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