Barium Permolybdate, Ba(MoO4)2.2H2O, is precipitated in the form of yellow, microscopic, octahedral crystals by the action of ammonium permolybdate on barium chloride, or of hydrogen peroxide on barium dimolybdate at 80° C. No precipitate is obtained in the cold. When heated the crystals become white, and water and oxygen are given off leaving a residue of barium dimolybdate.
A complex compound with oxalic acid has been described. |