Thermal behavior and thermal safety of 6b-nitrohexahydro-2H-1,3,5-trioxacyclopenta[cd]-pentalene-2,4,6-triyltrinitrate

6b-Nitrohexahydro-2H-1,3,5-trioxacyclopenta[cd]-pentalene-2,4,6-triyltrinitrate (NHTPN) is an energetic compound with interesting properties. Its thermal and kinetic behaviors were studied by differential scanning calorimetry (DSC), and its specific heat capacity (Cp) was determined by a continuous Cp mode of microcalorimetry (Micro-DSC III). In order to evaluate its thermal safety, the values (Te0 and Tp0) of Te and Tp corresponding to β → 0, critical temperature of thermal explosion (Tbe and Tbp), adiabatic time-to-explosion (tTIad), 50% drop height (H50) of impact sensitivity, critical temperature of hot-spot initiation (Tcr), thermal sensitivity probability density function [S(T)] vs. temperature (T) relation curves for NHTPN with radius of 1 m surrounded with ambient of 340 K, the peak temperature corresponding to the maximum value of S(T) vs. T relation curve (TS(T)max), safety degree (SD) and critical ambient temperature (Tacr) of thermal explosion of NHTPN were calculated respectively, by means of the onset temperature (Te) and maximum peak temperature (Tp) from the non-isothermal DSC curves of NHTPN at different heating rates (β), the apparent activation energy (EK and EO) and pre-exponential constant (AK) of thermal decomposition reaction obtained by Kissinger's method and Ozawa's method, Cp, density (ρ) and thermal conductivity (λ), the decomposition heat (Qd, taking half-explosion heat), Zhang–Hu–Xie–Li's formula, Smith's equation, Friedman's formula, Bruckman–Guillet's formula, Frank-Kamenetskii formula and Wang–Du's formulas.