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Properties comparison of evening primrose oil, epoxidized oil, and biopolyol.
| Parameter | EPO | EPEO | EPB |
|---|---|---|---|
| Smell | earthy | earthy | earthy |
| Iodine value (mol I2/100 g of fat) | 0.658 | 0.386 | 0.386 |
| Epoxy value (mol/100 g of fat) | 0.000 | 0.253 | 0.000 |
| Acid value (mg KOH/g) | 8.720 | - | 0.840 |
| Hydroxyl number (mg KOH/g) | 8.720 | - | 182.410 |
| Viscosity (mPa·s) | 170 | 190 | 2400 |
| Water content (wt.%) | 0 | 0.6 | <0.2 |
| pH (-) | 6.5 | 7.0 | 7.0 |
| Molecular weight (g/mol) | 820 | 917 | 1623 |
