Study of thermal dehydration of sodium orthophosphate monosubstituted

摘要: Depending on the conditions of conducting synthesis, it is possible to obtain polymeric phosphates different composition and structure. The mixtures polyphosphates, employed in production technological lubricants, are expedient synthesize by high-temperature dehydration sodium orthophosphate monosubstituted. temperature ranges, over which thermochemical transformations monosubstituted with formation polyphosphates proceed, established thermogravimetric method. determined using X-ray phase analysis. Quantitative applying original method eluent ion-exchange chromatography. It that basic products thermal range temperatures 200–650 °C Na 3 Р О 9 , 2 H P O 7 6 18 . Thermochemical NaH PO 4 into at 650 °C accompanied side reactions 10 We proposed chemical scheme Kinetics isothermal process obtaining from examined. quantitative inorganic depending duration dehydration. possibility a salt mixture assigned qualitative demonstrated. use mixture: 76 % 8 % 10, obtained 650 °C, as phosphate component lubricants for hot rolling pipes.