Ammophos Fertilizer Monoammonium Phosphate Factory Direct Supply Free Samples Large Quantity And Favorable Price Monoammonium Phosphateï¼? Monoammonium Phosphate is completely water soluble, generally applied in the granular form and used in the formulation of suspension fertilizers. As a granular material, it mixes well and frequently serves as an ingredient in bulk-blended fertilizers. Monoammonium Phosphate, with its low pH levels, is best used for high-alkaline soils. It is an ideal starter fertilizer because MAP contains less ammonia-nitrogen than DAP, reducing potential seed damage. Monoammonium PhosphateCharacteristics:white crystal; relative density at 1.803g/cm3, melting point at 190oC, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH Value of 1% solution is4.5. Molecular Formula: NH4H2PO4 Molecular Weight:115.0 Cas No.: 7722-76-1