120 u00b0 c 3 5 g of anhydrous fecl 3 is added into the cstr via the fecl 3 loading port which initiates the 4 hours of batching of the material in the cstr twenty minutes before the end of 4 hour batching the pipe reactor is heated up to 80 u00b0 c by 30 steam and ready for continuous operation after 4 hours the material in the cstr is well batched the continuous operation begins by initiating feeds to the pipe reactor at flow rates of about 60 g hr and about 12 std l hr for 1240za and cl 2 starting 240db transfer from the pipe reactor to the cstr at a rate that maintains the liquid level in the pipe reactor stable and pumping off the crude 1230xa from the cstr at a rate of about 74 g hr during the operation the temperature in the pipe reactor is maintained at 80 u00b1 5 u00b0 c and the temperature in the cstr is maintained at 120 u00b1 2 u00b0 c the crude 1230xa product off the cstr is filtered for future purification 1 7 2 2 g of anhydrous fecl 3 is added into the cstr every two hours to maintain the concentration of fecl 3 in the range of 1 0 1 2 wt in the cstr for the examples described herein the liquid transferred from the pipe reactor into the cstr usually contains the following components 1240za 0 0 5 wt 1230xa 1 0 2.