It deliquesces in moist air.
Thorium chloride readily deliquesces on exposure and forms double salts with alkaline chlorides.
The solid must be at once bottled, because it attracts the moisture and carbonic acid of the air with great avidity and deliquesces.
It deliquesces in moist air, and is easily reduced to arsenic by heating with carbon.
Pure potassium is a silvery white metal tinged with blue; but on exposure to air it at once forms a film of oxide, and on prolonged exposure deliquesces into a solution of hydrate and carbonate.