Deterrent Coatings and Stabilizers
Deterrent coatings can help to slow the rate of energy release when needed. A propellant loaded in a low-velocity cartridge will carry minimal deterrent; a higher-velocity cartridge requires more deterrent to maintain firing pressure longer. A common strategy is to blend deterred and undeterred granules in the same propellant. This slows energy release through staged burning; the undeterred granules burn first.
Stabilizers are preservatives used to increase storage life. Common stabilizers are found in the diphenylamine family.