1.Phthalic anhydride yana daya daga cikin mafi mahimmancin kayan aikin sinadarai masu mahimmanci, manyan abubuwan da suka samo asali shine dibutyl phthalate, dioctyl ester da diisobutyl ester, kuma ana iya amfani dashi azaman filastik don PVC, da dai sauransu.
2.It kuma za a iya amfani da a samar da unsaturated polyester guduro, alkyd guduro, dyes da pigments, da dama fenti, abinci Additives, da dai sauransu.