| 摘要 |
The invention relates to the synthesis of new chemical compounds, namely to magnesium-zinc diphosphates octahydrates of general formula MgZnPO·8HO (0<у≤0.17) which can be used in agriculture as magnesium-containing phosphorous fertilizer with microelement of prolonged action and to the process for their preparation. The process for the preparation of magnesium-zinc diphosphates octahydrates comprises the supply to the reaction vessel at room temperature in a parallel way at continuous stirring of mixture of 0.1-0.4 mol/l of aqueous solutions of magnesium and zinc chlorides, besides atomic ratio of cations K=Mg/Zn=19.00-99.00 and aqueous solution of sodium diphosphate, taken in ratio of n=PO/&Sgr;Mg,Zn=0.05-0.5, the formed sediment is hold under the mother solution for 12-14 days regularly mixing, filtered, washed and dried at room temperature. |
