ISO 9001:2015
| Product Name: | Zinc sulfate heptahydrate | Catalogue Number: | GR-62640-1 |
| Batch Size: | 1000KG | Lot Number: | 20250610 |
| CAS Number: | 7446-20-0 | Production Date: | |
| Molecular Formula: | H14O11SZn | Report Date: | 2025-06-08 |
| Molecular Weight: | 287.6 | Expiry Date: | |
| Storage: | Room temperature, Protected from light and Sealed |
| Test Items | Specifieation | Results |
| Appearance | White solid | Conforms |
| Assay | ≥97.0% | 97.8% |
| Zn | ≥22.0% | 22.1% |
| Pb | ≤10 ppm | 7 ppm |
| Fe | ≤100 ppm | 5 ppm |
| Cd | ≤10 ppm | 8 ppm |
| As | ≤5 ppm | 3 ppm |
| Chlorides | ≤2.0% | 1.10% |
| Water insolubles | ≤0.05% | 0.04% |
| Moisture | ≤2.0% | 0.8% |
| pH | 6~7 | Conforms |
| Hg | ≤2 ppm | 1 ppm |
| Cr | ≤5 ppm | 1 ppm |
| signature | ||
Prepared by: |
Reviewed by: |
Aproved by General manager: |
| Date: | Date: | Date: |
