PURIFICATION METHOD OF HIGH PURITY HNIW(HEXANITROHEXAAZAISOWURTZITANE) BY RE-CRYSTALLIZATION

摘要

PURPOSE: Provided is a purification method of high purity HNIW(hexanitrohexaazaisowurtzitane) used as an oxidant of solid propellants for various rockets, by re-crystallization, thereby eliminating impurities and moisture effectively to allow easy the phase transfer of HNIW and to control the particle sizes easily. CONSTITUTION: The purification method of HNIW characteristically comprises the step of recrystallization by using di(C1-3 alkyl) carbonate, preferably dimethyl carbonate, as a recrystallization solvent. Therefore, HNIW compounds having a purity of 99% are obtained.