58 Gaoyang Avenue, Gufu Town, Xingshan County
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| 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 |