It deliquesces in the air and melts readily on heating.
It is a dark-coloured crystalline solid which melts at 194° C. and boils at 268° C. It fumes in moist air and deliquesces gradually.
It deliquesces in moist air.
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.
Heated in a closed tube at 180° C. it loses chlorine and leaves a black residue of trichromyl chloride, Cr 3 0 6 C1 2, which deliquesces on exposure to air.
It deliquesces and oxidizes on exposure, inflames in dry chlorine and is reduced to ammonia by zinc dust.
It forms a white silky mass which volatilizes at about 400° C. It deliquesces in moist air, and is decomposed violently by water.
The dry salt is very hygroscopic; it deliquesces into an oily solution ("oleum tartari") in ordinary air.
It is a colourless crystalline solid, readily soluble in water and alcohol; it deliquesces on exposure to air.
Thorium chloride readily deliquesces on exposure and forms double salts with alkaline chlorides.
It deliquesces in moist air, and is easily reduced to arsenic by heating with carbon.