The English name of epoxidized soybean oil, ESO for short, has the chemical formula (RC2H2OR'COO)3C3H5, and is a light yellow viscous oily liquid at room temperature. Non-toxic. The boiling point is 150°C (0.53 kPa). Soluble in most organic solvents and hydrocarbons, but insoluble in water. It has excellent heat resistance, light resistance and compatibility. Commonly used in PVC products as plasticizers, especially suitable for PVC transparent products, food packaging products and other non-toxic products.