|
Atomistry » Cobalt » Compounds » Sodium Cobalti-cyanide | ||
Atomistry » Cobalt » Compounds » Sodium Cobalti-cyanide » |
Sodium Cobalti-cyanide, Na3Co(CN)6
Sodium Cobalti-cyanide, Na3Co(CN)6.4H2O, is obtained by neutralising the free acid with sodium carbonate, excess of either reagent being avoided. On concentration the salt crystallises in transparent, colourless needles which readily dissolve in water, but not in alcohol. At 100° C. the salt becomes anhydrous, at higher temperatures it melts and decomposes.
Bismuth, cadmium, cuprous, manganese, mercurous, and zinc cobalti-cyanides have likewise been isolated. The rare earth metals yield heavy, microcrystalline precipitates of cobalti-cyanides of general formula M2(CoC6N6)2.9H2O. They are but sparingly soluble in water. In dilute hydrochloric acid their solubilities vary somewhat, the yttrium salt being some three times as soluble as that of erbium, a fact that enables the two metals to be separated in this way. |
Last articlesZn in 8WB0Zn in 8WAX Zn in 8WAU Zn in 8WAZ Zn in 8WAY Zn in 8WAV Zn in 8WAW Zn in 8WAT Zn in 8W7M Zn in 8WD3 |
© Copyright 2008-2020 by atomistry.com | ||
Home | Site Map | Copyright | Contact us | Privacy |