Cesium
ALDRICH/239240 - ingot, ≥99.95% trace metals basis
Synonym: Caesium
CAS Number: 7440-46-2
Empirical Formula (Hill Notation): Cs
Molecular Weight: 132.91
EC Number: 231-155-4
MDL Number: MFCD00134037
Linear Formula: Cs
Product Type: Chemical
| assay | ≥99.95% trace metals basis |
| bp | 705 °C (lit.) |
| density | 1.873 g/mL at 25 °C (lit.) |
| form | ingot |
| InChI | 1S/Cs |
| InChI key | TVFDJXOCXUVLDH-UHFFFAOYSA |
| mp | 28.5 °C (lit.) |
| packaging | pkg of Packaged in: Breakseal Ampule |
| Quality Level | 100 ![]() |
| reaction suitability | reagent type: reductant |
| resistivity | 19 μΩ-cm, 0°C |
| SMILES string | [Cs] |
| vapor pressure | 1 mmHg ( 279 °C) |
| Application: |
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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. |
| Packaging: | 1, 5 g in ampule |
| Symbol | ![]() GHS02,GHS05 |
| Signal word | Danger |
| Hazard statements | H260 - H314 |
| Precautionary statements | P223 - P231 + P232 - P280 - P305 + P351 + P338 - P370 + P378 - P422 |
| Hazard Codes | F,C |
| Risk Statements | 11-14/15-34 |
| Safety Statements | 8-16-26-36/37/39-43-45 |
| RIDADR | UN 1407 4.3 / PGI |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH014 |
| Purity | ≥99.95% trace metals basis |
| bp | 705 °C (lit.) |
| mp | 28.5 °C (lit.) |
| Density | 1.873 g/mL at 25 °C (lit.) |
| UNSPSC | 12141801 |



