Table 1.
The equilibrium solubility of MSKE in the tested solvents at 25 ± 1 °C.
| No. | Solvents | Equilibrium Solubility a,b (mg/g) |
|---|---|---|
| 1. | IPM | 0.00 ± 0.00 |
| 2. | Water | 26.41 ± 1.60 |
| 3. | PSM | 5.27 ± 1.83 |
| 4. | SM | 0.02 ± 0.00 |
| 5. | Mixture of PSM and SM (1:1, by weight) | 1.44 ± 0.70 |
| 6. | Absolute EtOH | 1.81 ± 0.31 |
| 7. | 96.3% EtOH | 5.13 ± 0.98 |
| 8. | 1-PA | 0.69 ± 0.21 |
| 9. | 2-PA | 24.98 ± 1.50 |
| 10. | 1,2-PA | 13.22 ± 2.54 |
| 11. | Mixture of water and Absolute EtOH (1:1, by weight) | 26.87 ± 1.16 |
| 12. | Mixture of water and 96.3% EtOH (1:1, by weight) | 24.22 ± 2.79 |
| 13. | Mixture of water and 1-PA (1:1, by weight) | 26.39 ± 2.32 |
| 14. | Mixture of water and 2-PA (1:1, by weight) | 23.39 ± 1.19 |
| 15. | Mixture of water and 1,2-PA (1:1, by weight) | 21.58 ± 4.18 |
IPM = isopropyl myristate, PSM = polyoxyethylene sorbitan monooleate, SM = sorbitan monododecanoate, EtOH = ethanol, 1-PA = 1-propanol, 2-PA = 2-propanol, 1,2-PA = 1,2-propanediol; a The values are expressed as the mean ± SD (n = 3); b The equilibrium solubility of MSKE in the tested solvents was calculated from the content analysis of PGG in MSKE.