Cesium chloride

Our cesium chloride, free-flowing and Redi-Dri™, boasts a purity of ≥99.999% on a trace metals basis. This highly water-soluble crystalline solid is known for its high refractive index and excellent dielectric properties. It is widely utilized in solid oxide fuel cells, lighting devices, solar cells, and nucleic acid separation. While partially soluble in ethanol and methanol. Furthermore, it features a wide band gap of approximately 8.35 eV at 80 K, making it an ideal material for a range of advanced applications. Choose our Cesium Chloride, free-flowing, Redi-Dri(TM), ≥99.999% trace metals basis for optimal results in your applications, leveraging the benefits of unmatched quality and reliability. Low impurities (<10ppm) in cesium chloride (CsCl) significantly enhance its performance by improving charge carrier mobility and optimizing optical properties, leading to higher efficiency in solar cells. In nucleic acid separation, low impurities increase selectivity and binding efficiency, resulting in more accurate isolation and higher yields. Additionally, reduced impurities contribute to greater stability and reliability, ensuring consistent performance and a longer lifespan in both applications.




We packaged Cesium chloride in our innovative Redi Dri(TM) packaging, which easily can prevent the absorption of moisture. The packaging has distinct features and advantages to protect the salts from moisture.

Our cesium chloride, free-flowing and Redi-Dri™, boasts a purity of ≥99.999% on a trace metals basis can be used as

- As crystal seeds to enhance the coverage of the CH3NH3PbI3−xClx absorber layer in perovskite solar cells. It helps to boost the power conversion efficiency of solar cells.


-As a medium to synthesize N and P-codoped carbon nanospheres for application in fuel cells and zinc-air batteries.


-To fabricate silicon nanopillars for solar cells, batteries, light-emitting diodes, etc.


-To enhance the thermal stability of polyoxometalates(used as electrode materials for lithium-ion batteries).


-To synthesize the lead-free halide double perovskite Cs2AgInCl6 with excellent moisture, light, and heat resistance. This material shows great potential for various optoelectronic applications, including photovoltaics.

Features & Benefits:


-Longer shelf-life as a free-flowing powder without addition of anti-caking agents

-Slower absorption of environmental moisture

-Faster dissolution compared to clumped materials

-No need to chip, chisel, or grind clumped salts.

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC