Tri-Sodium Phosphate(TSP) Chemical formula: Na3HPO4. NH2O (n=0, 12) Molecular weight: 380.14 Properties: White or colorless crystals, efflorescent in air, easily soluble in water but not in organic solution. Its water solution is alkaline. pH value of 1% solution is 12.1, relative density at 1.62g/cm3, melting point is 73.4 Packing and storage: In 25kg, 50kg, 1000kg net bags Guaranteed Technical Specifications: Na3PO4 Industrial grade and Food grade Na3PO4.12H2O Industrial grade and Food grade