The amount of the stabilizer depletes with time; remaining content of less than 0.5% (with initial 2% content) requires increased surveillance of the munition, with less than 0.2% warranting immediate disposal, as the depletion of the stabilizer may lead to autoignition of the propellant.
The stabilizer content diminishes over time; if it falls below 0.5% (from an initial 2%), increased surveillance of the munition is necessary, and if less than 0.2%, immediate disposal should be carried out to prevent autoignition due to stabilizer depletion.