|
Atomistry » Iron » Chemical Properties » Complex Iron Carbonates | ||
Atomistry » Iron » Chemical Properties » Complex Iron Carbonates » |
Complex Iron Carbonates
Complex ammonium iron carbonates have been prepared in solution by adding excess of ammonium carbonate to ferrous or ferric salts in aqueous solutions. Ferric ammonium carbonate solution is blood-red in colour, and stable when kept in a closed vessel, but deposits ferric hydroxide on evaporation. Ferrous ammonium carbonate yields a colourless solution, which, upon oxidation in a limited supply of air, yields doubly refracting green prisms. of basic ferroso-ferric ammonium carbonate, NH4.CO3.Fe.CO3.Fe.CO3.FeO.2H2O. This, when treated with alkali hydroxides, yields magnetic ferroso-ferric oxide.
A basic carbonate is obtained by grinding crystals of ferric chloride with a slight excess of crystallised sodium carbonate until no more carbon dioxide is evolved. The now liquid mixture is mixed with water, and the precipitate allowed to settle, and dried. The proportion of carbon dioxide present is liable to vary, as washing the precipitate induces hydrolysis. A substance of composition approximating to 7Fe2O3.CO2.8H2O has been obtained. |
Last articlesCa in 2LP3Ca in 2LQP Ca in 2LQC Ca in 2LP2 Ca in 2LMV Ca in 2LMU Ca in 2LMT Ca in 2LM5 Ca in 2LLQ Ca in 2LHI |
© Copyright 2008-2020 by atomistry.com | ||
Home | Site Map | Copyright | Contact us | Privacy |