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High thermal stability up to 800 °C, suitable for high-temperature ceramic and enamel applications.
Excellent lightfastness and weather resistance, ensuring long-term color retention under UV exposure.
Non-toxic and heavy-metal-free formulation compliant with global regulatory standards (RoHS, REACH).
Consistent particle size distribution for uniform dispersion and optimal opacity in pigment systems.
Chemically inert in alkaline and mildly acidic environments, enhancing compatibility with diverse binders.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance enamels for domestic appliances and industrial metal coatings.
Colorants in refractory materials including furnace linings and kiln furniture.
Pigmentation of glass frits and low-melting-point glasses for decorative and functional glassware.
Stabilized colorants in fire-resistant building materials and intumescent coatings.
| Chemical Type | Complex iron-based spinel (Fe–Cr–Al oxide) |
| Product Form | Fine dry powder |
| Appearance | Deep blue to violet-blue granular powder |
| Primary Applications | Ceramics, enamels, refractories, glass |
| Key Features | Thermal stability, UV resistance, chemical inertness |
| Benefits | Non-toxic, consistent batch-to-batch performance, low solubility in molten media |
| Density | ~4.2 g/cm³ (typical) |
| Moisture Content | <0.5% (by weight, 105 °C, 2 hrs) |
Q1: What is the primary chemical composition of Cathay FERROTINT Blue F28L?
A: Cathay FERROTINT Blue F28L is a cobalt-free, iron-based inorganic blue pigment, formulated as a modified mixed metal oxide system. Its color development relies on controlled crystalline structure and surface treatment rather than heavy metals or organic chromophores.
Q2: Is this pigment suitable for use in food-contact plastics or coatings?
A: While F28L is an inorganic pigment with inherent thermal and chemical stability, its suitability for food-contact applications depends on full regulatory assessment by the end-user’s compliance team. It is not pre-certified for specific food-contact regulations and requires formulation-level testing and documentation per applicable jurisdiction.
Q3: How does F28L perform under high-temperature processing conditions?
A: F28L exhibits excellent thermal stability and retains its blue hue without significant degradation or color shift during standard polymer processing—such as extrusion, injection molding, and calendering—up to approximately 300 °C. Performance may vary depending on residence time, atmosphere, and matrix compatibility.
Q4: Can F28L be used in water-based systems such as architectural paints or industrial coatings?
A: Yes—F28L is engineered with surface treatments that enhance dispersibility and stability in both aqueous and solvent-based media. For optimal performance in water-based systems, appropriate dispersants and pH control are recommended during formulation.
Q5: What is the typical dosage range when incorporating F28L into polymer compounds?
A: Dosage depends on the desired opacity, color strength, and base polymer. F28L is typically used at low concentrations, generally ranging from 0.1% to 2% by weight, with most applications falling between 0.3% and 1.2% for full-tone blue development.
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