Barium Metapervanadate, Ba(VO₄)₂

Barium Metapervanadate, Ba(VO₄)₂, is obtained as a heavy, amorphous, yellow precipitate by the action of a saturated solution of ammonium metapervanadate in 30-33 per cent, hydrogen peroxide, free from sulphuric acid, on barium chloride solution. After washing with hydrogen peroxide it is dried over calcium chloride.