DETERMINATION OF THE HEAT OF THE REACTION OF 2,4,6-TRINITROTOLUENE AND 2,4-DINITROTOLUENE WITH SULFURIC AND NITROSYLSULFURIC ACIDS

The heats of the reaction (Q(r) of 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) with sulfuric acid and of TNT with nitrosylsulfuric acid were measured at temperatures above 200-degrees-C. The heat of the reaction of TNT with H2SO4 (824 kJ/mole) is higher than for the mixture based on DNT (649 kJ/mole). The introduction of NOHSO4 into a solution of TNT in sulfuric acid increases Q(r) by 50% (1219 kJ/mole). An analysis of the gas phase showed that the main reaction products are oxides of carbon, sulfur dioxide, and nitrogen. The stoichiometric equations were compiled, and the heats of the reactions were calculated by two methods. The results of the calculation were compared with the values Of Q(r) obtained by direct measurement.