1. Product & Identification
Product Name: Eco-grade Submicron ZnO
Model: XRF-997
Chemical Formula: ZnO
CAS No.: 1314-13-2
Main Applications: Phosphating solutions, metal surface treatment, new energy batteries, rubber, electronic ceramics, enamel, inks, coatings, plastics, feed, pharmaceuticals.
2. Product Overview
This high-performance ZnO micropowder is produced from ultra-high purity (≥99.996%) electrolytic zinc sheets using an advanced indirect (French) process. It features very high purity (≥99.7%), extremely low heavy metals (Pb < 20ppm), uniform submicron particle size, and excellent reactivity. It is an ideal substitute for conventional ZnO, especially in demanding industrial fields with strict requirements for environmental safety and product consistency.
3. Key Technical Characteristics
3.1 Purity & Impurities
Parameter Specification
ZnO Content ≥ 99.7% (99.9% customizable)
Lead (Pb) < 20 ppm
Cadmium (Cd) < 0.001%
Residual Zn Metal < 0.01%
Insoluble matter (Hydrochloric Acid) ≤ 0.02%
Loss on ignition: ≤ 0.3%
Chloride (Cl⁻) ≤ 0.01%
Sulfate (SO₄²⁻) ≤ 0.02%
3.2 Physical Properties
Parameter Specification
Appearance White fine powder
Particle Size (D50) 0.6 ~1.2 μm (submicron)
Specific Surface Area (BET) 3 ~ 4.5 m²/g
Crystal Structure Hexagonal wurtzite
4. Phosphating Application Benefits
Feature Benefit
Zn²⁺ Supply Source Provides zinc ions for dense, uniform phosphate coating formation.
pH Buffer Stabilizes bath pH, extends bath life, inhibits Fe³⁺ accumulation.
Crystal Modifier Lattice matching (92%) guides oriented crystal growth for better adhesion.
Low Sludge Gradient release and high purity reduce phosphating sludge by up to 40%.
Recommended Process Parameters:
Parameter Range
Working Concentration 4 ~ 6 g/L
Temperature 35 ~ 45°C
Zn/P Molar Ratio 1.05 ± 0.03
Bath Circulation Rate ≥ 1.2 m/s
5. Cross-Industry Applications
Industry Function & Solution
Rubber High-efficiency vulcanization activator. Dosage: 3-5 phr.
Improves crosslinking density and mechanical properties.
Electronics Varistors, transparent conductive films (AZO/GZO), electroplating baths.
High purity ensures stable performance.
Coatings & Paints Anti-rust primer, antibacterial/antifungal coating, UV shielding agent.
Chemical Synthesis Raw material for zinc salts (stearate, borate) and PVC heat stabilizers.
Ceramics & Glass Flux, sintering aid, glaze improver.
Plastics & Cosmetics UV stabilizer, physical sunscreen agent, thermal filler.
Petroleum Raw material for ZDDP (lubricant anti-wear additive).
6. Quality Control Standards
Test Item Method Specification
ZnO Content ICP-OES (ISO 11885) ≥ 99.7%
Pb Content ICP-OES (RoHS) < 20 ppm
Cd Content ICP-OES (RoHS) < 0.001%
Acid Insoluble Gravimetric ≤ 0.02%
Loss on Ignition Gravimetric (950°C) ≤ 0.3%
Particle Size (D50) Laser Diffraction (ISO 13320) 0.8 ~ 1.2 μm
SSA (BET) N₂ Adsorption (ISO 9277) 3 ~ 5 m²/g
Residual Zn Metal XRD / Magnetic < 0.01%
7. Customer Value (vs. Conventional ZnO)
Parameter Conventional ZnO Our Product Customer Benefit
Residual Zn Metal ~0.1% < 0.01% 30% reduction in rework costs
Acid Dissolution Time ≥ 15 min ≤ 10 min ~40% energy savings
Phosphating Induction > 60 sec ≤ 30 sec ~15% production efficiency increase
Coating Pass Rate ~92% 98 ~ 99% ≥10% annual cost savings per line
8. Packaging & Storage
Packaging: 25 kg/bag, PE liner + woven outer bag. Custom packaging available.
Storage: Store in dry area; avoid moisture; keep away from strong acids/alkalis.
Transport: Non-hazardous chemical; protect from rain and damage.
9. Safety Information (Brief)
Hazards: Non-flammable, non-explosive. Mild irritant to eyes and respiratory tract.
PPE: Dust mask, safety glasses, chemical-resistant gloves.
First Aid: Eye contact – rinse with water for 15 min. Inhalation – get fresh air. Ingestion – rinse mouth, drink water, induce vomiting, seek medical attention.
10. Conclusion
Eco-grade Submicron ZnO represents the advanced level of modern high-performance functional materials. Based on top-grade raw materials and manufactured through precisely controlled processes, it has achieved comprehensive breakthroughs in purity, particle size, reactivity, and environmental friendliness. Whether in the core field of phosphating treatment or in a wide range of cross-industry applications such as rubber, electronics, high-end enamel, and coatings, this product provides customers with stable, reliable, and efficient solutions. It significantly enhances the quality and market competitiveness of end products while effectively reducing overall production costs and environmental burdens. As such, it is a strategic partner of choice for customers pursuing technological upgrading and sustainable development.
11. Disclaimer
The information provided is based on our current knowledge and experience. It is for reference only. Customers should conduct sufficient testing to ensure suitability for their specific processes.