Calcium-zinc (Ca/Zn) stabilizers continue to gain market share due to their environmental profile and cost advantages. However, for high-transparency, high-temperature, or long-run PVC applications, methyl tin stabilizers remain unmatched.
Choose Ca/Zn when: Processing opaque products (pipes, profiles, floor coverings), cost is the primary driver, and high transparency is not required.
Choose Methyl Tin when: You need crystal-clear products (clear sheet, transparent bottles, packaging film), food/medical contact compliance is required, or long extrusion runs demand consistent color hold.
Unistars offers both worlds: Our antimony-based stabilizers (PWX-3A, NT-201) provide a cost-effective middle ground for rigid PVC applications where full methyl tin performance is not needed. Talk to our technical team about the optimal stabilizer for your product.