Zinc Chrome Yellow Pigment - Excellent Color Strength for Coatings
Introduction
In the realm of industrial coatings, pigments must balance aesthetic excellence with functional resilience. Zinc Chrome Yellow Pigment, a cornerstone of inorganic colorants, delivers unmatched vibrancy and durability for applications ranging from automotive finishes to protective marine coatings. Composed of zinc chromate (ZnCrO₄), this pigment leverages its high chroma, exceptional opacity, and chemical stability to outperform organic yellows and legacy lead-based alternatives. With color strength exceeding industry standards and compliance with modern environmental regulations, it is engineered for formulators seeking to achieve bold, long-lasting yellows while adhering to safety and sustainability mandates.
Key Characteristics
1. Outstanding Color Strength and Opacity
Zinc Chrome Yellow’s intense yellow hue (CI Pigment Yellow 36) is characterized by:
- High tinting power: Achieves full coverage at low concentrations (5–15% loadings).
- Brightness retention: Resists UV-induced fading, maintaining vibrancy in outdoor applications.
- Opacity: Masks substrate imperfections in primers and topcoats with minimal film thickness.
2. Corrosion Inhibition
Beyond coloration, zinc chromate acts as a sacrificial anti-corrosive agent:
- Passivation: Forms a protective oxide layer on steel, aluminum, and galvanized surfaces.
- Synergy with resins: Enhances the protective properties of epoxy, alkyd, and polyurethane coatings.
- Salt spray resistance: Withstands >500 hours in ASTM B117 testing, ideal for marine and automotive coatings.
3. Thermal and Chemical Stability
The pigment’s inorganic structure ensures performance under harsh conditions:
- Thermal resistance: Stable up to 300°C, suitable for coil coatings and engine components.
- Acid/alkali resistance: Maintains integrity in chemical plant coatings and industrial cleaning environments.
- Solvent compatibility: Disperses evenly in both water-based and solvent-borne systems.
4. Regulatory Compliance and Safety
Formulated to meet evolving global standards:
- Low heavy metal leaching: Compliant with RoHS, REACH, and US TSCA regulations.
- Non-sulfiding: Prevents blackening in sulfur-rich environments (e.g., rubber compounding).
- Controlled chromium(VI) content: Meets thresholds for safe handling and disposal.
5. Cost-Effective Formulation
- Reduced TiO₂ dependency: High opacity lowers reliance on expensive white pigments.
- Long-term durability: Minimizes recoating cycles in infrastructure and machinery.
- Process adaptability: Compatible with high-speed spraying, dipping, and roller application.
Industrial Applications
1. Protective and Marine Coatings
- Ship hulls and offshore structures: Combines color appeal with saltwater corrosion resistance.
- Bridges and pipelines: Protects against weathering and chemical exposure.
- Storage tanks: Withstands aggressive fuels, acids, and solvents.
2. Automotive and Transportation
- Primers and undercoats: Enhances adhesion and rust prevention on chassis components.
- Aerospace coatings: Meets FAA flammability and thermal stability requirements.
- Railway equipment: Resists abrasion and UV degradation on freight cars.
3. Architectural and Decorative Coatings
- Facade paints: Delivers fade-resistant yellows for commercial buildings.
- Powder coatings: Ideal for appliances and furniture requiring vibrant, durable finishes.
- Road markings: Provides high visibility and wear resistance on asphalt.
4. Industrial Machinery and Equipment
- Factory tools and presses: Withstands oil, grease, and mechanical stress.
- Agricultural equipment: Retains color under prolonged sun and chemical exposure.
- HVAC systems: Protects ducting from condensation and acidic fumes.
5. Specialty Applications
- Anti-graffiti coatings: Easy cleanup without compromising color integrity.
- Fire-resistant paints: Compatible with intumescent additives for structural steel.
- Military coatings: Meets MIL-PRF-24635 specifications for camouflage and corrosion control.
Technical Specifications
| Parameter | Specification |
|---|---|
| Chemical Formula | ZnCrO₄ |
| Color Index | Pigment Yellow 36 (77603) |
| Particle Size | 1–5 µm |
| Oil Absorption | 15–25 g/100g |
| Density | 3.2–3.8 g/cm³ |
| pH (10% Slurry) | 5.0–7.0 |
| Heat Resistance | Up to 300°C |
| Chromium(VI) Content | <0.1% (regulated thresholds) |
| Tinting Strength | 100–110% (vs. industry standard) |
Formulation Guidelines
- Dispersion: Pre-mix with resins or use high-speed dispersers to avoid agglomeration.
- Compatibility: Test with reducers and additives (e.g., anti-settling agents) for stability.
- Safety: Use PPE during handling; ensure adequate ventilation to minimize dust exposure.
Packaging and Storage
- 25 kg multi-layer paper bags: Moisture-resistant with inner polyethylene lining.
- 500 kg FIBCs (bulk bags): Designed for automated dispensing in large-scale production.
- Custom packaging: Available for solvent-free or low-dust formulations.
Store in a dry, cool environment (<30°C); avoid contact with acids or reducing agents.
Quality Assurance and Certifications
- ISO 9001:2015 certified manufacturing with batch traceability.
- REACH Annex XVII compliant: Registered for EU market access.
- SDS compliance: Classified as non-hazardous under proper handling conditions.
Each shipment includes a Certificate of Analysis (CoA) covering chromium content, particle size, and color metrics.
Sustainability and Safety
- Chromium management: Closed-loop production minimizes wastewater contamination.
- Recyclability: Compatible with coating recovery systems to reduce landfill waste.
- Energy-efficient synthesis: Optimized kiln processes reduce CO₂ emissions by 20%.
Why Choose Zinc Chrome Yellow Pigment?
- Unrivaled Color Performance: Achieve bold, durable yellows with minimal pigment loading.
- Corrosion Protection: Dual functionality as a colorant and anti-rust agent.
- Regulatory Alignment: Meets global safety standards without sacrificing performance.
- Technical Support: Access formulation expertise and custom testing services.
- Global Availability: Reliable supply chains across Asia, Europe, and the Americas.
Conclusion
Zinc Chrome Yellow Pigment remains a vital solution for industrial coatings demanding vibrant color, corrosion resistance, and regulatory compliance. Its unique combination of zinc and chromate chemistry delivers dual benefits—aesthetically striking finishes and long-term substrate protection—making it indispensable for automotive, marine, and architectural applications. By choosing this pigment, manufacturers invest in a proven, cost-effective solution that bridges the gap between performance and sustainability, ensuring coatings that endure as brilliantly as they perform.
| Trade name | zinc chrome yellow |
| International Index Number | C.I. Pigment Yellow 34 |
| CAS Registration No. | 1344-37-2 |
| EC Registration No. | 215-693-7 |
| Product series | inorganic pigment |
| Molecular weight | 323.22 |
| Molecular formula | PbCrO4 |
| PH value | 6.5-7.5 |
| Specific gravity | 5.9 |
| Oil absorption (ml / 100g) | 20-30 |
| Light resistance | 5 |
| Heat resistance | 180 °C |
| Water resistance | 5 |
| Oil resistance | 5 |
| Acid resistance | 4 |
| Alkali resistance | 5 |
| Application | mainly used in offset ink, industrial paint and plastics |
| Color light | bright yellow |
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Item
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Specifications
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PbCrO4 Content %
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90.0 min
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Moisture %
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1.0 max
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Water soluble matter %
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1.0max
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Oil absorption %
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22g/100g max
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Tinting strength %
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95 min
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Hiding power g/m2
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55max
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Residue on 320 mesh %
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0.50 max
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Color(compared with standard)
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Approximate
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Colorant powder middle chrome yellow for coating
2. Good weatherability (Lightfastness, heat-resistant and alkali resistant)
3. Strong tinting power, excellent covering ability and fine dispersion.
4. We can supply iron oxide with different color, specifications and packin
5.we can do the specification as your application and requirment
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| Company Name | Beijing TDD E-commerce Co., Ltd | 国家 | China |
| 业务类型 | 在线商店 | 公司规模 | 2000 |
| 成立时间 | 2014年12月18日 | ||
| 地址 | Building No.3, Area 6, No.188, West of South Forth Ring Rd, Beijing, China | ||
| 主要产品 | Titanium dioxide, pigments, fillers, alcohols | ||
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