239240

Cesium

ingot, ≥99.95% trace metals basis

• Synonym(s): Caesium
• Empirical Formula (Hill Notation): Cs
• CAS Number: 7440-46-2
• Molecular Weight: 132.91
• NACRES: NA.23
• PubChem Substance ID: 24854363
• UNSPSC Code: 12141801
• EC Number: 231-155-4
• MDL number: MFCD00134037

Properties

• vapor pressure: 1 mmHg ( 279 °C)
• Quality Segment: 100
• assay: ≥99.95% trace metals basis
• form: ingot
• reaction suitability: core: Cesium, 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

Description

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).

Safety Information

• pictograms: GHS02,GHS05
• signalword: Danger
• hcodes: H260,H314
• pcodes: P223 - P231 + P232 - P280 - P305 + P351 + P338 - P370 + P378 - P422
• supp_hazards: EUH014
• Storage Class: 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
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
• Hazard Classifications: Skin Corr. 1B - Water-react. 1