Calcium-Zinc Stabilizer is an environmentally safe, lead-free heat stabilizer made from calcium and zinc compounds. It is widely used in PVC production as a safer alternative to traditional lead-based stabilizers. It ensures thermal protection, UV resistance, and processing stability across a wide range of applications.
Unlike older stabilizers, it does not contain heavy metals, making it the top choice for medical, children’s products, and export goods that must meet RoHS, REACH, and other global standards.
| Problem | Solution Provided by Ca-Zn Stabilizer |
|---|---|
| PVC turns yellow during extrusion | Provides strong color retention under heat |
| Product deforms or cracks after exposure to sun | Offers UV and weather resistance |
| Lead stabilizer banned or restricted in export markets | Fully lead-free and compliant |
| Bad smell during processing | Low odor formula, improves working environment |
| Weak early color in high-speed production | Improves initial color and brightness |
| Property | Value |
|---|---|
| Physical Form | White powder or granules |
| Main Components | Calcium and Zinc organic salts |
| Recommended Dosage | 2.5 – 5 phr (depends on resin) |
| Heavy Metal Content | 0 (lead-free, cadmium-free) |
| Processing Temperature | Up to 200–220°C |
| Compatibility | With most PVC formulations |
| Feature | Calcium-Zinc | Lead-Based |
|---|---|---|
| Environmental Safety | ✅ Yes | ❌ No |
| Export Compliance | ✅ Global | ⚠️ Restricted in EU/US |
| Initial Color | ✅ Excellent | ✅ Good |
| Long-Term Stability | ✅ Strong | ✅ Strong |
| Toxicity Risk | ❌ None | ⚠️ High |
