抄録
Tetraammonium tetraimidocyclotetraphosphatete tetrahydrate has been prepared by adding aqueous ammonia and ethanol into an aqueous tetraimidocyclotetraphosphoric acid solution. Only the release of the water of crystallization was observed and any decomposition of the imidophosphate did not occur up to 140°C. At a higher temperature, the imidophosphate decomposed to produce many kinds of condensed phosphates with or without NH and NH2 groups.