1.Phthalic anhydride ndi imodzi mwazinthu zofunika kwambiri zopangira mankhwala, zotengera zake zazikulu ndi dibutyl phthalate, dioctyl ester ndi diisobutyl ester, ndipo zingagwiritsidwe ntchito ngati plasticizer ya PVC, etc.
2.Itha kugwiritsidwanso ntchito popanga unsaturated polyester resin, alkyd resin, utoto ndi utoto, mitundu yosiyanasiyana ya utoto, zowonjezera zakudya, ndi zina zambiri.
