The reaction product is crystallized by heating the slurry in the drownout tank under reflux at {HEAD ~ a temperature} of about 93° C. while stirring for at least about 6 hours, and up to {TAIL ~ about 16 hours} 
The reaction product is crystallized by heating the slurry in the drownout tank under reflux at { HEAD ~ a temperature } of about 93 ° C. while stirring for at least about 6 hours , and up to { TAIL ~ about 16 hours }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL