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Sodium Chromous Carbonate, Na2CO3.CrCO3

Sodium Chromous Carbonate, Na2CO3.CrCO3.10H2O, separates as a reddish-brown powder when moist chromous acetate is mixed with a solution of sodium carbonate in an atmosphere of carbon dioxide. It yields microscopic, tabular, lozenge-shaped crystals. If heated at 100° C. in a current of a dry inert gas, the monohydrate, Na2CO3.CrCO3.H2O, is obtained.

A red-brown magnesium compound has also been obtained. The carbonates of the alkaline earth metals have no action on chromous acetate.

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