Barium Perborate, Ba(VO₃)₂.7H₂O

Barium Perborate, Ba(BO₃)₂.7H₂O, is formed as a white flocculent precipitate by the action of sodium perborate on barium chloride at 0° C. It decomposes hydrochloric acid with the evolution of chlorine, and reacts with sulphuric acid producing barium sulphate and hydrogen peroxide.

By the action of boric acid on hydrated barium peroxide a compound, BaB₂O₅.3H₂O, is obtained.