan, Ibáñez Maria, Geiregat Pieter, Nedelcu Georgian, Walravens Willem, Maes Jorick, Martins Jose C., Van Driessche Isabel, Kovalenko Maksym V., and Hens Zeger , ACS Nano, 2016 Feb 23, Volume 10, Issue 2, p.2071-81, (2016)

Cesium Enhances Long-Term Stability of Lead Bromide Perovskite-Based Solar Cells., Kulbak, Michael, Gupta Satyajit, Kedem Nir, Levine Igal, Bendikov Tatyana, Hodes Gary, and Cahen David , J Phys Chem Lett, 2015 Dec 23, (2015)

Vibrational spectroscopic and computational studies on diisopropylammonium bromide., Sahoo, Shradhanjali, Ravindran T R., Chandra Sharat, Sarguna R M., Das B K., Sairam T N., Sivasubramanian V, Thirmal C, and Murugavel P , Spectrochim Acta A Mol Biomol Spectrosc, 2017 Sep 05, Volume 184, p.211-219, (2017)

Sensitive immunosensing of squamous cell carcinoma antigen based on a nanocomposite of poly{3-amine-N-[3-(N-pyrrole)propyl]imidazole bromide} ionic liquid and gold nanoroots., Wu, Yingying, Zhao Yong, Wang Yanying, Ye Xiaoxue, Wu Tsunghsueh, Deng HongPing, Wu Peng, and Li Chunya , Biosens Bioelectron, 2017 Oct 15, Volume 96, p.140-145, (2017)

Enhanced pseudocapacitive performance of electroactive p-type conductive polymer in the presence of 1-octadecyl-3-methylimidazolium bromide., Ehsani, A, Kowsari E, M Najafi Dashti, Safari R, and H Shiri Mohammad , J Colloid Interface Sci, 2017 Oct 01, Volume 503, p.10-16, (2017)


June 23, 2017
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