Paraformaldehyde can also be used if sufficient water is added to the reaction to maintain {HEAD ~ all or a substantial portion} of the curative in {TAIL ~ solution} 
in
Paraformaldehyde can also be used if sufficient water is added to the reaction to maintain { HEAD ~ all or a substantial portion } of the curative in { TAIL ~ solution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL