Synthesis of Ammonium Dinitramide by Nitration of Potassium and Ammonium Sulfamate. the Effect of Sulfamate Conterion on ADN Purity

Nitration ofpotassium sulphamate was carried out using a mixture ofsulphuric and nitric acid at -30°c. the reaction time was optimized at the mole ratio ofsulphuric to nitric acid of (1:3.5). the difference in product yield by changing the potassium to ammonium sulphamate wasstudied throughly. it was found that both the yield and purity of the product is better starting with potassium sulphamate.