... in Powder 1,P2O5:18.0% 2,CaO:30.0% 3,Moisture:1.0% 4,Solubility:90% soulble 18% FMP (Fused Magnesium ... : P2O5 18.0% min, 20.0% min 5, SiO2: 27.0% + - 6, CaO: 30.0% + - 7, MgO: 12.0% + - 8, Alkari: 40.0% min ... 9, Moisture: 1.0% max 10, ... S Korea, Malaysia, B'Desh, Japan and Australia. 18% FMP (Fused Magnesium Phosphate) in Powder