Ammonium molybdate tetrahydrate is chemical compound with formula (NH₄)₆Mo₇O₂₄.4H₂O .It is White, crystalline powder. Soluble in water; insoluble in alcohol. Nonflammable.
Ammonium molybdate tetrahydrate appearing as a colorless solid. It can be manufactured through dissolving the molybdenum trioxide in excess amount of aqueous ammonia and evaporating the solution at the room temperature.