| M | 98 |
|---|---|
| D | 1.7 |
| b.p | 158°C |
| m.p | 21°C |

| Clear odorless slightly viscous liquid | Complying |
| Assay (T) | >= 84.0%w/w |
| P2O5 | 60.8-62.4% |
| Freezing point | 18-21°C |
| Density (25°C) | 1.675-1.695g/ml |
| Iron (Fe) | <= 5.0ppm |
| Copper (Cu) | <= 0.7ppm |
| Calcium (Ca) | <= 10.0ppm |
| Cadmium (Cd) | <= 0.2ppm |
| Nickel (Ni) | <= 0.5ppm |
| Arsenic (As) | <= 0.75ppm |
| Chromium (Cr) | <= 1.0ppm |
| Vanadium (V) | <= 1.0ppm |
| Mercury (Hg) | <= 0.1ppm |
| Lead (Pb) | <= 0.3ppm |
| Fluoride (F) | <= 10ppm |
| Sulfate (SO4) | <= 150ppm |
| Volatile acids (as Acetic acid) | <= 10ppm |
| Nitrate (NO3) | <= 5ppm |
| Chloride (Cl) | <= 7ppm |
| Heavy metals (as Pb) | <= 5ppm |