Trisodium Phosphate Chemical formula Na3PO4 ·12H2O Molecular weight 380.12 Properties White or colorless crystals,effloresscent in air,soluble in water,but non-soluble in organic solution; solution is alkaline,PH value of 1% solution at 12.1,relative density at 1.62,and melting point at 73.4. Application Used to soften water;in chemical industry for daily necessities;and in electroplating,as color hardener in dyeing,assistant in porcelain melting,and degreasing agent in tannery,etc. 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 %≥ 18.3 18.3 3 Pottasium-based alkalinity,as Na2O % 16.0∼19.0 16.0∼19.0 4 Water insoluble %≤ 0.1 0.005 5 Sulfate,as SO4 %≤ 0.8 0.5 6 Chloride, as Cl %≤ 0.5 0.3 7 Iron %≤ 0.01 8 Arsenic,as As %≤ 0.005