Base-catalyzed hydrolysis of 1,2,2-trimethylpropyl methylphosphonofluoridate—An examination of the saturation effect

The kinetics of the hydrolysis of 1,2-2-trimethylpropyl methylphosphonofluoridate (soman) was measured from 1 to 80 × 10−5 m hydroxide-ion concentration. No apparent “saturation effect” could be positively identified such as was reported by Martell for the hydrolysis of isopropyl methylphosphonofluoridate (sarin). The second-order rate coefficient for soman was 10.0 ± 0.03 m −1 s−1 at 25.0°C over this pH range.