Zinc Sulfate Monohydrate CAS 7446-19-7 White Powder Fertilizer Grade Zinc Source
Product Introduction
Zinc Sulfate Monohydrate (CAS 7446-19-7) is a white, free-flowing crystalline powder and one of the most economical and effective sources of zinc for agriculture and animal nutrition. With its high zinc content and excellent solubility, it is widely used in foliar fertilisers, compound fertilisers, feed premixes and water treatment. Our product offers consistent zinc content, low heavy metal residues and uniform granulation for easy blending.
Physical and Chemical Specification
| Product Name | Zinc Sulfate Monohydrate |
| CAS No. | 7446-19-7 |
| Molecular Formula | ZnSO4.H2O |
| Molecular Weight | 179.45 g/mol |
| Appearance | White powder or granules |
| Zinc (Zn) Content | >= 35.0% |
| Assay (ZnSO4.H2O) | >= 98.0% |
| Water Insoluble Matter | <= 0.05% |
| pH (5% solution) | 4.0 - 6.0 |
| Heavy Metals (as Pb) | <= 10 ppm |
| Packing | 25 kg PP woven bag with PE liner / 1000 kg jumbo bag |
Product Functions
- Corrects zinc deficiency in crops and improves yield and quality
- Supports enzyme activity, immunity and growth in livestock and poultry
- Acts as a zinc source in chelate and premix production
- Functions as an electrolyte and additive in industrial processes
- Helps control moss and algae in cooling water systems
Application Areas
- Foliar and compound fertiliser production
- Animal feed and mineral premix
- Water treatment and industrial processing
- Agrochemical and micronutrient blends
Manufacturing Process
Zinc oxide or high-grade zinc ash is reacted with sulphuric acid to produce zinc sulfate solution. The solution is purified to remove iron and heavy metals, then concentrated and crystallised under controlled evaporation. The monohydrate crystals are dried, screened and packed to give a stable, uniform powder with consistent zinc content.
Why Choose Us
- High and consistent zinc content with low heavy metal residue
- Free-flowing powder suitable for dry blending
- Batch COA and third-party testing available
- Flexible packaging and reliable international delivery
FAQ
Q: What is the difference between the monohydrate and heptahydrate?
A: The monohydrate contains about 35% zinc versus about 22% in the heptahydrate, making the monohydrate more economical for dry products and transport.
Q: Is the product suitable for fertiliser blending?
A: Yes, the free-flowing powder and low moisture make it ideal for compound and bulk blending fertilisers.
Q: Can you supply feed grade?
A: Yes, feed grade and technical grade are available. Please confirm your application for the correct specification.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.