magnesium sulfate and ammonium phosphate are not compatible but companies made dry powder fertilizers that have both of them .I want to make a fertilizer solution that have this two chemicals in one solution to save time of multiple application of separated magnesium sulfate and ammonium phosphate
Dear Md.Sadegh Bagheri
If you add both of these compounds to water in order to make a solution , a reaction occurs
2(NH4)3PO4(aq) + 3MgSO4(aq) → Mg3(PO4)2 (s) + 3NH4)2SO4(aq)
This produces an insoluble precipitate of magnesium phosphate.
Unfortunately this will prevent you from using the idea of a single solution.
During the precipitation process of ammonium and phosphate ions with magnesium sulfate usually results the magnesium ammonium phosphate (MAP). MAP is a white inorganic crystalline compound which can be used as fertilizer. The crystallization process depends on multiple parameters such as: concentrations of phosphate, ammonium and magnesium, pH value, ionic strength of solutions.The available nutrients are constant you can use this solotion.
MAP appears as crystal-hydrates MgNH4PO4⋅nH2O (where n = 1, 3, 6, 7). In analytical and technological practice prevails magnesium ammonium phosphate crystallized with one and six moles of water, respectively. MAP is a concentrated complex fertilizer, which contains three nutritive elements: phosphorus, nitrogen and magnesium. MAP can be used as fertilizer as it is, or it can be used to obtain mixed fertilizers. MAP is among the few fertilizers which contain nitrogen under a water insoluble, slowly assimilable form. The efficiency of MAP components in soil is higher than the efficiency of the same components, but bound in other combinations. MAP can be also used as fireproof material in fire extinguisher foam, as ceramic pigment and for metal phosphating.
Regards,
Prem Baboo
Adding both in a single solution is not advised usually. Coz they ll react
I think they will react, as answered by Dr. Prem Baboo. One more question from my side.
What would be the reaction product of ammonia (NH3 pr NH4-) and dimagnesium phosphate (MgHPO4) in water? Will they react to form MAP?
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