Zinc Phosphate — CAS 7779-90-0

Description

1. Product Overview

Zinc Phosphate (CAS 7779-90-0) is a high-performance, non-toxic anti-corrosive pigment widely used in protective coatings and industrial paint systems. It functions as an advanced corrosion inhibitor, forming a stable passive film on metal substrates and significantly extending coating lifespan. The product is a strategic raw material in the global coatings, automotive, marine, and heavy equipment industries due to its balance of performance, safety, and environmental compliance. Its growing adoption is driven by the shift away from heavy-metal-based corrosion inhibitors toward sustainable alternatives. Zinc Phosphate delivers long-term substrate protection, making it a critical input for high-durability industrial formulations.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Zinc phosphate (Zn₃(PO₄)₂)
• CAS Number: 7779-90-0
• Purity / Grade: Industrial grade (≥ 98% typical, customizable upon request)
• Physical Form: Fine powder
• Color: White to off-white
• Particle Size: Micronized grades available (customizable D50 range)
• Density: ~3.2–3.6 g/cm³ (approx.)
• Oil Absorption: Moderate to high, suitable for coating dispersion systems
• Packaging Options: 25 kg bags / 500 kg jumbo bags / customized bulk packaging
• Shelf Life: 24 months under dry, cool storage conditions

3. Core Industrial Applications

Zinc Phosphate is extensively used across high-value industrial sectors as a corrosion-inhibiting pigment.

• Protective Coatings & Paints: Anti-corrosion primers for steel structures, bridges, pipelines, and industrial machinery
• Marine & Offshore Systems: Coatings for saltwater-exposed equipment and shipbuilding applications
• Automotive Industry: OEM primers and underbody protective coatings
• Industrial Equipment: Heavy-duty machinery requiring long-term oxidation resistance
• Construction Materials: Structural steel protection in harsh environmental conditions

Its superior performance lies in its ability to chemically passivate metal surfaces, reducing corrosion rates more effectively than conventional fillers while maintaining coating integrity and adhesion.

4. Competitive Advantages

• High Anti-Corrosion Efficiency: Strong passivation effect for extended metal protection cycles
• Eco-Friendly Alternative: Low toxicity and compliant with modern environmental regulations replacing lead/chromate-based pigments
• Stable Quality Consistency: Tight particle size control ensures uniform dispersion in formulations
• Strong Supply Reliability: Scalable production capacity for global industrial demand
• Cost-Effective Performance: Optimized dosage requirements reduce total formulation cost
• Technical Documentation Support: Full COA, MSDS, and formulation guidance available for industrial clients
• Global Logistics Capability: Efficient bulk shipping solutions for international procurement chains

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 MT (Bulk Supply)
• Loading Capacity: 20–25 MT per 20ft container (depending on packaging configuration and destination regulations)
• Supply Format: Bulk export shipments with flexible contract-based scaling
• Lead Time: Standard industrial dispatch schedule available upon order confirmation
• Export Readiness: Full documentation support for international trade compliance and customs clearance