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Short Product Description
Black Mineral Pigment MnO₂ for Exterior Construction Paints is an inorganic manganese dioxide pigment designed for architectural and industrial coating formulations. With typical MnO₂ purity of 75–90%, this pigment provides deep black coloration, excellent weather resistance, and stable performance in exterior paint systems. It is suitable for masonry coatings, façade paints, cement-based coatings, and protective building materials.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| MnO₂ Purity | 75–90% |
| Particle Size | 5–25 μm (D50) |
| Surface Area | 10–35 m²/g |
| Moisture | ≤1.0% |
| Bulk Density | 0.8–1.2 g/cm³ |
| Crystal Phase | Pyrolusite-type MnO₂ |
Key Features
Deep black mineral coloration suitable for architectural coatings and decorative construction paints.
Excellent weather and UV stability, maintaining pigment integrity in outdoor exposure.
High chemical stability, resistant to alkali environments typical of cement and masonry substrates.
Uniform particle size distribution for consistent dispersion in water-based and solvent-based coatings.
Black Mineral Pigment MnO₂ for Exterior Construction Paints offers stable tinting strength in façade coatings and building material paints.
Low solubility and good thermal stability, ensuring pigment durability in harsh environmental conditions.
Applications
Exterior construction paints – Black Mineral Pigment MnO₂ for Exterior Construction Paints provides durable color in façade and masonry coatings.
Cement and concrete coatings – stable inorganic pigment compatible with alkaline mineral substrates.
Roof and wall coatings – enhances UV stability and color permanence in outdoor architectural paints.
Industrial protective coatings – provides mineral black tone for protective steel and infrastructure coatings.
Decorative building materials – used in colored cement, concrete blocks, and mineral plasters for long-term color stability.
Problems This Product Solves
Color fading in outdoor coatings → MnO₂ mineral pigment offers strong UV and weather resistance.
Poor compatibility with alkaline substrates → manganese dioxide remains stable in cement-based systems.
Inconsistent pigment dispersion → controlled particle size improves dispersion in paint formulations.
Short coating lifespan in exterior environments → inorganic mineral structure enhances durability and color stability.
Pigment degradation under heat or sunlight → thermally stable MnO₂ maintains coating appearance over time.
Packaging & Supply
Standard packaging: 25 kg fiber drum or kraft paper bag with PE liner
Suitable for international export and bulk transport
Laboratory samples (100 g – 1 kg) available for coating formulation testing
Customization & Technical Support
The manufacturer can provide:
Particle size distribution adjustment for specific coating systems
MnO₂ purity customization depending on pigment intensity requirements
Bulk industrial supply for paint manufacturers and building material plants
Technical consultation for dispersion optimization and coating formulation compatibility
FAQ
What purity level is typical for MnO₂ pigment used in construction paints?
Industrial pigment-grade manganese dioxide used in coatings typically ranges from 75% to 90% MnO₂ purity. This level provides strong color intensity while maintaining good dispersion and cost efficiency in large-scale coating formulations.
Is Black Mineral Pigment MnO₂ for Exterior Construction Paints suitable for cement-based coatings?
Yes. MnO₂ pigments are chemically stable in alkaline environments, making them compatible with cement, mortar, and mineral-based coatings used in construction materials.
Does MnO₂ pigment provide good UV and weather resistance?
Yes. As an inorganic mineral pigment, manganese dioxide shows strong resistance to UV radiation and outdoor weathering, helping coatings maintain their color stability over long exposure periods.
How much MnO₂ pigment is typically used in exterior paint formulations?
Typical pigment loading ranges from 3–10% of the total formulation, depending on the desired color intensity and the presence of other pigments or fillers in the coating system.
What is the shelf life of manganese dioxide pigment for coatings?
When stored in a dry, sealed container at room temperature, MnO₂ pigment typically maintains stable quality for at least 24 months without significant degradation.