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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 RoHS and REACH.
Strong tinting strength and consistent batch-to-batch color reproducibility.
Chemically inert in alkaline and acidic environments, ensuring compatibility with diverse binder systems.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance enamel coatings for domestic appliances and industrial metal substrates.
Colorants in refractory materials and heat-resistant concrete formulations.
Pigmentation of inorganic binders such as potassium silicate and sodium silicate paints.
Specialty applications in fire-retardant coatings and safety-critical signage pigments.
| Chemical Type | Complex metal oxide (Calcium Molybdate-based) |
| Product Form | Fine powder |
| Appearance | Brilliant red powder with slight orange undertone |
| Primary Applications | Ceramics, enamels, refractories, inorganic coatings |
| Key Features | Thermal stability, UV resistance, chemical inertness, non-volatility |
| Benefits | Long-term color retention, low migration risk, no heavy metals (Pb/Cd/Hg-free) |
| pH Stability Range | 4–12 |
| Particle Size (D50) | 1.2–1.8 µm |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RC13?
A: Cathay CATHAYCOAT Red RC13 is an iron oxide-based inorganic pigment, formulated to deliver high thermal stability and consistent chromatic performance in demanding coating systems.
Q2: Is RC13 suitable for high-temperature curing applications, such as coil coatings or powder coatings?
A: Yes — RC13 exhibits excellent thermal stability and retains its color integrity under typical industrial baking conditions up to 250 °C, making it well-suited for coil coatings, powder coatings, and other heat-cured systems.
Q3: How does RC13 perform in UV-exposed outdoor applications?
A: As a fully inorganic iron oxide pigment, RC13 offers outstanding UV resistance and weatherfastness, with minimal risk of fading or chalking when properly dispersed and incorporated into durable resin systems.
Q4: What are the recommended dispersion methods for optimal color development and stability?
A: For best results, RC13 should be dispersed using high-shear mixing or bead milling in compatible solvents or binder vehicles. Pre-wetting and gradual addition help prevent agglomeration and ensure uniform distribution throughout the formulation.
Q5: Can RC13 be used in waterborne coating systems?
A: Yes — RC13 is compatible with both solvent-borne and waterborne systems, including acrylic, epoxy, and polyurethane dispersions, provided appropriate dispersants and pH stabilization are employed during formulation.
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