Epoxidized Soybean Oil (ESO or ESBO) is a bio-based, non-toxic plasticizer and stabilizer derived from soybean oil. It contains epoxy groups that provide thermal and UV stability, making it ideal for PVC and plastic formulations. It is a preferred choice for green, eco-friendly products.
| Property | Typical Value |
|---|---|
| CAS No. | 8013-07-8 |
| Appearance | Pale yellow to light brown oily liquid |
| Oxirane Oxygen | ≥ 6.0% |
| Iodine Value | ≤ 3.0 g I2/100g |
| Acid Value | ≤ 1.0 mg KOH/g |
| Moisture | ≤ 0.2% |
| Density (25 °C) | 0.99 g/cm³ |
| Challenge | ESO Solution |
|---|---|
| Seeking non-phthalate alternatives | ESO is phthalate-free and bio-based |
| Need dual-function additive (plasticizer + stabilizer) | ESO offers both roles in one |
| Concern about regulatory compliance | ESO meets food contact standards in many countries |
| Reduce VOCs and odor | ESO has low volatility and mild odor |
Q1: Is ESO compatible with traditional plasticizers?
Yes, ESO blends well with DOP, DINP, DOTP, and others.
Q2: Is ESO suitable for 100% bio-plastic formulations?
ESO is bio-based, but usually used in combination with other plasticizers in formulations.
Q3: Does ESO affect mechanical properties?
It enhances flexibility and improves thermal stability without sacrificing strength.
