The liquid part of {HEAD ~ the reaction medium}, under {TAIL ~ the starting conditions} already specified, and within the preferred range of ratio of water to sodium hydroxide, consists of two phases 
under
The liquid part of { HEAD ~ the reaction medium } , under { TAIL ~ the starting conditions } already specified , and within the preferred range of ratio of water to sodium hydroxide , consists of two phases
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH