Cadmium sodium amalgam

Reduction of add solutions of vanadium pentoxide to the tetravalent state also takes place with bismuth amalgam 5 magnesium gives the trivalent salts of vanadium, while by using zinc, zinc coated with cadmium, electrolytically deposited cadmium, or sodium amalgam in the absence of air, divalent vanadium salts are obtained in solution.7 Vanadous salts and hypovanadous salts are, however, much more conveniently prepared by electrolytic reduction of acid solutions of vanadium pentoxide in an atmosphere of carbon dioxide.8... 

Attempts to employ other metals, such as copper in pyridine,120121 cadmium in acetonitrile,122 or sodium amalgam,123 have also been undertaken magnesium in tetrahydrofuran(vfY/e.sw/wyr) remains the substitute of choice after zinc. 

Sodium amalgam, 183, 326 Sodium-Ammonia, 355-356 Sodium benzeneselenoate, 356 Sodium bis(2-methoxyethoxy)aluminum hydride, 357,448 Sodium borohydride, 357-359 Sodium borohydride-Cadmium chloride, 359... 

The free radical NH4 has been isolated only in the form of its amalgam (Davy, 1811) which precipitates the more noble metals, such as copper, cadmium, and zinc, from their solutions. Solutions of ammonium in liquid ammonia are blue and usually exhibit properties similar to liquid ammonia solutions of sodium and potassium. 

---