Useful for the determination of ESBO in foods with HPLC-MS or GC-MS. ESBO is currently employed as plasticizer and HCl scavenger in PVC products. Vegetable oils are widely used for chemical manipulation because of the high numbers of carbon-carbon double bonds. Through the epoxidation, an epoxide group (which is a more reactive group than a double bond) is added to the soybean oil, transforming it in a good hydrochloric acid scavenger and good plasticizer.