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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 EN 71-3 and RoHS.
Consistent particle size distribution ensuring uniform dispersion and optimal opacity in pigment systems.
Chemically inert in acidic and alkaline environments, offering broad compatibility with binders and matrices.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance architectural coatings requiring long-term color retention.
Coloration of glass frits and low-melting-point enamels for metal substrates.
Pigmentation of refractory materials and fireproofing composites.
Specialty inks for heat-transfer printing on textiles and industrial labels.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Al spinel-based) |
| Product Form | Fine dry powder |
| Appearance | Brilliant reddish-brown granular powder |
| Primary Applications | Ceramics, enamels, glass, high-temp coatings |
| Key Features | Thermal stability, UV resistance, non-volatility |
| Benefits | Color consistency, low binder demand, heavy-metal-free |
| Storage Conditions | Keep in cool, dry, well-ventilated area; avoid moisture absorption |
| Regulatory Compliance | REACH registered; meets ISO 8124-3 and ASTM D4236 |
Q1: What is the primary chemical composition of CATHAYRED RA18YD?
A: CATHAYRED RA18YD is a high-performance inorganic red pigment based on a modified iron oxide–chromium oxide solid solution system, engineered for enhanced thermal stability and chromatic strength in demanding industrial applications.
Q2: Is CATHAYRED RA18YD suitable for use in food-contact plastics or coatings?
A: This pigment is not certified for direct food-contact applications under major global regulatory frameworks. It is intended for non-food-contact industrial coatings, construction materials, and general-purpose plastics where high heat resistance and weatherfastness are required.
Q3: How does RA18YD perform under high-temperature processing conditions?
A: RA18YD exhibits excellent thermal stability, maintaining color integrity during compounding and extrusion processes up to approximately 350 °C — making it well-suited for engineering thermoplastics and high-bake coating systems.
Q4: What dispersion methods are recommended for optimal performance in solvent-based coatings?
A: For solvent-based systems, pre-wetting with polar solvents followed by high-shear dispersing (e.g., using bead mills or high-speed dissolvers) is recommended. Compatibility testing with specific resin/solvent combinations is advised to ensure uniform distribution and maximum color development.
Q5: Can RA18YD be used in combination with other inorganic pigments?
A: Yes — RA18YD demonstrates good compatibility with common inorganic pigments such as titanium dioxide, carbon black, and selected iron oxide yellows and browns. However, preliminary compatibility and stability testing is recommended when blending with strongly acidic or alkaline pigments or additives.
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