Based on the preceding report about DEAA synthesis, the solvent choice for synthesis reaction,distillation conditions and the main properties are further described. The molecular structure of DEAA was determined by means of infrared spectrum, ¹H NMR and other methods. The results identify that DEAA is a trimer with stable six-membered ring structure. The behavior of DEAA in distillation under different temperature and pressure agrees with the results of its structure analysis.It can be concluded that DEAA is a compound with acceptable thermal stability,which could be used as a self-ignitable pyrophoric agent and a promising precursor used to prepare superhard material alumimum nitride(AN).