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High thermal stability up to 1000°C, ensuring color retention in high-temperature processing.
Excellent lightfastness and weather resistance, suitable for outdoor applications.
Non-toxic, heavy-metal-free formulation compliant with global environmental regulations (RoHS, REACH).
Superior dispersion stability in aqueous and solvent-based systems.
Consistent particle size distribution for uniform color development and reduced agglomeration.
Ceramic glazes and frits for tableware and architectural tiles.
High-performance refractory coatings for industrial furnaces and kiln linings.
Colorants in fire-resistant building materials including cementitious composites and intumescent paints.
Pigmentation of specialty glass and enamel products.
Functional coloring agent in automotive under-hood components requiring thermal endurance.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Ni spinel structure) |
| Product Form | Free-flowing fine powder |
| Appearance | Dark brown to black granular powder |
| Primary Applications | Ceramics, refractories, high-temp coatings, specialty glass |
| Key Features | Thermal stability, UV resistance, chemical inertness, non-volatile |
| Benefits | Reduced batch variation, low dust generation, compatibility with alkaline matrices |
| pH (10% aqueous slurry) | 6.5 – 7.5 |
| Moisture Content (wt%) | ≤ 0.5% |
Q1: What is the primary chemical composition of BR-834M?
A: BR-834M is a mixed-metal oxide pigment based on iron and chromium oxides, engineered to deliver stable brown-to-black hues with high thermal and lightfastness. It contains no heavy metals of concern such as lead, cadmium, or cobalt.
Q2: Is BR-834M suitable for use in food-contact plastics?
A: Yes — BR-834M is formulated for compliance with global food-contact regulations for plastics, including FDA 21 CFR §178.3297 and EU Regulation (EC) No 1935/2004. Its inert, non-leaching inorganic structure supports safe application in packaging and processing equipment where pigment migration must be minimized.
Q3: How does BR-834M perform under high-temperature processing conditions?
A: BR-834M exhibits excellent thermal stability, maintaining color integrity and dispersion performance during extrusion, injection molding, and blow molding processes up to 300°C. It shows negligible decomposition or hue shift under typical polymer processing conditions.
Q4: Can BR-834M be used in water-based coatings and inks?
A: Yes — BR-834M is compatible with aqueous systems when properly surface-treated and dispersed. It delivers good rheological behavior and gloss retention in architectural paints, industrial coatings, and packaging inks, though optimal performance requires formulation-specific dispersant selection and milling.
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E-mail: wangxingqiang@ericwchem.com
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