Phthalic sehydride o le okeni o le okeni ma le formula c6h4 (co) 2o. O le le mautonu o Phthalic Acid. O lenei lanu le mautonu o se taua alamanuia vailaau, aemaise mo le tele-fua gaosiga o palasitika

.Phthalic anhydride is an important chemical intermediate in the plastics industry from which are derived numerous phthalate esters that function as plasticizers in synthetic resins. Phthalic ayhydride lava ia o se monomer mo toega o loʻo tumau e pei o glynptal, o le alkyd reslins, ma le polyester resins.
O le Phthalic Athydride o loʻo faʻaaogaina foi o se muaulu o Anthraquinne, Phthleani, Rthheamine, Phthayyani, Freeherciy, ma Xerhrescenin, ma Xerhressiin.
O le Phthalic Athydride o loʻo faʻaaogaina i le tumutumu o Amine Amine, o le faʻatoʻaga fusuʻaga a Farani, ma le faʻaoso. O isi tali ma le Phthalic ayhydride Reweydriphhlein, Benzoic Acad, PhthalySullelfathialfillage (o le Amtistthethal