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High color strength and excellent tinting power for consistent, vibrant red-brown hues.
Outstanding lightfastness and weather resistance, ensuring long-term color stability under UV exposure.
Good dispersibility in both aqueous and solvent-based systems without requiring specialized grinding.
Chemically inert and non-reactive with common binders, resins, and cementitious matrices.
Low oil absorption (≤25 g/100g), enabling high loading levels and improved formulation efficiency.
Cement-based architectural coatings and decorative mortars.
Exterior wall paints and textured finish systems.
Concrete pavers, precast concrete elements, and terrazzo flooring.
Plaster, stucco, and EIFS (Exterior Insulation and Finish Systems).
Industrial floor coatings and anti-slip surfacing compounds.
| Chemical Type | α-Fe₂O₃ (Hematite-type iron oxide) |
| Product Form | Fine dry powder |
| Appearance | Free-flowing reddish-brown powder |
| Primary Applications | Architectural coatings, concrete coloration, plasters |
| Key Features | UV-stable, alkali-resistant, non-bleeding |
| Particle Size (D50) | 0.8–1.2 μm |
| pH (5% aqueous suspension) | 6.5–8.0 |
| Volatile Matter (105°C, 2h) | ≤0.5% |
Q1: What is the primary chemical composition and crystal structure of Yipin 4120?
A: Yipin 4120 is a synthetic α-phase iron(III) oxide (hematite), characterized by high crystallinity and excellent phase purity. Its robust rhombohedral crystal structure contributes to superior thermal stability and UV resistance.
Q2: Is Yipin 4120 suitable for use in food-contact coatings or plastics?
A: Yes — Yipin 4120 is manufactured under strict quality control to meet general requirements for pigments used in non-intent-to-contact food packaging applications (e.g., exterior layers of containers, industrial drums). It is not intended for direct, prolonged food contact unless validated by the end-user’s regulatory assessment.
Q3: How does Yipin 4120 perform under high-temperature processing conditions?
A: Yipin 4120 exhibits outstanding thermal stability, retaining its color integrity and chemical inertness up to approximately 800 °C in air. It is widely selected for applications involving extrusion, calendering, and powder coating curing cycles without significant hue shift or decomposition.
Q4: What dispersion methods are recommended for optimal performance in solvent-based systems?
A: For solvent-based paints and inks, high-shear mechanical dispersion using bead mills or three-roll mills is recommended. Pre-wetting with compatible solvents and addition of appropriate dispersants enhance deagglomeration and long-term suspension stability.
Q5: Can Yipin 4120 be used in waterborne architectural coatings?
A: Yes — Yipin 4120 is compatible with many waterborne acrylic and vinyl acetate-based systems when properly dispersed and stabilized. Its low solubility and neutral surface chemistry minimize interaction with common thickeners and biocides, supporting good shelf life and film integrity.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
