Alternatively, the phosphate ester may be prepared by {HEAD ~ a reaction} of the ethoxylated alcohol with {TAIL ~ phosphoric anhydride} to form a di ester/mono ester mixture 
with
Alternatively , the phosphate ester may be prepared by { HEAD ~ a reaction } of the ethoxylated alcohol with { TAIL ~ phosphoric anhydride } to form a di ester / mono ester mixture
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH