1.MKP 0-58-38 2.Foliar fertilizer and 100% soluble 3.High phosphate ... white crystal, Assay:98.0% min, P2O5: 58.0% min, K2O: 38.0% min,Cl:0.01% max, PO4:0.2% max, Moisture:0.1% max ,Fe ... (mg/kg):50 max,Insoluble matter :0 ... .3% max, pH :4.0-5.0 Molecular Formula:KH2PO3, Molecular Weight:120.07, ...