Specifications: AssayNa5P3O10 %≥ 94.0 P2O5 %,57.0 Sodium Pyrophosphate %≤ 3 Sodium Sulphate ≤2.0 Water Insoluble Matter %≤0.1 Iron(Fe) %≤0.01 PH value(1%water solution), 9.2-10.0 Particle Size Power: (ASTM)Through 200 mesh sieve %≥ 75 Through 100 mesh sieve %≥ 90 Whiteness %≥100.0 Density, 0.7-1.000 kg/lt Phase I ,10-30Packing and storage: In 25Kg, 50Kg, 1000Kg netbag. Store at a cool, dry and well ventileated place.