 
								
| No | Item | Standard Specification | ||
| 1 | Sulfur (Sulphur)≥ | 5N | 6N | |
| 99.999% | 99.9999% | |||
| 2 | ImpurityPPMwt Max each | Al | 0.5 | 0.10 | 
| Cu | 0.2 | 0.05 | ||
| Fe | 0.5 | 0.10 | ||
| Ni | 0.5 | 0.10 | ||
| Zn | 0.5 | 0.10 | ||
| As | 0.5 | 0.20 | ||
| Co | 0.5 | 0.05 | ||
| Mn | 0.5 | 0.05 | ||
| Pb | 0.5 | 0.05 | ||
| Sn | 0.5 | 0.10 | ||
| Cd | - | 0.05 | ||
| Se | 1.0 | - | ||
| Si | 1.5 | 0.10 | ||
| Total | ≤10ppm | ≤1ppm | ||
| 3 | Size | -60mesh powder, D2-7mm tablet, 0.5-5.0 or ≤25mm lump | ||
| 4 | Packing | 1kgs in polyethylene bottle with composite bag outside | ||