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China Suppliers Factory for Phosphating Grade Manganese Carbonate: High-Quality Chemical Solutions
🧪 Physical and Chemical Properties
Basic Information
Molecular formula: MnCO3
Molecular weight: 114.95
CAS number: 598-62-9
Molecular weight: 114.95
CAS number: 598-62-9
Appearance
Light pink to light brown powder, in the form of rose colored triangular diamond crystals or amorphous powder.
Solubility
Almost insoluble in water; soluble in dilute inorganic acids. Dissolved in phosphoric acid solution, clear and transparent, without precipitation.
Stability
Stable in dry air, prone to oxidation in humid environments. Thermal decomposition generates manganese oxide and carbon dioxide.
📋 Quality Indicators (HG/4203-2011 Standard)
| Items | Specifications |
|---|---|
| Appearance | Light pink to light brown powder |
| Mn Content (%) | ≥ 44.0 |
| Sulfate Content (%) | ≤ 0.50 |
| Chloride Content (%) | ≤ 0.05 |
| Heavy Metals (as Pb, %) | ≤ 0.05 |
| Iron (Fe) Content (%) | ≤ 0.05 |
| Nitrate Insoluble Matter (%) | ≤ 0.10 |
| Phosphoric Acid Solubility Test | Clear solution without precipitate |
⚙️ Applications
✔
Core Application: Metal Surface Phosphating Treatment
A key raw material for manganese-based phosphating solutions. It generates a dense phosphate film, significantly improving corrosion resistance, wear resistance, and paint film adhesion.
Widely used in black phosphating processes for automotive gears, fasteners, bearings, and mechanical components.
✔
Auxiliary Uses
High-end ceramic glazes, electronic grade manganese salt precursors, alloy additives, etc.
📦 Packaging, Storage and Transportation
Packaging
Woven bags lined with polyethylene plastic bags, net weight 25kg/bag. Double-layer moisture-proof sealed packaging available.
Storage
Cool, ventilated, and dry warehouse. Keep away from moisture, light, and oxidation. Avoid acidic materials and dust.
Transportation
Protect from rain and direct sunlight. Handle with care. Moisture will directly affect the phosphating performance.
Fire Control
In case of fire, use water, sand, or fire extinguishers for fire fighting.
❓ Frequently Asked Questions
1. What is the primary industrial use of Manganese Carbonate?
Its core application is in metal surface phosphating treatment, especially for automotive components like gears and bearings, to enhance corrosion and wear resistance.
2. Is this product soluble in water?
No, Manganese Carbonate is almost insoluble in water. However, it is soluble in dilute inorganic acids and phosphoric acid.
3. How does moisture affect the product?
Moisture can cause oxidation and discoloration. More importantly, moisture during transportation or storage can directly affect its performance in phosphating processes.
4. What quality standard does your Manganese Carbonate follow?
Our product adheres to the HG/4203-2011 standard, ensuring a Manganese (Mn) content of ≥ 44.0%.
5. Can it be used for electronic applications?
Yes, it serves as an auxiliary material for electronic grade manganese salt precursors and high-end ceramic glazes.
6. What is the recommended storage condition?
It should be stored in a cool, ventilated, and dry warehouse, strictly separated from acidic materials and protected from moisture.