Diglyercol tetranitrate is an energetic nitrate ester plasticizer having no freezing point, making the nitrate ester plasticizer especially suited for use in solid rocket motor propellants that are subjected to low temperature storage and operational environments, which can reach as low as −54° C. in temperature. In order to avoid problems associated with fume-off that characterize the conventional synthesis method of making diglycerol tetranitrate, synthesis is performed in a medium including a mixed acid phase and an inert organic phase. The mixed acid phase contains, as ingredients, at least one nitronium ion source and at least one acid having sufficient strength to generate nitronium ions from the nitronium ion source. The nitronium ions in the mixed acid nitrate diglycerol to form diglycerol tetranitrate, which is then received into the organic liquid. The organic liquid, which preferably is a chlorocarbon such as dichloromethane, is insoluble with diglycerol but soluble with diglycerol tetranitrate. The inert organic phase is then treated to neutralize any acid contained in the inert organic phase, and the diglycerol tetranitrate is separated from the inert organic phase.
Diglyercol tetranitrate是一种具有高能量的
硝酸酯
增塑剂,没有冰点,特别适用于在低温存储和操作环境下使用的固体火箭发动机推进剂,其温度可达-54°C。为了避免常规合成方法中与烟雾有关的问题,制备diglycerol tetranitrate时在包含混合酸相和惰性有机相的介质中进行。混合酸相包含至少一种亚硝基离子源和至少一种具有足够强度从亚硝基离子源中生成亚硝基离子的酸。混合酸中的亚硝基离子与
硝酸甘油反应形成diglycerol tetranitrate,然后被溶解在有机液体中。有机液体最好是
氯代烃,如
二氯甲烷,它与diglycerol不溶,但与diglycerol tetranitrate溶解。然后处理惰性有机相以中和其中所含的任何酸,并将diglycerol tetranitrate从惰性有机相中分离出来。