| Item | Index |
| Appearance | White powder |
| Surface Area M2/g ≥ | 30±5 |
| Lead oxide(Pb)%≤ | 0.37 |
| The manganese oxide is in terms of Mn%≤ | 0.0001 |
| Copper oxide in terms of Cu%≤ | 0.0002 |
| insoluble matter%≤ | 0.006 |
| Burning reduction%≤ | 0.2 |
| Screen residue (45um)%≤ | 0.10 |
| Water-soluble%≤ | 0.10 |