Monopotassium Phosphate Chemical formula KH2PO4 Molecular weight 136.09 Properties White in look or colorless crystals,easily soluble in water,PH value of 1% solution is at 4.5,relative density at 2.338,and melting point at 252.6. Application Used highly efficient compound fertilizer;used in pharmacy and foodstuff industry;and for manufacture of metaphosphate. Packing 25kg or 50kg net in plastic-woven sack with inner polythene film bag.Store in a ventilated,dry place. Technical specifications NO Specifications Industrial Grade Food Grade 1 Main content %≥ 98.0 99.0 2 Phosphorus pentoxide %≥ 51.2 51.2 3 potassium oxide %≥ 33.9 33.9 4 PH value of 1% solution 4.34.7 4.34.7 5 Moisture %≤ 0.2 0.2 6 Water insoluble %≤ 0.2 0.1 7 Heavy metal,as pb %≤ 0.0001 8 Arsenic,as As %≤ 0.0001 9 Frioride %≤ 0.01