Lead Stabilizer is a traditional heat stabilizer used mainly in rigid PVC processing. It provides excellent thermal resistance, long-term stability, and cost-effective processing performance.
Although not suitable for food contact or environmentally regulated applications (e.g., EU export), lead stabilizers are still preferred in many infrastructure, cable, and construction products due to their reliable performance under heat and pressure.
| Property | Value |
|---|---|
| Physical Form | White powder |
| Lead Content | ~20–30% (varies by formulation) |
| Melting Point | >200°C |
| Recommended Dosage | 3.0 – 6.0 phr |
| Processing Window | 170°C – 230°C |
| Compatibility | Rigid PVC, filled compounds |
| Shelf Life | 12–24 months |
| Problem | Solution with Lead Stabilizer |
|---|---|
| PVC warps or discolors at high temp | Excellent thermal and dimensional stability |
| Need cost-effective compound for domestic market | Lead system offers low cost & efficiency |
| Cannot afford plate-out in tooling | Lead stabilizers show low plate-out behavior |
| Need stable extrusion for thick profiles | Performs well in high-speed, high-pressure |
Q1: Why choose lead stabilizer if it’s restricted in some markets?
Because it’s still legally used in many domestic markets for non-contact, non-export PVC products like pipes and construction profiles.
Q2: Is it cheaper than other types?
Yes. Lead stabilizer offers excellent cost-performance in high-volume production.
Q3: What happens if I export products made with it?
You may face compliance issues, fines, or customs rejection. Always confirm regulations in your target country.
Q4: Does it cause plate-out or poor flow?
No. Lead stabilizers are known for smooth flow and low deposit on extrusion lines.
Q5: Can you provide a transition plan to lead-free?
Yes. We offer Ca-Zn based systems to replace lead in compatible applications.
