Manganese Carbonate Powder for Pottery Body Stains
Short Product Description
Manganese Carbonate Powder for Pottery Body Stains is a ceramic-grade MnCO₃ material used as a colorant in clay bodies and glaze systems. It provides controlled manganese content for stable color development and uniform dispersion. Suitable for pottery stains, slips, and glaze formulations.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| MnCO₃ Purity | ≥ 98% |
| Manganese (Mn) Content | ≥ 44% |
| Particle Size | 200–325 mesh |
| Moisture | ≤ 1.0% |
| Bulk Density | 0.8–1.1 g/cm³ |
| Loss on Ignition | ≤ 36% |
| Iron (Fe) | ≤ 0.05% |
| Calcium (Ca) | ≤ 0.30% |
| Magnesium (Mg) | ≤ 0.30% |
| Lead (Pb) | ≤ 10 ppm |
| Arsenic (As) | ≤ 5 ppm |
| Cadmium (Cd) | ≤ 5 ppm |
Key Features
Stable manganese source for ceramic color development in oxidizing and reducing atmospheres
High dispersion compared to manganese oxide, enabling uniform stain distribution
Controlled Fe, Ca, Mg impurities to avoid unwanted color shifts and glaze defects
Low heavy metals (Pb, Cd, As) for safer ceramic applications
Consistent particle size for improved mixing in slips and clay bodies
Manganese Carbonate Powder for Pottery Body Stains supports predictable brown, purple, and black tones
Applications
Pottery body stains – added to clay bodies to create speckled or uniform coloration during firing
Ceramic glazes – provides brown, black, and purple hues depending on glaze chemistry and firing conditions
Slip decoration – improves dispersion for consistent surface color effects
Brick and tile coloring – used to adjust base color or create speckled finishes
Studio ceramics – Manganese Carbonate Powder for Pottery Body Stains enables controlled artistic color variation
Problems This Product Solves
Poor dispersion of oxide pigments → carbonate form improves uniform color distribution in glazes
Inconsistent color development → stable Mn content ensures repeatable firing results
Excess iron contamination → low Fe minimizes muddy or undesired tones
Glaze defects from impurity imbalance → controlled Ca and Mg improve formulation stability
Safety risks from heavy metals → low Pb, Cd, As support compliance in ceramic materials
Packaging & Supply
25 kg kraft paper bags with PE liner
Palletized export packaging
Available in 20GP / 40HQ container shipment
Samples available for ceramic testing and formulation trials
Customization & Technical Support
Adjustable manganese (Mn) content based on ceramic formulation needs
Low-iron (Fe) grades for high-purity glaze systems
Custom particle size for slips, glazes, or body staining
Technical support for ceramic stain and glaze formulation
FAQ
1. How does manganese carbonate compare to manganese dioxide in ceramics?
Manganese carbonate provides better dispersion in glazes and clay bodies, resulting in more uniform color. However, it has lower coloring strength per unit Mn and may require higher dosage.
2. Why is impurity control (Fe, Ca, Mg) important in pottery stains?
Iron can darken or muddy glaze colors, while Ca and Mg affect melting behavior and glaze viscosity. Controlled impurity levels ensure consistent color and firing performance.
3. What colors can manganese carbonate produce in pottery?
It typically produces brown, black, and purple tones depending on glaze composition and firing conditions.
4. Is Manganese Carbonate Powder for Pottery Body Stains safe for ceramic use?
When heavy metals like Pb, Cd, and As are controlled within limits, it is suitable for ceramic applications. Proper handling and ventilation are recommended due to manganese dust.
5. How should manganese carbonate be stored?
Store in a dry, sealed environment to prevent moisture absorption and agglomeration. Stable storage ensures consistent performance in ceramic formulations.