PA

Phthalic Anhydride PA is widely used as phthalate plasticizer, unsaturated polyester resin, dye intermediate. PA manufacturing method is divided into ortho-xylene based process and naphthalene based process by used raw mathrials and fixed and fluidized bed type by used catalyst. Chemical formula : C8H4O3 Chemical name : Benzene-1,2-dicarboxylix anhydride 1,3-Phthalandione Cas : Isobenzofuran-1,3-dione CAS Number : 85-44-9 Molecular weight : 148.11 g/mol Appearance : white flake or transparent melt Raw material for phthalate plasticizer (DOP, DINP, DIDP, DBP, etc) Raw material of resin, including polyester, unsaturated polyester resin and alkyd resin. Dye intermediate, including phthalimide, phthalic nitrite, anthranilic acid, benzoic acid Ester Polyol Other usage includes Telephthalic acid, medicines and aromatic essence ITEM UNIT VALUE(Molten) VALUE(Flakes) TEST METHOD Molten Color APHA MAX 15 MAX 20 ASTM D 3366 Heat Stability APHA MAX 40 MAX 40 ASTM D 3366 Purity WT% MIN 99.85 MIN 99.85 G/C Solidfication Point º C MIN 130.9 MIN 130.9 ASTM D 1493 Net wt. 25kg paper bag/p.p woven bag