Gas-phase rate constants of organic compounds in the atmosphere reacting with ˙OH and O3 at 298 K (ref. 89).
| Rate constant (k, cm3 per molecule per s) | ||
|---|---|---|
| Species | OH | O3 |
| Alkanes | (×10−12) | |
| Methane | 0.00618 | |
| Ethane | 0.254 | |
| Propane | 1.12 | |
| 2-Methylbutane | 3.7 | |
| 2,3-Dimethylbutane | 5.8 | |
| Alkenes | (×10−12) | (×10−18) |
| Isoprene | 101 | 12.8 |
| α-Terpinene | 363 | 21 000 |
| 1,3-Butadiene | 66.6 | 6.3 |
| Methyl vinyl ketone | 18.8 | 5.6 |
| Methacrolein | 33.5 | 1.2 |
| 2-Methyl-2-butene | 86.9 | 403 |
| Aromatics | (×10−12) | |
| Benzene | 1.2 | |
| Toluene | 6.0 | |
| Ethylbenzene | 7.1 | |
| n-Propylbenzene | 6.0 | |
| Others | (×10−13) | |
| Acetone | 2.2 | |
| Propionic acid | 12 | |
| Dimethyl ether | 30 | |