Item | Unit | Specification |
Assay( as Na4P2O7) | % | 96.5-100.5 |
P2O5 | % | 52.5-54.0 |
Flouride | ppm | 10 max |
As | ppm | 3 max |
Water insoluble matter | % | 0.2 |
Heavy metal(as Pb) | ppm | 10 max |
PH(1%) | 9.8-10.8 | |
Lead | ppm | 4 max |
Bulk density | g/l | 500-750 |
Mercury(Hg) | ppm | 1 max |
Cadmium(Cd) | ppm | 1 max |
Loss on ignition | % | 0.5 max |