Césio

320056126798

7440-46-2

caesium | cesium: 99.9% | cesium (99.5%) | cesium, 99.95+% | cesium | cesium in vials | cesium-133 | cesium metal | cesium standard | cesiumcompounds

Cs

132.90

1.873 g/mL at 25 °C(lit.)

705 °C(lit.)

28.5 °C(lit.)

reacts Stability Flammable solid; highly flammable in powder form. Moisture-sensitive. Incompatible withchlorine, phosphorus, water.Toxicology Harmful if swallowed or inhaled and in contact with skin.

silvery, light ductile metal

Moderately toxic by intraperitoneal route. Cesium is quite similar to potassium in its elemental state. It has been shown, however, to have pronounced physiological action in experimentation with animals. Hyper-irritability, including marked spasms, has been shown to follow the administration of cesium in amounts equal to the potassium content of the diet. It has been found that replacing the potassium in the diet of rats with cesium caused death after 10–17 days. Ignites spontaneously in air. Violent reaction with water, moisture, or steam releases hydrogen gas which explodes. Violent reaction with acids, halogens, and other oxidizing materials. Incandescent reaction with nonmetals (e.g., sulfur, phosphorus). See also SODIUM.

4.3

Símbolos de perigo:

Europa estándar Pictogramas de peligro, código y definición

36/38-34-14/15-11 (R)

3

UN 3264 8 / PG 3

FK9225000

2-8°C