Thermal analysis of sodium azide

The thermal reaction and decomposition of sodium azide were affected by the gas species, its pressure, sample type (powdered or tablet), par- ticle size, sample weight, surface heterogeneity, additives, aging, etc. In actual experiments, very complicated problems arose because those effects were combined together. In addition, it was determined that heat and mass transfer effects must also be considered when evaluating the thermal reactivity of sodium azide and its mixture. In this report, the thermal decomposition of sodium azide was mainly studied by thermal analysis, and the factors which affect its thermal properties were discussed.