Barium Cyanurate, Ba[H₂(CNO)₃]₂

An acid salt, Barium Cyanurate, Ba[H₂(CNO)₃]₂.2H₂O, may be prepared by the action of a hot solution of cyanuric acid on barium hydroxide. It is only completely dehydrated at 280° C. A salt with a neutral reaction, of composition Ba₂[H(CNO)₃]₂.3H₂O, is also obtained as a crystalline precipitate by the addition of cyanuric acid to an ammoniacal solution of barium chloride. It only begins to lose water at 200° C., and at higher temperatures it evolves ammonia and cyanic acid, leaving neutral barium cyanate.