| Testing Item | Standard | Result |
| Characters | White crystalline powder | White crystalline powder |
| Content (on dry basis) (%) | ≥ 99.5 | 99.71 |
| Sulphate (SO4) (%) | ≤ 0.04 | <0.04 |
| Heavy metals (pb) (%) | ≤ 0.001 | <0.001 |
| Arsenic (As) (%) | ≤ 0.0002 | <0.0002 |
| Oxidable matter (%) | passed | passed |
| Loss on drying (%) | ≤ 0.5 | 0.38 |
| Residue on ignition (%) | ≤ 0.1 | 0.06 |
| Melting point ( ºC ) | 200~206 | 205 |
| Note: Special requirements of particle size should be negotiated by both suppliers and customers | ||
Polifar group is established in beautiful and economically developed city Nanjing in 2013.