Prior to reaction, the reaction mixure is given {TAIL ~ an effective amount} of {HEAD ~ a non ionic detergent}, and agitated 
Prior to reaction , the reaction mixure is given { TAIL ~ an effective amount } of { HEAD ~ a non ionic detergent } , and agitated
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH