HX AP-11 Modified aluminum & zinc phosphate
Anti-rust pigment
Technical Information
What Is HX AP-11 Modified Aluminum & Zinc Phosphate
HX AP-11 is a white, non-toxic anti-corrosion pigment based on modified aluminum zinc phosphate chemistry. Designed as a drop-in replacement for traditional zinc phosphate in metal protective coatings, it delivers effective corrosion inhibition through phosphate ion-exchange and substrate passivation mechanisms. With an optimized oil absorption range of 13-28 g/100g — lower than standard grades — HX AP-11 allows high pigment loading and excellent film integrity in both solvent-based and waterborne systems. Its controlled particle size distribution (D50: 2.0-6.0 μm) ensures smooth film surfaces in thin-coat applications.
Key Features
- Low Oil Absorption (13-28 g/100g) — Enables high PVC loading without viscosity penalty, ideal for high-solids and low-VOC formulations
- Environmentally Compliant — Zinc-modified but non-toxic formulation meeting global eco-label requirements for anti-corrosion pigments
- Broad System Compatibility — Performs reliably in solvent-based alkyds, waterborne acrylics, and epoxy coatings
- Controlled Fine Particle Size — D50: 2.0-6.0 μm with sieve residue <1.0% on 45 μm, suitable for thin-film industrial coatings
- Neutral pH Range (6.0-9.0) — Compatible with pH-sensitive binders and reactive systems
- Cost-Effective Performance — Provides zinc phosphate-level corrosion protection at competitive pricing for mid-tier industrial applications
Recommended Applications
| Application | Suitability |
|---|---|
| Industrial Paints | ✅ Recommended |
| Decorative Water Base Paints | ✅ Recommended |
| Decorative Solvent Base Paints | ✅ Recommended |
| Decorative Universal Stainers | ✅ Recommended |
| Powder Coatings | ⚪ Suitable |
| Automotive OEM | ❌ Not Recommended |
| Automotive Refinish | ❌ Not Recommended |
✅ Recommended | ⚪ Suitable | ❌ Not Recommended
Technical Data
| Physical Form | White powder |
| Oil Absorption | 13-28 g/100g |
| Water Soluble Matter | < 1.5% |
| pH Value | 6.0-9.0 |
| Sieve Residue (45 μm) | < 1.0% |
| Primary Particle Size D50 | 2.0-6.0 μm |
Packaging
25 kg/bag. Custom packaging available upon request.
Frequently Asked Questions
What is the difference between HX AP-11 and HX AP-10?
HX AP-10 is magnesium-modified with higher oil absorption (30-40) and finer particle size (D50 1.0-5.0), optimized for waterborne epoxy systems requiring maximum water resistance. HX AP-11 offers lower oil absorption (13-28), a wider pH tolerance (6.0-9.0), and slightly coarser particles (D50 2.0-6.0) — making it the preferred choice for solvent-based industrial paints and high-PVC formulations where cost-performance balance is critical.
Can HX AP-11 replace zinc phosphate directly?
Yes, in most solvent-based alkyd and waterborne acrylic systems. HX AP-11 is designed as a near drop-in replacement. Its lower oil absorption (13-28 vs. zinc phosphate’s 15-25) means formulation adjustments are minimal. We recommend a 1:1 volume replacement as a starting point and adjusting PVC based on your specific corrosion resistance requirements.
Is HX AP-11 suitable for thin-film applications?
Yes. The controlled particle size distribution (D50: 2.0-6.0 μm, sieve residue <1.0% on 45 μm) ensures excellent film smoothness even in coatings applied at 20-30 μm dry film thickness. This makes HX AP-11 well-suited for general industrial and light industrial maintenance coatings where surface appearance matters.
What regulatory certifications does HX AP-11 meet?
HX AP-11 complies with major environmental regulations for heavy-metal-free anti-corrosion pigments. REACH, RoHS, and specific compliance documentation are available upon request.
Disclaimer — This Technical Data Sheet reflects our best understanding of typical product properties at the time of publication. Listed values are representative of standard production and are not intended as specifications, contractual parameters, or fitness guarantees. Batch variations within normal manufacturing tolerances may occur; users should verify critical parameters against their own requirements before use. Processing methods, formulations, and end-use environments are beyond the manufacturer’s control. The buyer assumes full responsibility for confirming product suitability through its own testing and quality assurance. No intellectual property license is granted or implied. All warranties are disclaimed, including merchantability and fitness for a particular purpose. The manufacturer is not liable for incidental, consequential, or special damages. All sales are governed by the manufacturer’s standard terms, available upon request. This product may contain particles below 0.1 μm.