Sodium Dimolybdate, Na₂Mo₂O₇

Sodium Dimolybdate, Na₂Mo₂O₇, is formed when suitable quantities of sodium carbonate or nitrate and molybdenum trioxide are fused together, and the mass washed free of carbonate or nitrate by cold water.5 The small crystals so obtained are only slightly soluble in either cold or hot water. From such a solution in hot water, prisms of the monohydrate, Na₂Mo₂O₇.H₂O, are deposited.