Physical Properties Colour : Snow white free flowing powder, free from lumps, grits and other visible impurities. Solubility : Freely soluble in water. Sieving Test : Retain 85 mesh 0.5 - 1.5 %. Taylor Method Pass 85 100 1.0 - 2.0 % 100 120 4.0 - 6.0 % 120 200 10.0 - 15.0 % 200 Nil 60.0 - 85.0 % Bulk Density 1.0 gmcc Chemical Properties Sodium Sulphate 98 % Sodium Carbonate 0.5 % Sodium Chloride 0.5 % Water Insoluble 0.1 % Calcium & Magnesium 0.2 % Moisture Content 105c 0.3 % Iron 50 ppm max PH % Solution 6.8-7.5