1. High-Efficiency High-Transparency Stabilizer | Methyl Tin Stabilizer

                       (Methyl Mercaptan Tin) Product Overview

📝 Product Overview

Methyl Tin Stabilizer (technically known as Methyl Tin Mercaptide or Methyl Mercaptan Tin) is widely recognized as the most effective heat stabilizer for polyvinyl chloride (PVC) processing. With CAS numbers primarily associated as 57583-35-4 and 57583-34-3, it is a high-performance organotin compound.

It is celebrated for its unmatched thermal stability and exceptional transparency. Unlike other stabilizers, Methyl Tin provides excellent initial color and long-term stability at high processing temperatures. It is the industry gold standard for transparent PVC applications, food-contact materials, and high-speed extrusion lines where thermal degradation must be strictly avoided.

🔬 Key Specifications

• Appearance：Colorless to pale yellow clear oily liquid
• Tin Content (%)：19.0% ± 0.5% (Standard)
• Color (APHA)：≤30
• Viscosity (25°C, mPa·s)：20 - 50
• Specific Gravity (20°C, g/cm³)：1.170 - 1.190
• Sulfur Content (%)：11.5% - 12.5%

🚀 Application Areas

Methyl Tin Stabilizer is the preferred choice for high-end PVC products that demand crystal-clear optics and extreme heat resistance.

①  PVC Transparent Films & Packaging:Used extensively in calendered and blown films for food packaging (shrink film, twist film). Its high transparency and food-grade safety compliance make it essential for displays and protective wraps. Recommended dosage: 0.8 - 1.5 phr (parts per hundred resin).

② Rigid Transparent Sheets: Ideal for thermoforming sheets, signage, and credit card substrates. It ensures the sheets remain perfectly clear without yellowing, even when subjected to multiple heat cycles during processing.

③High-Speed PVC Piping & Fittings:In high-pressure water pipes and injection-molded fittings, Methyl Tin provides a wide processing window. It allows for higher extrusion speeds and prevents "burning" or degradation in the extruder's dead zones.

④PVC Bottles & Containers: Used in the production of transparent bottles for beverages, cosmetics, and household chemicals. It imparts a high-gloss surface and excellent impact strength to the finished container.

⑤ Medical Grade PVC Applications: Because it can meet stringent non-toxic requirements, it is used in certain medical tubing and devices where clarity and thermal stability during sterilization are required.

⑥WPC and Construction Profiles: In high-quality wood-plastic composites (WPC) and door/window profiles, it provides the necessary heat resistance to handle complex cross-sections and heavy filler loads.

📦 Packaging and Storage

• Packaging: Typically supplied in 200 kg or 220 kg plastic drums, or 1,000 kg / 1,200 kg IBC tanks.
• Storage: Store in a cool, dry place. Keep containers tightly closed after use to prevent oxidation and moisture absorption. Avoid contact with iron or steel for prolonged periods to prevent discoloration.
• Shelf Life: 12 months under original sealed conditions.