Strontium Thiocyanate, Sr(CNS)₂.3H₂O

Strontium Thiocyanate, Sr(CNS)₂.3H₂O, may be prepared by boiling a solution of ammonium thiocyanate with strontium hydroxide until no more ammonia is given off, passing carbon dioxide through the liquid to remove excess of hydroxide, filtering, and evaporating. It is also formed by the action of thiocyanic acid on strontium carbonate. It is a very deliquescent salt, easily soluble in water and alcohol.

A double salt is known, 2Hg(CN)₂.Sr(SCN)₂.4H₂O, which loses 2 molecules of water on exposure to the air.