National standard GB/T6890-2000 compliant. Main grade chemical composition: Grade | Main grade (not less than) | Impurities (not more than) | Total zinc | Metallic zinc | Pb | Fe | Cd | Acid-insoluble matter ---|---|---|---|---|---|---|---|--- Grade 1 | 98% | 96% | 0.10% | 0.05% | 0.10% | 0.20% Grade 2 | 98% | 94% | 0.20% | 0.20% | 0.20% | 0.20% Grade 3 | 96% | 92% | 0.30% | - | - | 0.20% Grade 4 | 92% | 88% | - | - | - | 0.20% Note: For Grade 4 zinc powder produced from zinc-containing materials, the sulfur content should not exceed 0.5%.
Zinc sulfate chemical provides high solubility stable composition and effective zinc supplementation widely used in agriculture fertilizers water treatment and industrial chemical production processes
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