N-acetyl-3,3-dinitroazetidine (ADNAZ) is an important precursor for synthesizing new multinitroazetidine energetic compounds. Its thermal behaviour was studied under a non-isothermal condition by DSC and TG/DTG methods, the results show that there are one melting process and one endothermic decomposition process. The specific molar heat capacity (C-p,C-m) of ADNAZ was determined by a continuous C-p mode of micro-calorimeter and theoretical calculation, and the C-p,C-m of ADNAZ was 240.37 J . K-1 . mol(-1) at T = 298.15 K. The detonation velocity (D) and detonation pressure (P) of ADNAZ were estimated using the nitrogen equivalent equation according to the experimental density, the value of D and P are (6685.83 +/- 3.12) m . s(-1) and (18.36 +/- 0.02) GPa, respectively. The free radical signals of ADNAZ were detected by electron spin resonance (ESR) technique, which is used to estimate its sensitivity. (C) 2015 Elsevier Ltd. All rights reserved.