The other phase consists of hexamethylene diamine containing water and {HEAD ~ small amounts} of {TAIL ~ sodium} hydroxide 
of
The other phase consists of hexamethylene diamine containing water and { HEAD ~ small amounts } of { TAIL ~ sodium } hydroxide
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH