Barium Trimolybdate, BaMo₃O₁₀.3H₂O

Barium Trimolybdate, BaMo₃O₁₀.3H₂O, is obtained by the addition of aqueous barium chloride to a solution of an alkali trimolybdate as a white flocculent precipitate which, on drying, becomes horny. The hydrate is slightly soluble in water. On heating to redness it melts, and the liquid on cooling sets to a yellow crystalline mass.