Basic Info. Infection on Soil Physiological Acid Chemical Character Chemical Acid Release Type Quick Production Method Wet process Phosphate Fertilizer Solubility Water Solubility Source Chemical Phosphate Fertilizer Type Ssp Place of Origin South Africa Purity P2o5%: 18%Min Brand Name Topfert Model Number TF-Ssp18 Color White Molar Mass 234.05 G/Mol Density 2.220 g/cm3 Solubility in Water 2 G/100 Ml Refractive Index 1.5176 Crystal Structure Triclinic Transport Package Standard Marine Waterproof Packaging Specification 50kg per bag or customized Trademark zhongsheng Origin South Africa HS Code 3103190000 Production Capacity 5000000 Ton Per Month Valid P2O5 16.0% min ; 18% min Free Phosphoric acid:4.50 pct max 4.50% max Calcium 19-25% Sulphur 8.2% Free Acid 1.4% Fe2O3 0.98% A12O3 1.18% R2O3 2.2% Fluorine 1.13% Cd(Mg/Kg) 2.64 Pb(Mg/Kg) 75.48 Hg(Mg/Kg) 3.12 PH 3.0 In Powder 80 mesh, 90% min In granule 1-4.75mm, 90% min Moisture 3.0% max Pack in 50kg bag with inner poly bag