“…16 Magnesium powder and aluminium powder were solved in dilute hydrochloric acid and the content of magnesium and aluminium was determined by EDTA complexometric titration of ltrate with xylenol orange and eriochrome black T as indicators, respectively. 17, 18 The results show that the amounts of boron, magnesium and aluminium in the propellant are 25.015%, 6.986% and 3.853%, respectively.…”