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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 major global regulatory standards including EN 71-3 and RoHS.
Consistent particle size distribution ensuring uniform dispersion and optimal color development in matrices.
Strong tinting strength and high opacity, enabling efficient pigment loading and cost-effective formulation.
Ceramic glazes and frits for tableware, sanitaryware, and architectural tiles.
High-performance enamels for domestic appliances and industrial metal coatings.
Colorants in refractory materials and heat-resistant coatings.
Pigmentation of inorganic binders in construction mortars and facade systems.
Stabilized red shades in glass batch formulations for container and decorative glass.
| Chemical Type | Iron-based mixed-metal oxide (Fe–Cr–Al spinel) |
| Product Form | Fine dry powder |
| Appearance | Uniform brick-red to maroon free-flowing powder |
| Primary Applications | Ceramics, enamels, refractories, glass, construction materials |
| Key Features | Thermal stability, UV resistance, chemical inertness, non-volatility |
| Benefits | Color consistency, low migration risk, compatibility with acidic and alkaline matrices |
| pH Stability Range | 4–12 (in aqueous dispersion) |
| Heavy Metals Content | Compliant with EU REACH SVHC threshold (< 100 ppm total Cd/Pb/Hg/Cr⁶⁺) |
Q1: What is the primary chemical composition of CATHAYRED RA12BD?
A: CATHAYRED RA12BD is an iron oxide-based inorganic pigment, formulated primarily with hematite (α-Fe₂O₃) and carefully engineered surface treatments to enhance dispersion stability and compatibility in diverse polymer and coating systems.
Q2: Is CATHAYRED RA12BD suitable for use in food-contact plastics?
A: Yes — this pigment is manufactured under strict quality control protocols and complies with general requirements for pigments used in food-contact applications, including adherence to FDA 21 CFR §178.3297 and EU Directive 2002/72/EC for functional barrier compliance. Final regulatory acceptance depends on the full formulation and end-use conditions.
Q3: How does CATHAYRED RA12BD perform under high-temperature processing conditions?
A: It exhibits excellent thermal stability, maintaining color integrity and minimal degradation during standard polymer processing such as extrusion and injection molding up to approximately 280 °C, depending on residence time and matrix composition.
Q4: What are the recommended dispersion methods for optimal performance in coatings?
A: For best results, pre-disperse using high-shear mixing or bead milling in the chosen vehicle. The pigment responds well to conventional dispersants and wetting agents compatible with aqueous and solvent-borne systems, and typically achieves stable, low-viscosity dispersions without excessive agglomeration.
Q5: Can CATHAYRED RA12BD be used alongside organic pigments or other inorganic colorants in multi-pigment formulations?
A: Yes — it demonstrates good compatibility in mixed-pigment systems and does not promote adverse interactions such as flocculation or chromatic shift when properly dispersed and stabilized. Compatibility testing under actual formulation conditions is recommended to confirm batch-to-batch consistency.
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E-mail: wangxingqiang@ericwchem.com
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