Anti-corrosion Pigment — Zinc Phosphate

Description

1. Product Overview
Zinc Phosphate Anti-corrosion Pigment is a high-performance, non-toxic corrosion-inhibiting additive widely used in protective coating systems. It functions as an active barrier pigment that passivates metal surfaces, significantly reducing rust formation and extending asset lifespan in harsh environments. The product is engineered for use in industrial primers, marine coatings, and heavy-duty protective paints where long-term durability is critical. Its strategic value lies in its ability to replace traditional toxic anti-corrosives while maintaining superior performance and regulatory compliance across global markets.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Zinc phosphate (Zn₃(PO₄)₂·xH₂O)
• Purity/Grade: High-purity industrial coating grade (≥ 98% typical)
• Physical Form: Fine powder
• Color: White to off-white
• Particle Size: Micronized grade (typically 2–10 µm, customizable)
• Density: Approx. 3.0–3.6 g/cm³
• Oil Absorption: Moderate to high, suitable for resin systems
• Packaging: 25 kg multi-layer bags or 500–1000 kg jumbo bags
• Shelf Life: 24–36 months under dry, sealed storage conditions

3. Core Industrial Applications
Zinc phosphate is extensively used in anti-corrosion primer formulations across marine, automotive, construction, and industrial equipment sectors. It is applied in epoxy, alkyd, polyurethane, and acrylic coating systems to provide long-term substrate protection. The pigment works by forming an insoluble protective layer on metal surfaces, preventing electrochemical corrosion. Compared to chromate-based inhibitors, it offers a safer, environmentally compliant alternative with strong performance stability and reduced regulatory burden.

4. Competitive Advantages

• High Performance Corrosion Resistance: Excellent long-term protection under humidity, salt spray, and chemical exposure
• Regulatory Compliance: Heavy-metal-free alternative to toxic chromates
• Formulation Flexibility: Compatible with multiple resin systems and coating technologies
• Stable Supply Chain: Consistent particle quality and scalable bulk production capability
• Cost Efficiency: Optimized dosage requirements reduce total formulation cost
• Environmental Profile: Low toxicity and improved sustainability credentials for modern coatings
• Technical Support: Full documentation including TDS, SDS, and formulation guidance available

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: Approximately 20–22 MT per 20-foot container (depending on packaging type and palletization)