Ammonium nitrate;  thermal stability;  Decomposition

The mechanism and influencing factors of thermal decomposition of ammonium nitrate between 100~150 °C were studied, and the effects of substances and stabilizers that activated the system were quantitatively analyzed. The results show that moisture, nitric acid, sulfuric acid and phosphoric acid can reduce the thermal stability of the system, and its mass content of 0.5% can shorten the induction period of ammonium nitrate by more than 50%. The addition of 3% zinc oxide and aluminum hydroxide can effectively inhibit the decomposition reaction; For calcium carbonate and potassium chloride, the decomposition reaction is no longer carried out only when the mass content reaches 15%; Urea is a good ammonium nitrate stabilizer, which can inhibit the decomposition reaction at 130 °C at 1% content.