Cesium chemicals are highly reactive alkali metals with the largest atomic radius. Excluding francium, cesium has the lowest boiling and melting points, the highest vapor pressure, the highest density and the lowest ionization potential of the alkali metals.

Cabot supplies cesium chemicals in the form of cesium carbonate, cesium chloride, cesium fluoride, cesium formate, cesium hydroxide, cesium nitrate, and cesium sulfate. Having the largest proven reserves of pollucite at its Bernic Lake mine in Manitoba, Canada, Cabot is well positioned to supply customers with cesium products for decades to come.