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High thermal stability suitable for processing temperatures up to 1000 °C.
Excellent chemical resistance against acids, alkalis, and solvents.
Non-toxic and heavy-metal-free formulation compliant with global regulatory standards.
Superior lightfastness and weather resistance for long-term outdoor performance.
Consistent particle size distribution ensuring uniform dispersion and color reproducibility.
Ceramic glazes and underglaze decorations.
High-performance architectural coatings and façade paints.
Plastic coloration for automotive interior components.
Coloration of construction materials including concrete, terracotta, and roof tiles.
Specialty inks for heat-resistant labeling and industrial marking.
| Chemical Type | Mixed metal oxide (Zinc Iron Chromite-based) |
| Product Form | Free-flowing powder |
| Appearance | Yellow-brown to olive-yellow granular powder |
| Primary Applications | Ceramics, architectural coatings, plastics, construction materials |
| Key Features | Heat stability, UV resistance, pH neutrality, non-volatility |
| Benefits | Color consistency, low migration, RoHS/REACH compliant |
| Density (approx.) | 4.8–5.2 g/cm³ |
| Moisture Content (max.) | 0.5 wt.% |
Q1: What is the primary chemical composition of HEUCODUR Yellow 2550?
A: HEUCODUR Yellow 2550 is a high-performance inorganic yellow pigment based on a mixed metal oxide system, engineered for thermal and chemical stability. Its exact phase composition is proprietary to Heubach, but it is formulated to deliver consistent chromatic performance without organic dye components.
Q2: Is this pigment suitable for use in polyolefin compounds processed at high temperatures?
A: Yes — HEUCODUR Yellow 2550 is specifically designed for demanding polymer processing conditions, including extrusion and injection molding of polyolefins. It exhibits excellent thermal stability up to typical polyolefin processing temperatures and maintains color integrity without blooming or degradation.
Q3: How does HEUCODUR Yellow 2550 compare to traditional cadmium-based yellows in terms of regulatory compliance and safety?
A: Unlike cadmium-based pigments, HEUCODUR Yellow 2550 is cadmium-free and formulated to support compliance with global regulatory frameworks restricting heavy metals in plastics, coatings, and consumer goods. It is widely accepted in applications where cadmium alternatives are required.
Q4: What dispersion characteristics should processors expect during compounding?
A: The pigment is supplied in a surface-treated, free-flowing powder form optimized for efficient wetting and dispersion in non-polar polymer matrices. Typical dispersion is achieved using standard high-shear compounding equipment; pre-mixing with carrier resin or masterbatch dilution is recommended for optimal homogeneity.
Q5: Can HEUCODUR Yellow 2550 be used in food-contact plastics?
A: While the pigment itself contains no intentionally added restricted substances, suitability for food-contact applications depends on final formulation, processing conditions, and applicable regional regulations. Customers must conduct full regulatory assessment and migration testing specific to their end-use configuration before approval.
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E-mail: wangxingqiang@ericwchem.com
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