Stability of Trinitroglycerin in Polyethylene Glycol 400

In this study, the stability of trinitroglycerin (tng) in polyethylene (peg) 400was investigated according to arrhenius approach. the reaction rate constant (k) forthe thermal disintegration of tng in peg 400 at various temperatures was countedbased on the percents of remaining tng at different intervals of time at a specifictemperature. the results showed that “k” at 40, 50, 60, 70, 80 and 90 ؛c were 6.5x10- 4,3.57x1 0- 3, 4.7x1 0- 3, 3x1 0- 2, 6.2x10- 2 and 6.5x1 0- 2, respectively. by plotting “log k”against temperature (1/t), “k” was obtained at 5 and 20 oc which was 1.47x10- 5 and7.94x10-5, respectively. the results showed the time required to attend 90, 80, 70,and 50 percent of the original tng at 5 oc was 9.76, 20.7, 33, and 64.2 months,respectively. the results assist in the calculation of the expiration time of tng/ peg400.