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Citation: LI Gao-Liang, HE Hui. Reaction Kinetics Between Nitrous Acid and N,N-Dimethylhydroxylamine[J]. Chinese Journal of Applied Chemistry, ;2010, 27(8): 916-923. doi: 10.3724/SP.J.1095.2010.90543 shu

Reaction Kinetics Between Nitrous Acid and N,N-Dimethylhydroxylamine

LI Gao-Liang ,
HE Hui

Radiochemistry Department of China Institute of Atomic Energy, Beijing 102413

Received Date: 20 August 2009
Revised Date: 15 January 2010

The oxidation of N,N-dimethylhydroxylamine(DMHAN) by nitrous acid in a perchloric acid and nitric acid medium as well as the effects of c (H⁺),c (DMHAN),ion strength and temperature on the reaction were studied. The rate equation in perchloric acid was determined as follows:-d[HNO₂]/dt=k[DMHAN] [HNO₂],where k=(12.8 ± 1.0) mol/(L·min) when the temperature is 18.5℃ and the ion strength is 0.73 mol/L with an activation energy about of 41.5 kJ/mol. The reaction became complicated when it was performed in nitric acid medium. The reaction between nitric acid and DMHAN occurred and nitrous acid was produced when the concentration of nitric acid was higher than 1.0 mol/L. The reaction products were analyzed and the reaction mechanism was discussed.
- N,N-dimethylhydroxylamine,
- reaction kinetics,
- reaction mechanism,
- nitrous acid
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