
| Indexes | Industrial Grade | Food Grade |
| Na5P3O10 | 94.0% Min | 94.0% Min |
| P2O5 | 57.0% Min | 57.0% Min |
| Water Insoluble Matter | 0.15% Max | 0.04% Max |
| Iron (Fe) | 0.015% Max | 0.006% Max |
| PH value (1% water solution) | 9.2-10.0 | 9.5-10.0 |
| Heavy Metal (as Pb) | 0.001% Max | - |
| Arsenic (As) | 0.0003% Max | - |
| Fluoride (F) | 0.003% Max | - |
| Whiteness | 92% Min | 92%Min |
| Ignition loss | 1.0 | - |
| Density (g/cm3) | 0.35-0.9 | 0.35-0.9 |
| Phase I | 10-30 | 10-30 |