High-Purity Zinc Phosphate – Anti-Corrosive & Protective Pigment for Industrial Coatings and Surface Treatments

Zinc Phosphate (Zn₃(PO₄)₂) is a versatile inorganic compound widely used as an anti-corrosive pigment, surface treatment agent, and functional additive in coatings, paints, primers, and industrial formulations. Known for its superior adhesion, chemical stability, and corrosion resistance, Zinc Phosphate is an essential material for extending the durability and performance of metal surfaces in automotive, construction, and marine applications.

In industrial coatings, Zinc Phosphate is primarily used as a corrosion-inhibiting pigment. It forms a protective layer on metal surfaces, preventing oxidation and rust formation even in harsh environmental conditions. When incorporated into primers, paints, and powder coatings, it enhances adhesion, improves paint film durability, and provides long-term protection for steel, aluminum, and other metal substrates.

In the construction and infrastructure sector, Zinc Phosphate-containing coatings are applied to structural steel, bridges, pipelines, and machinery to extend service life and reduce maintenance costs. Its anti-corrosive properties make it an ideal choice for industrial environments with high humidity, chemical exposure, or saltwater conditions.

In automotive and marine applications, Zinc Phosphate serves as a key component in primers and surface coatings. It improves paint adhesion, prevents blistering, and provides a stable base layer for topcoat application. This ensures high-quality finishes that resist chipping, peeling, and corrosion over time.

Zinc Phosphate is also used in chemical and specialty applications, such as in ceramic formulations, electronics, and as a corrosion inhibitor in water treatment systems. Its inert, non-toxic properties (in industrial-grade formulations) allow for safe integration into multiple industrial processes.

Typical Technical Specifications (Industrial Grade):

• Chemical Formula: Zn₃(PO₄)₂
• Appearance: Fine white to off-white powder
• Purity: ≥ 98%
• Particle Size: 5–20 microns (typical, can vary by grade)
• Solubility: Insoluble in water, soluble in acids
• Moisture Content: ≤ 1%
• pH (suspension in water): 6–8

Key Benefits of Zinc Phosphate:

• Excellent corrosion inhibition for metal surfaces
• Enhances paint adhesion and film durability
• Compatible with primers, paints, and coatings
• Stable, non-toxic, and environmentally safe (when formulated correctly)
• Reduces maintenance costs and extends service life of metal structures
• Versatile across automotive, marine, industrial, and construction applications

Zinc Phosphate should be stored in a dry, ventilated area, away from moisture and contaminants, to preserve its chemical stability and particle properties. It is typically supplied in bulk powder form for industrial use or as pre-dispersed slurries for coating formulations.

Its multifunctional properties, reliability, and proven performance make Zinc Phosphate a critical material for protecting metal surfaces against corrosion, enhancing coating quality, and ensuring long-term durability in industrial, automotive, and construction sectors worldwide.

High-Purity Zinc Phosphate

Anti-Corrosive & Protective Pigment for Industrial Coatings and Surface Treatments

High-purity zinc phosphate is a high‑performance anti‑corrosive pigment widely used in protective coatings and surface treatment applications. It provides excellent corrosion resistance, strong adhesion, and long‑lasting protection for metal substrates across industrial environments.

Key Features

• High purity and stable chemical structure

• Superior anti‑corrosion performance

• Enhances coating durability and adhesion

• Compatible with a wide range of resin systems

• Ideal for primers, industrial coatings, and metal treatments

Applications

• Industrial anti‑corrosion coatings

• Heavy‑duty protective paint systems

• Metal surface treatment formulations

• Marine, automotive, and structural steel protection

• Powder coatings and solvent‑based coatings