Phthalic anhydride is an industrially important chemical. It can be prepared from
o-xylene or naphthalene.
[1] It is widely used for the industrial preparation of plasticizers for PVC (polyvinyl chloride).
[2]Phthalic anhydride can be synthesized via oxidation of
o-xylene, in the presence of V
2O
5/TiO
2 monolithic catalyst supported by aluminium honeycomb.
[3]