4028 Cesium Cesium (Caesium) is a soft, silvery-gold alkali metal with a melting point of 28°C (82°F). Cesium is used in various industries, from the oil industry as cesium formate in drilling fluid, atomic clocks, centrifugation fluids, and cesium vapor thermionic generators, which convert heat energy to electrical energy. 7440-46-2 5354618 Cs 132.905452 White powder. 28.44°C No indication of carcinogenicity to humans (not listed by IARC). Cesium is used in various industries, from the oil industry as cesium formate in drilling fluid, atomic clocks, centrifugation fluids, and cesium vapor thermionic generators, which convert heat energy to electrical energy. 2014-08-29T04:48:24Z 2026-05-14T19:50:49Z Cesium 30514 DB15392 true [Cs] Cs InChI=1S/Cs TVFDJXOCXUVLDH-UHFFFAOYSA-N 132.9055 132.90544687 Exogenous Solid 0 HMDB13669 4510778 CHEM002934 DTXSID5036767 NS00076331 caesium 0 0 1.7784 0 0 0 0 0