48 g or 82 22 mmole h 2 o along with 1 167 g 6 41 mmole 2 4 dinitrotoluene to simulate 15 99 g of nitration medium obtained from the dinitration of toluene no and n 2 were passed through this mixture at 26 sccm and 50 sccm respectively total reaction time was 98 minutes with 114 33 mmole of no being passed a dry ice carbon tetrachloride trap maintained at 23 u00b0 c was used to condense the material driven from the nitration medium the reaction generated as in example 1 copious amounts of brown fumes in the head space above the reaction liquid which were identified as no 2 the material trapped overhead weighed 11 37 g which represents 71 1 of the starting material on a weight basis to make sure that the light flow of n 2 used during the reaction was not entraining water or nitric acid was following was done the trap was raised to room temperature and n 2 at 1 sccm was passed through the trap after a period of venting condensed gases which vaporized at the low elevated temperature 0 648 g of liquid was left this liquid was assumed to be any entrained water or nitric acid this represents 4.