| T/K | pKa | σ (pKa)a | β | σ (β)b |
| 278.15 | 6.8352 | 0.0006 | 0.145 | 0.021 |
| 283.15 | 6.7430 | 0.0006 | 0.142 | 0.020 |
| 288.15 | 6.6536 | 0.0006 | 0.138 | 0.021 |
| 293.15 | 6.5671 | 0.0006 | 0.134 | 0.021 |
| 298.15 | 6.4828 | 0.0005 | 0.130 | 0.019 |
| 303.15 | 6.4011 | 0.0006 | 0.136 | 0.020 |
| 308.15 | 6.3214 | 0.0006 | 0.143 | 0.020 |
| 310.15 | 6.2906 | 0.0006 | 0.148 | 0.020 |
| 313.15 | 6.2443 | 0.0005 | 0.155 | 0.020 |
| 318.15 | 6.1683 | 0.0005 | 0.162 | 0.019 |
| 323.15 | 6.0942 | 0.0006 | 0.163 | 0.020 |
| 328.15 | 6.0214 | 0.0006 | 0.170 | 0.020 |