Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (02): 309-313.doi: 10.3866/PKU.WHXB20090219

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Thermal Behavior, Specific Heat Capacity and Adiabatic Time-to-Explosion of 3,6-Dihydrazino-1,2,4,5-tetrazine

XU Kang-Zhen; ZHAO Feng-Qi; REN Ying-Hui; MA Hai-Xia; SONG Ji-Rong; HU Rong-Zu   

  1. Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China; College of Chemical Engineering, Northwest University, Xi’an 710069, P. R. China; 3Conservation Technology Department, the Palace Museum, Beijing 100009, P. R. China
  • Received:2008-08-28 Revised:2008-10-20 Published:2009-01-16
  • Contact: ZHAO Feng-Qi E-mail:npecc@163.com

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Abstract: Thermal behavior of 3,6-dihydrazino-1,2,4,5-tetrazine (DHT) was studied by differential scanning calorimetry (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG), and the decomposition process can be divided into two exothermic decomposition stages. Values of the apparent activation energy (E) and pre-exponential constant (A) of the two exothermic decomposition stages are 154.8 and 123.4 kJ·mol-1, 1016.63 and 109.48 s-1, respectively. The critical temperature of thermal explosion is 426.10 K. The specific heat capacity of DHT was determined by the micro-DSC method and theoretical calculation method. The standard molar specific heat capacity was found to be 183.61 J·mol-1·K-1 at 298.15 K. The adiabatic time-to-explosion of DHT was calculated to be a certain value between 263.84 s and 297.58 s.

Key words: 3,6-Dihydrazino-1,2,4,5-tetrazine, Thermal behavior, Specific heat capacity, Adiabatic time-to-explosion

MSC2000: 

  • O642