Zinc Sulfate Heptahydrate (CAS 7446-20-0) Ultimate Guide
Table of Contents
1. Product Specifications & Comparison
| Parameter | Zinc Sulfate Heptahydrate | Zinc Sulfate Monohydrate | Anhydrous Zinc Sulfate |
|---|---|---|---|
| CAS Number | 7446-20-0 | 7446-19-7 | 7733-02-0 |
| Molecular Formula | ZnSO₄·7H₂O | ZnSO₄·H₂O | ZnSO₄ |
| Zinc Content | 22.7-23.2% | 35-36% | 39-40.5% |
| Solubility (Water) | 96.5 g/100ml (20°C) | 35.1 g/100ml | 41.6 g/100ml |
2. Industrial Applications
2.1 Agricultural Use
• Corrects zinc deficiency in crops (rice, corn, citrus)
• Foliar spray concentration: 0.05-0.1% solution
• Soil application rate: 10-25 kg/hectare
2.2 Pharmaceutical Grade
• Oral rehydration solutions (WHO Formula)
• Dermatological preparations (3-5% concentration)
• Veterinary supplements (0.5-2% in feed)
3. Usage Guidelines
| Application | Dosage | Safety Precautions |
|---|---|---|
| Fertilizer Production | Mix 15-20% with NPK base | Wear NIOSH-approved respirator |
| Animal Feed Additive | 100-300 mg/kg feed | Store separately from vitamins |
4. Agricultural Case Study: GreenGrow Agritech
Problem: 40% yield reduction in rice crops
Solution: Applied 15kg/hectare pre-flooding
Result: 28% yield increase in next harvest cycle
5. Pharmaceutical Case Study: MediHealth Solutions
Challenge: Needed WHO-compliant electrolyte formula
Implementation: Used USP-grade ZnSO₄·7H₂O
Outcome: Achieved 99.8% dissolution rate in final product
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