ðeɪ bɪkˌeɪm ˈɑːbsəlˌiːt æz ɐ pɹəpˈɛlənt dˈuː tə ðɪ ˌɪntɹədˈʌkʃən ʌv nˈaɪtɹoʊɛksplˈoʊsɪv pɹəpˈɛlənts sˈʌtʃ ɐz pˈaʊdɚ bˈiː, ɪn fɹˈæns, ænd lˈeɪɾɚ baɪ noʊbˈɛlz bɐlˈɪstaɪt ænd, ɪn bɹˈɪtən, baɪ kˈɔːɹdaɪt.
They became obsolete as a propellant due to the introduction of nitro-explosive propellants such as Poudre B, in France, and later by Nobel's ballistite and, in Britain, by cordite.