| Reaction condition, (No. of H2S moles) | k1* | k2* | k3* | k4* |
| No H2S | 11.5 × 10−4 | 11.8 × 10−4 | 3.2 × 10−4 | 98.3 × 10−4 |
| ≤5 × 10−4 | 5.0 × 10−4 | 75.0 × 10−4 |
|
|
| 17 × 10−4 | 5.1 × 10−4 | 75.1 × 10−4 | 15.2 × 10−4 | 240.3 × 10−4 |
| 23 × 10−4 | 4.8 × 10−4 | 75.0 × 10−4 | 18 × 10−4 | 236 × 10−4 |
| 50 × 10−4 | 4.5 × 10−4 | 75.5 × 10−4 | 17 × 10−4 | 233 × 10−4 |