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Sigma-Aldrich

Cesium

ingot, ≥99.95% trace metals basis

Synonym(s):

Caesium

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About This Item

Empirical Formula (Hill Notation):
Cs
CAS Number:
Molecular Weight:
132.91
EC Number:
MDL number:
UNSPSC Code:
12141801
PubChem Substance ID:
NACRES:
NA.23

vapor pressure

1 mmHg ( 279 °C)

Quality Level

Assay

≥99.95% trace metals basis

form

ingot

reaction suitability

reagent type: reductant

packaging

pkg of Packaged in: Breakseal Ampule

resistivity

19 μΩ-cm, 0°C

bp

705 °C (lit.)

mp

28.5 °C (lit.)

density

1.873 g/mL at 25 °C (lit.)

SMILES string

[Cs]

InChI

1S/Cs

InChI key

TVFDJXOCXUVLDH-UHFFFAOYSA-N

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General description

Cesium(Cs) is a highly reactive alkali metal known for its unique properties its uniqueproperties, such as a low melting point and high atomic mass, which enhance itsexceptional conductivity and reactivity. Its compounds, particularly cesiumlead halide perovskites, are extensively utilized in next-generation solarcells to achieve high efficiency and stability. Additionally, cesium isutilized in electron emission devices and photonic technologies.

Application

  • Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency: Demonstrates how adding cesium to perovskite solar cells improves their stability and efficiency, making a significant advancement in solar technology (M Saliba et al., 2016).
  • Exotic stable cesium polynitrides at high pressure: Explores the formation of new cesium polynitrides under high pressure, indicating potential applications in high-energy-density materials (F Peng et al., 2015).

Pictograms

FlameCorrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B - Water-react 1

Supplementary Hazards

Storage Class Code

4.3 - Hazardous materials which set free flammable gases upon contact with water

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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