Calcium hexacyanoferrate (III) is an inorganic compound, a complex salt of calcium and hexacyanoferric (III) acid with the formula Ca 3 [Fe (CN) 6 ] 2 , dissolves in water, forms crystalline hydrate - red crystals.
| Hexacyanoferrate | |
|---|---|
| Are common | |
| Systematic name | Calcium hexacyanoferrate (III) |
| Traditional names | Calcium iron synergy, calcium ferricyanide, calcium hexacyanoferriate |
| Chem. formula | Ca 3 [Fe (CN) 6 ] 2 |
| Physical properties | |
| condition | hydrate - red crystals |
| Molar mass | 544.13 g / mol |
| Chemical properties | |
| Solubility in water | dissolves |
Content
Getting
- Neutralization of hexacyanogen (III) acid with calcium carbonate :
- Mixing a solution of calcium hexacyanoferrate (II) with a small excess of manganese hexacyanoferrate (III) and after filtering the precipitate, evaporate the resulting solution under vacuum [1] .
Physical Properties
Calcium hexacyanoferrate (III) forms a crystalline hydrate of the composition Ca 3 [Fe (CN) 6 ] 2 • 12H 2 O - red needle crystals, it dissolves well in water [2] [1]
Chemical Properties
The compound is stable in dry air when heated to 100 ° C and in a cold aqueous solution, however, when boiled in an aqueous solution it decomposes with the release of hydrocyanic acid , calcium hydroxide and precipitate of iron oxide (III) [1] :
Application
- A component of the epoxy polymerization catalyst [3] .
Notes
- ↑ 1 2 3 Williams HE The chemistry of cyanogen compounds and their manufacture and estimation . - London: J. & A. Churchill, 1915.
- ↑ Chemist's Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
- ↑ Double metal cyanide complex catalysts modified with group iia compounds, 1999