Table 4 Physical properties of the prepared DESs
|  | pH | Density (g/cm3) | Viscosity (ƒ in Pas) | Conductivity (µS/cm) | Water activity |
|---|---|---|---|---|---|
DES 1 | 7.67 ± 0.05 | 1.10 ± 0.01 | 0.01 ± 0.00 | 19.59 ± 0.06 | 0.7351 ± 0.00 |
DES 2 | 7.41 ± 0.10 | 1.05 ± 0.01 | 0.03 ± 0.01 | 6.30 ± 0.00 | 0.8435 ± 0.01 |
DES 3 | 0.97 ± 0.03 | 1.09 ± 0.00 | 0.01 ± 0.00 | 17.15 ± 0.56 | 0.6167 ± 0.00 |
DES 4 | 4.95 ± 0.47 | 1.19 ± 0.02 | 0.04 ± 0.00 | 7.80 ± 0.47 | 0.4151 ± 0.02 |
DES 5 | 5.17 ± 0.36 | 1.28 ± 0.01 | 0.13 ± 0.01 | 2.71 ± 0.53 | 0.6250 ± 0.00 |
DES 6 | 1.21 ± 0.00 | 1.23 ± 0.00 | 0.07 ± 0.03 | 3.21 ± 0.40 | 0.4669 ± 0.00 |
DES 7 | 2.11 ± 0.04 | 1.29 ± 0.02 | 0.16 ± 0.00 | 12.82 ± 0.78 | 0.7777 ± 0.00 |
DES 8 | 1.18 ± 0.03 | 1.32 ± 0.02 | 0.99 ± 0.01 | 19.08 ± 0.00 | 0.5693 ± 0.00 |
DES 9 | 5.35 ± 0.50 | 1.14 ± 0.00 | 0.01 ± 0.00 | 10.06 ± 0.00 | 0.5749 ± 0.00 |
DES 10 | 2.87 ± 0.01 | 1.29 ± 0.01 | 0.26 ± 0.09 | 10.07 ± 0.00 | 0.5337 ± 0.00 |