Technical Specification: Appearance Colorless liquid Tin content 19.00% at least Sulphur content 11.00-12.00% Color scale (Pt-Co)100# Density (20C,g/cm3) 1.17-1.19 Viscosity (25C,pa.s)0.020-0.080. Property: Methyl tin mercaptide is a high-efficiency heat stabilizer used in PVC processing. It imparts superior heat stability, transparency and weather resistance to PVC products than other organic tin stabilizers. It has excellent light resistance, heat resistance, processability and color stability, nontoxic and safe. Application: This product can be used for: (1). PVC calendering, transparent film.(2). PVC heat-shrinkable film, printed film. (3). PVC extruding sheet.(4). PVC profile and pipe. It has been approved by FDA and BGA (Germany) for use in food and medical/pharmaceutical packaging. N.W. 225Kg in plastic lined iron barrel or plastic drum. Kept in a dry ventilated place and avoid light. The expiration period is one year. It is non-flammable and non-explosive. Handle and transport in accordance with general regulations.