Free Flowing Zinc Sulphate (Coarse Powder Monohydrate, 33% & 35.5%)
Coarse powder zinc sulphate monohydrate, supplied as and known in the trade as free flowing zinc sulphate, is the coarser milled form of ZnSO4.H2O containing 33% or 35.5% zinc. It is free flowing and less dusty than fine powder, so it meters cleanly and stores without lumping, while still dissolving readily.
The coarse powder grade is the same product buyers search for as free flowing zinc sulphate: free flowing and low-caking for clean handling and storage, yet still readily soluble. It suits buyers who want easy metering and storage without moving to a granulated product. The 33% and 35.5% assay tables are published below.
Product Specifications
ZINC SULPHATE MONOHYDRATE COARSE POWDER
33% Grade
| Property | Specification |
|---|---|
| Appearance | White Powder |
| Zinc (Zn) Content | 33 % Min. |
| Sulphur (S) Content | 15.00 % Min. |
| Iron (Fe) Content | 1.00 % Max. |
| pH (5% aqueous solution) | Above 4.0 |
| Solubility | Freely soluble in water |
| Moisture Content | Approx 1.00% (1.00% Max.) |
| Particle Size (Mesh) | 80+ mesh 65% |
| Insoluble Matter | 1.00 % Max. |
35.5% Grade
| Property | Specification |
|---|---|
| Appearance | White Powder |
| Zinc (Zn) Content | 35.50 % Min. |
| Sulphur (S) Content | 17.0 % Min. |
| Cadmium (Cd) Content | To customer specification |
| Lead (Pb) Content | To customer specification |
| Arsenic (As ) Content | To customer specification |
| Mercury (Hg ) Content | To customer specification |
| pH (5% aqueous solution) | Above 4.0 |
| Solubility | Freely soluble in water |
| Insoluble Matter | 1.0 % Max. |
Free flowing zinc sulphate: the coarse powder grade's trade name
This coarse powder zinc sulphate monohydrate is supplied as, and known in the trade as, free flowing zinc sulphate. It is one product with two names: the formal grade is coarse powder zinc sulphate monohydrate, and buyers who search for free flowing zinc sulphate are asking for this same grade. It is not a different or second product.
In handling terms, free flowing means the material does not cake, pours and meters cleanly through hoppers and augers, and stores without lumping. The coarser particle keeps dust low and flow consistent, so it is easy to weigh, dose and handle in bulk. Every specification is the same as the coarse powder assay table published above.
Typical handling data for the coarse powder is a particle size of about 80-plus mesh at 65 percent, with moisture near 1 percent. Because it flows and meters cleanly, it is used for bulk NPK blending, animal feed applications, and chemical processes that call for solid-to-solid mixing, where consistent flow keeps dosing and blending even.
Other Zinc Sulphate Monohydrate grades
- Zinc Sulphate Monohydrate (overview)
- Granular Zinc Sulphate Monohydrate
- Fine Powder Zinc Sulphate Monohydrate
- Feed Grade Zinc Sulphate Monohydrate
Key benefits of Free Flowing Zinc Sulphate (Coarse Powder Monohydrate, 33% & 35.5%)
- Rapid correction of zinc deficiency
- Promotes healthy root development
- Enhances plant vigour and growth
- Improves photosynthesis efficiency
- Increases crop yield
- Enhances produce quality
- Supplies zinc and sulphur together
- Improves nutrient use efficiency
- Increases tolerance to environmental stress
- Provides long residual effect in soil
- Suitable for a wide range of crops
- Cost-effective micronutrient solution
- Supports balanced plant nutrition in accordance with Liebig's Law of the Minimum, so crop growth is optimised by correcting the most limiting nutrient
Export and supply capability
Chakradhar Chemicals has manufactured Free Flowing Zinc Sulphate (Coarse Powder Monohydrate, 33% & 35.5%) in India since 1990 and exports to buyers across seven regions, including the United States.
Manufacturing capacity
30,000 MTPA installed capacity at our Muzaffarnagar plant, Uttar Pradesh, India. Bulk supply and repeat contract volumes are supported.
Certifications and compliance
Export markets served
We currently export to the United States and supply buyers across Asia, Africa, Europe, North America, South America, Latin America, Middle East.
Industries we supply
- United States: Animal Feed, Fertilizers, Mining
- Latin America: Industrial Applications
Why buyers choose Chakradhar Chemicals
- More than three decades of manufacturing excellence since 1990
- One of India's leading manufacturers of Zinc Sulphate products
- Installed production capacity of 30,000 MTPA
- Consistent product quality with stringent quality control
- ISO certified manufacturing facility and US FDA registration
- Advanced manufacturing technology with modern laboratory facilities
- Reliable global export experience across multiple countries
- Competitive pricing with timely delivery
- Customized packaging and private labeling options
- Strict compliance with international quality standards
- Long-term focus on customer satisfaction and sustainable business relationships
Packaging and Supply
- Standard Packaging: 25 kg and 50 kg HDPE woven bags with PE inner liner
- Jumbo Bags: 1,000 kg
- Bulk and Custom Packaging: Customized packaging to customer branding and specifications, including private labeling
- Minimum Order Quantity: 1 FCL (full container load) or 1 truckload; custom pack sizes on request
- Production Capacity: 30,000 MTPA installed capacity
- Bulk Supply: Bulk and container-load supply for domestic and export orders
- Export Markets: Asia, Africa, Europe, North America, South America, Latin America, Middle East
- Export Lead Time: Confirmed at the time of order, contact our sales team
- Documentation: Certificate of analysis, safety data sheet and technical data sheet supplied with every shipment
- Incoterms: FOB, CIF, CFR and Ex Works, other terms on request