| Log K1 | Log K2 | Solvent | Method | Reference |
| 4.86 | 1.5 | Aqueous | potentiometric | [19] |
| 5.00 | -- | Dioxan-water (10%) | potentiometric | [20] |
| 4.97 | -- | Glycol-water (10%) | potentiometric | [21] |
| 4.93 | 1.29 | Aqueous | Potentiometric | Present study |
| 4.84 | 0.89 | TBAB (ionic micellar) | Potentiometric | Present study |
| 4.89 | 1.02 | PEG-400 (non-ionic micellar) | Potentiometric | Present study |