Polyvinyl chloride (PVC)
is produced by polycondensation reaction.
uses either emulsion or suspension polymerisation methods.
can be made thermosetting by adding a plasticiser.
softening temperature is 200°C.
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Phosphoric acid is produced in wet process from phosphate rock and
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium