EFAME has a smaller molecular weight and better flowability, typically providing faster plasticization and better low-temperature flexibility in PVC, while ESBO is more commonly used for auxiliary stabilization and supplemental plasticization.

EFAME offers environmental benefits, low odor, and excellent cold resistance, but its migration resistance, extraction resistance, and long-term mechanical stability are generally lower than those of primary plasticizers such as DOTP, TOTM, and DINCH. Therefore, EFAME is more suitable for use as an auxiliary plasticizer or stabilizer, blended with primary plasticizers to balance processability, flexibility, and thermal stability.

EFAME has a relatively low molecular weight, making it more prone to migration, volatilization, or exudation under high loading levels or prolonged high-temperature use, especially in highly filled PVC and low-polarity systems. In practical applications, the dosage is usually controlled and EFAME is blended with TOTM, DOTP, polyester plasticizers, or stabilizers to balance flexibility, processability, and durability.

EFAME is derived from long-chain fatty acids and has a more flexible molecular structure. It maintains better chain mobility at low temperatures, helping PVC retain softness and resistance to brittle cracking for cold-resistant applications.

EFAME usage is increasing in eco-friendly PVC formulations because stricter restrictions on phthalates are driving demand for low-odor, low-VOC, and renewable-source materials. EFAME offers plant-based content, light odor, and lower heavy-metal risk, and can partially replace traditional epoxidized soybean oil, supporting its growing application in environmentally friendly PVC.