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