The cations in ferrous nitrate are as follows:
The cations in ferrous nitrate are ferrous ions, and their symbols are: fe^(2).
Iron nitrate
Iron nitrate is an inorganic substance with the chemical formula Fe(NO3)2, light green orthorhombic crystal system, and flaky crystals. Melting point 60.5℃. Easily soluble in water. The aqueous solution is heated to become basic ferric nitrate. It is wet and stable when cold. It is prepared by the reduction reaction of iron nitrate solution with silver. Iron filings can also be dissolved in dilute nitric acid with a density of less than 1.05g/cm3 at low temperature, and then crystallized by cooling. Produced by centrifugal separation. It can also be obtained by metathesis reaction of ferrous sulfate and barium nitrate. Used in the manufacture of ferric nitrate nonahydrate and other iron salts.
Preparation method
It is prepared by reducing iron nitrate solution and silver. It can also be obtained by dissolving iron filings in dilute nitric acid with a density of less than 1.05g/cm3 at low temperature, cooling and crystallizing, and centrifugal separation. It can also be obtained by metathesis reaction of ferrous sulfate and barium nitrate.
Patent: The waste acid obtained from the production of titanium dioxide by the sulfuric acid method is mixed with excess ferrous hydroxide to generate ferrous sulfate; the reaction liquid is filtered to obtain a filtrate mainly containing ferrous sulfate; to the filtrate mainly containing ferrous sulfate Add excess barium nitrate to the iron filtrate to react to generate ferrous nitrate and barium sulfate. Filter the reaction liquid to separate the ferrous nitrate and barium sulfate solutions;
The barium sulfate precipitate is washed, dried and pulverized to obtain Barium sulfate product; add a small amount of ferrous sulfate to the ferrous nitrate solution to neutralize the barium nitrate, and then send it to an alkaline pressure distiller for vacuum distillation into a ferrous nitrate supersaturated solution, which is then cooled, crystallized, and dried to obtain the ferrous nitrate product.