Agriculture Grade Manganese Carbonate for Micronutrient Fertilizers
Short Product Description
Agriculture Grade Manganese Carbonate is a stable manganese (Mn ≥44%) source used in micronutrient fertilizers. It is suitable for soil application and NPK blending to correct manganese deficiency in crops. This product ensures controlled impurity levels for safe agricultural use.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| MnCO₃ Purity | ≥ 98% |
| Manganese (Mn) Content | ≥ 44% |
| Particle Size | 80–200 mesh |
| Moisture | ≤ 1.5% |
| Bulk Density | 0.9–1.2 g/cm³ |
| Solubility in Dilute Acid | ≥ 95% |
| Iron (Fe) | ≤ 0.05–0.1% |
| Calcium (Ca) | ≤ 0.3% |
| Magnesium (Mg) | ≤ 0.3% |
| Lead (Pb) | ≤ 10–30 ppm |
| Arsenic (As) | ≤ 5 ppm |
| Cadmium (Cd) | ≤ 5 ppm |
Key Features
Stable manganese source for long-term soil nutrient supply
Higher agronomic efficiency compared to oxide forms due to gradual release
Controlled Fe, Ca, Mg impurities to avoid antagonism in nutrient uptake
Low heavy metals (Pb, Cd, As) for fertilizer compliance
Consistent particle size suitable for uniform blending in NPK formulations
Agriculture Grade Manganese Carbonate ensures reliable Mn supplementation in micronutrient fertilizers
Applications
Soil micronutrient fertilizers – provides manganese to correct deficiencies in alkaline or high-pH soils, improving plant growth and photosynthesis
NPK blending – compatible with bulk fertilizer production for balanced trace element supply
Foliar and granular formulations – micronized particles enable slow-release Mn availability in crops
Crop nutrition (cereals, legumes, fruits) – supports enzyme activation and chlorophyll synthesis
Micronutrient premix production – Agriculture Grade Manganese Carbonate used as a standard Mn source in fertilizer blends
Problems This Product Solves
Manganese deficiency in soil → supplies essential Mn for photosynthesis and enzyme systems
Poor Mn availability in alkaline soils → carbonate form improves gradual nutrient release
Excess iron interference in fertilizers → controlled Fe levels reduce nutrient antagonism
Heavy metal contamination risks → low Pb, Cd, As ensures compliance with fertilizer standards
Uneven blending in bulk fertilizers → uniform particle size improves distribution
Packaging & Supply
25 kg kraft paper bags with PE liner
Palletized export packaging
Container shipment (20GP / 40HQ)
Sample availability for fertilizer testing
Customization & Technical Support
Adjustable manganese (Mn) content
Low-iron (Fe) grade available for sensitive formulations
Custom particle size for granulation or powder blending
Support for fertilizer formulation and micronutrient optimization
FAQ
1. How does manganese carbonate compare to manganese sulfate in fertilizers?
Manganese carbonate provides a slower release of Mn compared to sulfate, making it suitable for long-term soil correction. It is less prone to leaching and offers sustained nutrient availability.
2. Why is Fe content important in Agriculture Grade Manganese Carbonate?
Excess iron can interfere with manganese uptake in plants. Controlled Fe levels help maintain balanced micronutrient absorption and improve fertilizer efficiency.
3. What is the typical Mn content in Agriculture Grade Manganese Carbonate?
Most products contain ≥44% manganese, which is a standard level for fertilizer-grade MnCO₃. This ensures sufficient trace element supply for crop nutrition.
4. Are heavy metals like Pb controlled in this product?
Yes, lead (Pb), cadmium (Cd), and arsenic (As) are strictly limited to ensure compliance with agricultural safety standards and minimize environmental risks.
5. Is manganese carbonate suitable for NPK blending?
Yes, it has good compatibility with common fertilizer carriers and can be evenly dispersed due to its controlled particle size and stability.