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High thermal stability up to 800 °C, suitable for high-temperature ceramic and enamel applications.
Excellent lightfastness and weather resistance, maintaining color integrity under prolonged UV exposure.
Non-toxic composition compliant with global regulatory standards including REACH and RoHS.
Superior chemical inertness—resistant to acids, alkalis, and solvents commonly used in industrial coatings.
Consistent particle size distribution ensuring uniform dispersion and optimal color development in matrix systems.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance enamel coatings for cookware, heating appliances, and industrial metal substrates.
Colorants in inorganic-based architectural mortars and facade rendering systems.
Pigmentation of refractory materials including kiln furniture and furnace linings.
Stabilized red hue in glass batch formulations for container and decorative glass products.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Al spinel-based) |
| Product Form | Fine dry powder |
| Appearance | Brilliant ruby-red powder with slight metallic sheen |
| Primary Applications | Ceramics, enamels, refractories, architectural mortars, specialty glass |
| Key Features | Thermal stability, UV resistance, acid/alkali inertness, non-volatility |
| Benefits | Color consistency at high firing temperatures, low migration risk, long-term outdoor durability |
| Density (g/cm³) | 4.2–4.5 |
| Moisture Content (wt%) | ≤0.5 |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RA12?
A: Cathay CATHAYCOAT Red RA12 is an iron oxide–based inorganic pigment, formulated to deliver high chroma, heat stability, and UV resistance. Its composition centers on modified hematite (α-Fe₂O₃) with proprietary surface treatment for enhanced dispersion and compatibility in demanding polymer systems.
Q2: Is RA12 suitable for use in food-contact plastics or pharmaceutical packaging?
A: RA12 is designed for industrial and general-purpose applications where regulatory compliance for direct food contact is not required. It is not pre-certified for EU Plastics Regulation (EU) No 10/2011 or FDA 21 CFR §178.3297. Customers requiring food-grade pigments must conduct full formulation-level compliance testing and consult applicable regional regulations.
Q3: How does RA12 perform under high-temperature processing conditions?
A: RA12 exhibits excellent thermal stability and retains its red hue without significant darkening or decomposition up to approximately 800 °C in air. It is widely used in engineering thermoplastics processed at temperatures exceeding 280 °C, including polyamide and polyphenylene sulfide compounds.
Q4: What are the recommended dispersion methods for optimal color development?
A: For best results, RA12 should be dispersed using high-shear compounding—such as twin-screw extrusion or high-intensity melt mixing—to ensure uniform distribution and minimize agglomeration. Pre-dispersed masterbatches are also commonly employed to simplify handling and improve batch-to-batch consistency.
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