Plas-Chek® epoxidized soybean oil and Lankroflex epoxidized linseed oil are secondary heat stabilizers that are used in a wide variety of flexible and rigid PVC formulations. Plas-Chek® ESO and LankroflexELO are  also efficient plasticizers and can be used to replace general purpose plasticizers. Epoxidized soybean oil and epoxidized linseed oil are approved for use in indirect food contact applications and are also Kosher certified.