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High color strength and excellent tinting power for consistent, vibrant red-brown shades.
Outstanding thermal stability suitable for high-temperature processing up to 800 °C.
Excellent UV resistance and weatherfastness, ensuring long-term color retention in outdoor applications.
Low soluble salt content, minimizing corrosion risk in metal-rich systems and coatings.
Good dispersibility in aqueous and solvent-based media with minimal grinding energy required.
Architectural and industrial coatings requiring durable, non-fading earth-tone pigmentation.
Cementitious products including colored concrete, pavers, and precast elements.
Plastic masterbatches for PP, PE, and PVC where heat stability and migration resistance are critical.
Ceramic glazes and underglaze decorations for stoneware and architectural tiles.
Oil and water-based inks for packaging and decorative printing applications.
| Chemical Type | α-Fe₂O₃ (Hematite) |
| Product Form | Fine powder |
| Appearance | Red-brown free-flowing powder |
| Primary Applications | Coatings, construction materials, plastics, ceramics, inks |
| Key Features | Thermal stability, UV resistance, low soluble salts, high opacity |
| Particle Size (D50) | 0.8–1.2 µm |
| pH (5% aqueous slurry) | 6.5–7.5 |
| Volatile Matter (105 °C, 2 h) | ≤0.5% |
Q1: What is the primary chemical composition and crystal structure of 4660 Iron Oxide Pigment?
A: 4660 is a synthetic iron oxide pigment based predominantly on hematite (α-Fe₂O₃), offering high chromatic strength and excellent lightfastness. Its particle morphology and surface treatment are engineered for optimal dispersion and stability in demanding polymer and coating systems.
Q2: Is 4660 suitable for use in food-contact plastics or pharmaceutical packaging?
A: While 4660 meets general industrial purity requirements, it is not pre-qualified for direct food-contact or pharmaceutical applications under global regulatory frameworks. Customers must conduct full compliance validation—including extractables testing and regulatory review—based on their specific formulation and end-use conditions.
Q3: How does 4660 perform under UV exposure and elevated processing temperatures?
A: 4660 exhibits outstanding thermal stability up to typical polymer processing temperatures and superior UV resistance due to its fully oxidized, crystalline structure—making it well-suited for outdoor applications where long-term color retention is critical.
Q4: What dispersion methods are recommended for optimal performance in solvent-based coatings?
A: For solvent-based systems, high-shear dispersion using bead mills or three-roll mills is recommended. Pre-wetting with compatible solvents and incorporation of standard wetting/dispersing additives typically yields uniform, stable dispersions with minimal agglomeration.
Q5: What is the typical dosage range when using 4660 in polyolefin masterbatches?
A: Dosage depends on the desired shade intensity and substrate opacity, but 4660 is generally used at low concentrations—typically ranging from 0.1% to 2% by weight—in polyolefin masterbatches to achieve consistent, durable coloration without compromising melt flow or mechanical properties.
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E-mail: wangxingqiang@ericwchem.com
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