The invention relates generally to burn rate modifiers, plasticizers and propellants comprising a burn rate modifier and/or a plasticizer. The invention also relates to methods of producing a propellant comprising a burn rate modifier and/or a plasticizer as well as an ammunition cartridge comprising the propellant. The burn rate modifier and/or plasticiser comprises a compound of formula (1) (Formula (1)) and the propellant comprises a compound of formula 1 and an energetic material. ##STR00001##