| Reaction temperature (˚C) | Color | Reaction time (h) | Yield (%) |
| 90 | White | 4.0 | 22.1 |
| 95 | White | 4.0 | 30.5 |
| 100 | White | 4.0 | 65.0 |
| 105 | Faint yellow | 4.0 | 98.0 |
| 110 | Faint yellow | 4.0 | 98.1 |
| 115 | Faint yellow | 4.0 | 98.4 |
| 120 | Orange-yellow | 3.0 | 98.0 |
| 125 | Black | 2.5 | 95.3 |
| 135 | Black | 2.5 | 93.0 |