Zinc Sulfate
High-Quality Zinc Sulfate for Industrial and Agricultural Applications
Zinc Sulfate is an essential compound with wide-ranging applications across multiple industries. Our premium-grade Zinc Sulfate meets the highest quality standards to ensure optimal performance in your specific applications.
Product Specifications
- Chemical Formula: ZnSO4·H2O (Monohydrate) / ZnSO4·7H2O (Heptahydrate)
- CAS Number: 7446-19-7 (Monohydrate) / 7446-20-0 (Heptahydrate)
- Appearance: White crystalline powder or granules
- Assay: ≥98% purity
- Zinc Content: 35-36% (Monohydrate), 22-23% (Heptahydrate)
- Solubility: Highly soluble in water
- pH Value: 4-5 (5% solution)
- Bulk Density: 1.2-1.4 g/cm³
Technical Parameters
| Parameter | Monohydrate | Heptahydrate |
|---|---|---|
| Molecular Weight | 179.47 g/mol | 287.56 g/mol |
| Melting Point | 680°C (decomposes) | 100°C (loses water) |
| Heavy Metals (as Pb) | ≤10 ppm | ≤10 ppm |
| Chloride (Cl) | ≤50 ppm | ≤50 ppm |
| Iron (Fe) | ≤20 ppm | ≤20 ppm |
| Moisture Content | ≤1% | ≤1% |
Zinc Sulfate Applications
Zinc Sulfate serves numerous purposes across different sectors:
- Agriculture: Essential zinc fertilizer for crop nutrition
- Animal Nutrition: Feed additive for livestock growth
- Pharmaceuticals: Dietary supplement and medicinal ingredient
- Industrial: Galvanizing processes, electrolyte production
- Water Treatment: Corrosion inhibitor and precipitant
- Textiles: Mordant in dyeing processes
Packaging Options
We offer Zinc Sulfate in various packaging solutions to meet your requirements:
- 25 kg multilayer paper bags
- 50 kg polypropylene bags
- 1000 kg super sacks
- Bulk containers (customized quantities available)
Zinc Sulfate FAQ
1. What is the shelf life of Zinc Sulfate?
When stored properly in a cool, dry place in its original packaging, Zinc Sulfate maintains its quality for 24 months from production date. The heptahydrate form may gradually lose water of crystallization under high temperatures or low humidity conditions, while the monohydrate form remains more stable. Always check for caking or discoloration before use if the product has been stored for extended periods.
2. How does Zinc Sulfate compare to other zinc sources?
Zinc Sulfate offers distinct advantages compared to other zinc compounds. It has higher solubility in water than zinc oxide, making it more bioavailable for plant and animal nutrition applications. Compared to zinc chelates, Zinc Sulfate is more cost-effective while still providing excellent zinc availability. In water treatment applications, Zinc Sulfate demonstrates superior performance as a corrosion inhibitor compared to many organic alternatives.
3. What safety precautions should be taken when handling Zinc Sulfate?
While Zinc Sulfate is generally considered safe when handled properly, we recommend wearing appropriate PPE including gloves, safety goggles, and dust masks when handling the powder form. Avoid creating dust clouds and ensure adequate ventilation in enclosed spaces. In case of eye contact, rinse immediately with plenty of water for at least 15 minutes. For accidental ingestion, drink plenty of water and seek medical advice. Store away from strong acids and alkaline materials.
Storage Recommendations
- Store in a cool, dry, well-ventilated area
- Keep containers tightly closed when not in use
- Protect from moisture and direct sunlight
- Store away from incompatible materials (strong acids, alkalies)
- Maintain storage temperatures below 30°C for optimal stability
Quality Assurance
Our Zinc Sulfate undergoes rigorous quality control procedures:
- Batch-to-batch consistency testing
- Third-party laboratory verification
- Heavy metal content analysis
- Solubility and purity verification
- Particle size distribution testing
Additional Zinc Sulfate FAQ
4. What is the difference between Zinc Sulfate monohydrate and heptahydrate?
The primary differences lie in their water content and concentration. Zinc Sulfate monohydrate (ZnSO4·H2O) contains one water molecule and has a higher zinc content (35-36%) compared to the heptahydrate form (ZnSO4·7H2O) which contains seven water molecules and has 22-23% zinc content. The monohydrate is more concentrated and stable, preferred for applications where water content matters, while the heptahydrate is often used when solubility is paramount.
5. How should Zinc Sulfate be applied in agricultural use?
For agricultural applications, Zinc Sulfate can be applied through various methods: broadcast application at 5-20 kg per hectare, band placement near seeds at lower rates, foliar spraying at 0.1-0.5% concentration, or through fertigation systems. Soil application should be done before planting, while foliar applications work best during active growth stages. Always conduct soil tests to determine the appropriate application rate for your specific crops and soil conditions.
6. Is Zinc Sulfate approved for organic farming?
Zinc Sulfate is approved for use in organic farming by most certification bodies when used as a micronutrient supplement to correct zinc deficiencies. However, organic standards may vary by country and certifying organization, so always verify with your local organic certification agency before use. The product must be free from prohibited synthetic additives to qualify for organic use.
Regulatory Compliance
Our Zinc Sulfate meets or exceeds the following standards:
- FCC (Food Chemicals Codex) for food grade applications
- USP (United States Pharmacopeia) for pharmaceutical use
- ISO 9001:2015 quality management certified production
- REACH compliant for European markets
- Meets FDA requirements for food contact applications