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Transformation and Stability of N-Nitrodiethanolamine Dinitrate Nitration Liquid System under Thermal and Mechanical
Jing Zhou1, Li Ding1, Xiaofeng Wang1
1State Key Laboratory of Fluorine & Nitrogen Chemicals Xi'an Modern Chemistry Research Institute Xi'an, Shanxi 710065 China.
Abstract:
To obtain a deeper understanding of the process involved in the synthesis of N-nitrodiethanolamine dinitrate (DINA), in this work we carried out systematic studies on the transformation and stability of the N-nitration liquid and DINA. The thermal decomposition processes and dynamic characteristics for both the N-nitration liquid and DINA were carried out by thermal analysis methods and the mechanism for the decrease of stability of the N-nitration liquid was proposed according to experimental results. Mechanical stimulation of the N-nitration liquid and DINA were also studied by friction and impact sensitivity testing. The experimental results showed that the N-nitration liquid is highly sensitive to temperature and can decompose easily when the reaction temperature increases. However, mechanical sensitivity of the N-nitration was demonstrated to be much lower than that of DINA. Therefore, precise thermal control is the key factor to ensure safety during the preparation of DINA.
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